Repository: Learnathon-By-Geeky-Solutions/pipinstallc
Pull request #58: fixed sonar cloud issues
Author: login: reshadMajumder
Created: 2025-04-29T16:19:06Z | Merged: 2025-04-29T16:21:15Z



Diff:
diff --git a/core/api/serializers.py b/core/api/serializers.py
index 638eb96..22777b8 100644
--- a/core/api/serializers.py
+++ b/core/api/serializers.py
@@ -5,22 +5,13 @@
 from django.db import models
 from enrollments.models import Enrollment
 
+
 # Define constants for repeated string literals
 NAME_WHITESPACE_ERROR = "Name cannot be empty or just whitespace"
 
 """
 Serializer for custom User model.
 """
-class UserSerializer(serializers.ModelSerializer):
-    '''
-    Serializer for custom User model.
-    user can view their profile and update their profile
-    user must be authenticated to view their profile
-    user can view a single user by id
-    '''
-    class Meta:
-        model = CustomUser
-        fields = ['id', 'username', 'email', 'profile_picture', 'is_email_verified', 'phone_number', 'is_profile_verified', 'date_of_birth', 'university', 'department', 'major_subject']
 
 class UniversitySerializer(serializers.ModelSerializer):
     class Meta:
@@ -52,6 +43,46 @@ def validate_name(self, value):
             raise serializers.ValidationError(NAME_WHITESPACE_ERROR)
         return value
     
+    
+class UserSerializer(serializers.ModelSerializer):
+
+    '''
+    Serializer for custom User model.
+    user can view their profile and update their profile
+    user must be authenticated to view their profile
+    user can view a single user by id
+    '''
+    university = UniversitySerializer(read_only=True)
+    department = DepartmentSerializer(read_only=True)
+    major_subject = MajorSubjectSerializer(read_only=True)
+    
+    # Fields that should be read-only and not modifiable by users
+    is_email_verified = serializers.BooleanField(read_only=True)
+    is_profile_verified = serializers.BooleanField(read_only=True)
+    
+    # Write-only fields for updating with just IDs
+    university_id = serializers.UUIDField(write_only=True, required=False)
+    department_id = serializers.UUIDField(write_only=True, required=False)
+    major_subject_id = serializers.UUIDField(write_only=True, required=False)
+
+    class Meta:
+        model = CustomUser
+        fields = ['id', 'username', 'email', 'profile_picture', 'is_email_verified', 'phone_number', 'is_profile_verified', 'date_of_birth', 'university', 'department', 'major_subject', 'university_id', 'department_id', 'major_subject_id']
+    
+    def update(self, instance, validated_data):
+        # Handle the ID fields and remove them from validated_data
+        if 'university_id' in validated_data:
+            instance.university_id = validated_data.pop('university_id')
+        if 'department_id' in validated_data:
+            instance.department_id = validated_data.pop('department_id')
+        if 'major_subject_id' in validated_data:
+            instance.major_subject_id = validated_data.pop('major_subject_id')
+        
+        # Update the instance with remaining fields
+        return super().update(instance, validated_data)
+
+
+
 class ContributionVideoSerializer(serializers.ModelSerializer):
     """
     Serializer for contribution videos
diff --git a/core/api/urls.py b/core/api/urls.py
index c5383fb..4d25294 100644
--- a/core/api/urls.py
+++ b/core/api/urls.py
@@ -1,12 +1,11 @@
 from django.urls import path
 from .views import (
-    ProfileView, UserInfoView, UserContributionView, 
+    UserInfoView, UserContributionView, 
     ContributionCommentView, AllContributionView,
     ContributionRatingView, UniversityView, DepartmentView, MajorSubjectView
 )
 
 urlpatterns = [
-    path('profile/', ProfileView.as_view(), name='profile'),
     path('user-info/', UserInfoView.as_view(), name='add-user-info'),
     # contribution urls for registered user to view their contributions
     path('user-contributions/', UserContributionView.as_view(), name='contributions'),
diff --git a/core/api/views.py b/core/api/views.py
index 5de04b6..6f10164 100644
--- a/core/api/views.py
+++ b/core/api/views.py
@@ -20,6 +20,7 @@
 # Define constants for repeated string literals
 INVALID_DATA_MSG = 'Invalid data'
 NOT_FOUND_MSG = 'Not found'
+CONTRIBUTIONS_LIST_PATTERN = 'contributions_list:*'
 
 
 class OptimizedPagination(LimitOffsetPagination):
@@ -27,23 +28,29 @@ class OptimizedPagination(LimitOffsetPagination):
     max_limit = 100
 
 
-class ProfileView(APIView):
-    """
-    Get user profile data.
-    """
-    permission_classes = [IsAuthenticated]
-    def get(self, request):
-        user = request.user
-        serializer = UserSerializer(user)   
+# Helper methods to reduce code duplication
+def create_success_response(message, data=None, status_code=status.HTTP_200_OK):
+    """Create a standardized success response"""
+    response_data = {
+        'status': True,
+        'message': message
+    }
+    if data is not None:
+        response_data['data'] = data
+    return Response(response_data, status=status_code)
+
+def create_error_response(message, errors=None, status_code=status.HTTP_400_BAD_REQUEST):
+    """Create a standardized error response"""
+    response_data = {
+        'status': False,
+        'message': message
+    }
+    if errors is not None:
+        response_data['errors'] = errors
+    return Response(response_data, status=status_code)
+
+
 
-        return Response(
-            {
-                'status': True,
-                'message': 'User profile fetched successfully',
-                'data': serializer.data
-            },
-            status=status.HTTP_200_OK
-        )
 
 
 class UserInfoView(APIView):
@@ -53,28 +60,35 @@ class UserInfoView(APIView):
     permission_classes = [IsAuthenticated]
     def put(self, request):
         user = request.user
-        serializer = UserSerializer(user, data=request.data, partial=True)
+        data = request.data.copy()
+        
+        # Map the incoming IDs to the appropriate serializer fields
+        if 'university' in data and data['university']:
+            data['university_id'] = data.pop('university')
+        
+        if 'department' in data and data['department']:
+            data['department_id'] = data.pop('department')
+        
+        if 'major_subject' in data and data['major_subject']:
+            data['major_subject_id'] = data.pop('major_subject')
+            
+        serializer = UserSerializer(user, data=data, partial=True)
         if serializer.is_valid():
             serializer.save()
-            return Response(
-                {
-                    'status': True,
-                    'message': 'User info updated successfully',
-                    'data':serializer.data
-                }, status=status.HTTP_200_OK)
-        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+            return create_success_response(
+                'User info updated successfully',
+                serializer.data
+            )
+        return create_error_response(INVALID_DATA_MSG, serializer.errors)
     
     def get(self, request):
         user = request.user
         serializer = UserSerializer(user)
-        return Response(
-            {
-                'status': True,
-                'message': 'User info fetched successfully',    
-                'data': serializer.data
-            },
-            status=status.HTTP_200_OK
+        return create_success_response(
+            'User info fetched successfully',
+            serializer.data
         )
+
 class UniversityView(APIView):
     """
     API View for handling University operations
@@ -86,57 +100,34 @@ def get(self, request, pk=None):
             if pk:
                 university = University.objects.get(id=pk)
                 serializer = UniversitySerializer(university)
-                return Response({
-                    'status': True,
-                    'message': 'University fetched successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_200_OK)
+                return create_success_response('University fetched successfully', serializer.data)
             
             universities = University.objects.all()
             serializer = UniversitySerializer(universities, many=True)
-            return Response({
-                'status': True,
-                'message': 'Universities fetched successfully',
-                'data': serializer.data
-            }, status=status.HTTP_200_OK)
+            return create_success_response('Universities fetched successfully', serializer.data)
             
         except ObjectDoesNotExist:
-            return Response({
-                'status': False,
-                'message': 'University not found'
-            }, status=status.HTTP_404_NOT_FOUND)
+            return create_error_response('University not found', status_code=status.HTTP_404_NOT_FOUND)
         except Exception:
-            return Response({
-                'status': False,
-                'message': 'An error occurred while processing your request'
-            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+            return create_error_response('An error occurred while processing your request', status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
     def post(self, request):
         try:
             serializer = UniversitySerializer(data=request.data)
             if serializer.is_valid():
                 serializer.save()
-                return Response({
-                    'status': True,
-                    'message': 'University created successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_201_CREATED)
+                return create_success_response(
+                    'University created successfully', 
+                    serializer.data, 
+                    status_code=status.HTTP_201_CREATED
+                )
             
-            return Response({
-                'status': False,
-                'message': INVALID_DATA_MSG,
-                'errors': serializer.errors
-            }, status=status.HTTP_400_BAD_REQUEST)
+            return create_error_response(INVALID_DATA_MSG, serializer.errors)
             
         except IntegrityError:
-            return Response({
-                'status': False,
-                'message': 'University with this name already exists'
-            }, status=status.HTTP_400_BAD_REQUEST)
-        except Exception :
-            return Response({
-                'status': False,
-            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+            return create_error_response('University with this name already exists')
+        except Exception:
+            return create_error_response('An error occurred while processing your request', status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
 
 class DepartmentView(APIView):
@@ -150,56 +141,34 @@ def get(self, request, pk=None):
             if pk:
                 department = Department.objects.get(id=pk)
                 serializer = DepartmentSerializer(department)
-                return Response({
-                    'status': True,
-                    'message': 'Department fetched successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_200_OK)
+                return create_success_response('Department fetched successfully', serializer.data)
             
             departments = Department.objects.all()
             serializer = DepartmentSerializer(departments, many=True)
-            return Response({
-                'status': True,
-                'message': 'Departments fetched successfully',
-                'data': serializer.data
-            }, status=status.HTTP_200_OK)
+            return create_success_response('Departments fetched successfully', serializer.data)
             
         except ObjectDoesNotExist:
-            return Response({
-                'status': False,
-                'message': 'Department not found'
-            }, status=status.HTTP_404_NOT_FOUND)
+            return create_error_response('Department not found', status_code=status.HTTP_404_NOT_FOUND)
         except Exception:
-            return Response({
-                'status': False,
-            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+            return create_error_response('An error occurred while processing your request', status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
     def post(self, request):
         try:
             serializer = DepartmentSerializer(data=request.data)
             if serializer.is_valid():
                 serializer.save()
-                return Response({
-                    'status': True,
-                    'message': 'Department created successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_201_CREATED)
+                return create_success_response(
+                    'Department created successfully', 
+                    serializer.data, 
+                    status_code=status.HTTP_201_CREATED
+                )
             
-            return Response({
-                'status': False,
-                'message': INVALID_DATA_MSG,
-                'errors': serializer.errors
-            }, status=status.HTTP_400_BAD_REQUEST)
+            return create_error_response(INVALID_DATA_MSG, serializer.errors)
             
         except IntegrityError:
-            return Response({
-                'status': False,
-                'message': 'Department with this name already exists'
-            }, status=status.HTTP_400_BAD_REQUEST)
+            return create_error_response('Department with this name already exists')
         except Exception:
-            return Response({
-                'status': False,
-            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+            return create_error_response('An error occurred while processing your request', status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
 
 class MajorSubjectView(APIView):
@@ -213,56 +182,34 @@ def get(self, request, pk=None):
             if pk:
                 major_subject = MajorSubject.objects.get(id=pk)
                 serializer = MajorSubjectSerializer(major_subject)
-                return Response({
-                    'status': True,
-                    'message': 'Major Subject fetched successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_200_OK)
+                return create_success_response('Major Subject fetched successfully', serializer.data)
             
             major_subjects = MajorSubject.objects.all()
             serializer = MajorSubjectSerializer(major_subjects, many=True)
-            return Response({
-                'status': True,
-                'message': 'Major Subjects fetched successfully',
-                'data': serializer.data
-            }, status=status.HTTP_200_OK)
+            return create_success_response('Major Subjects fetched successfully', serializer.data)
             
         except ObjectDoesNotExist:
-            return Response({
-                'status': False,
-                'message': 'Major Subject not found'
-            }, status=status.HTTP_404_NOT_FOUND)
+            return create_error_response('Major Subject not found', status_code=status.HTTP_404_NOT_FOUND)
         except Exception:
-            return Response({
-                'status': False,
-            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+            return create_error_response('An error occurred while processing your request', status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
     def post(self, request):
         try:
             serializer = MajorSubjectSerializer(data=request.data)
             if serializer.is_valid():
                 serializer.save()
-                return Response({
-                    'status': True,
-                    'message': 'Major Subject created successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_201_CREATED)
+                return create_success_response(
+                    'Major Subject created successfully', 
+                    serializer.data, 
+                    status_code=status.HTTP_201_CREATED
+                )
             
-            return Response({
-                'status': False,
-                'message': INVALID_DATA_MSG,
-                'errors': serializer.errors
-            }, status=status.HTTP_400_BAD_REQUEST)
+            return create_error_response(INVALID_DATA_MSG, serializer.errors)
             
         except IntegrityError:
-            return Response({
-                'status': False,
-                'message': 'Major Subject with this name already exists'
-            }, status=status.HTTP_400_BAD_REQUEST)
+            return create_error_response('Major Subject with this name already exists')
         except Exception:
-            return Response({
-                'status': False,
-            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+            return create_error_response('An error occurred while processing your request', status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
 
 
@@ -276,9 +223,9 @@ def get(self, request, pk=None):
             try:
                 contribution = Contributions.objects.get(id=pk, user=user)
                 serializer = ContributionSerializer(contribution)
-                return Response({'status': True, 'message': 'Success', 'data': serializer.data}, status=status.HTTP_200_OK)
+                return create_success_response('Success', serializer.data)
             except Contributions.DoesNotExist:
-                return Response({'status': False, 'message': NOT_FOUND_MSG}, status=status.HTTP_404_NOT_FOUND)
+                return create_error_response(NOT_FOUND_MSG, status_code=status.HTTP_404_NOT_FOUND)
         
         # Get filter parameter for major subject
         major_subject_id = request.query_params.get('major_subject')
@@ -291,10 +238,7 @@ def get(self, request, pk=None):
             try:
                 contributions = contributions.filter(related_Major_Subject_id=major_subject_id)
             except Exception:
-                return Response({
-                    'status': False,
-                    'message': 'Invalid major subject ID'
-                }, status=status.HTTP_400_BAD_REQUEST)
+                return create_error_response('Invalid major subject ID')
         
         # Order by newest first
         contributions = contributions.order_by('-created_at')
@@ -336,25 +280,17 @@ def post(self, request):
         serializer = ContributionSerializer(data=parsed_data)
         
         if serializer.is_valid():
-            contribution = serializer.save(user=request.user)
+            serializer.save(user=request.user)
             
             # Invalidate cache for list views
-            cache.delete_pattern("contributions_list:*") if hasattr(cache, 'delete_pattern') else cache.clear()
+            cache.delete_pattern(CONTRIBUTIONS_LIST_PATTERN) if hasattr(cache, 'delete_pattern') else cache.clear()
             
-            return Response({
-                'status': True, 
-                'message': 'Created', 
-                'data': serializer.data
-            }, status=status.HTTP_201_CREATED)
+            return create_success_response('Created', serializer.data, status_code=status.HTTP_201_CREATED)
         
         # Log validation errors for debugging
         logger.error(f"Validation errors: {serializer.errors}")
         
-        return Response({
-            'status': False, 
-            'message': INVALID_DATA_MSG, 
-            'errors': serializer.errors
-        }, status=status.HTTP_400_BAD_REQUEST)
+        return create_error_response(INVALID_DATA_MSG, serializer.errors)
 
     def _prepare_post_data(self, request):
         """Helper method to prepare contribution data from request for post"""
@@ -374,8 +310,14 @@ def _prepare_post_data(self, request):
         
         # Process tags, videos and notes
         parsed_data.update(self._process_tags(request))
+        parsed_data.update(self._process_post_videos(request))
+        parsed_data.update(self._process_notes(request))
+        
+        return parsed_data
         
-        # Handle videos specifically for post
+    def _process_post_videos(self, request):
+        """Process videos specifically for post method"""
+        result = {}
         videos = []
         video_titles = {}
         video_files = {}
@@ -403,18 +345,33 @@ def _prepare_post_data(self, request):
                 videos.append(video)
         
         if videos:
-            parsed_data['videos'] = videos
-        
-        # Handle notes
+            result['videos'] = videos
+            
+        return result
+
+    def _process_tags(self, request):
+        """Extract tags from request data"""
+        result = {}
+        tags = []
+        for key in request.data:
+            if key.startswith('tags[') and key.endswith('][name]'):
+                tags.append({'name': request.data[key]})
+        if tags:
+            result['tags'] = tags
+        return result
+    
+    def _process_notes(self, request):
+        """Extract notes from request data"""
+        result = {}
         notes = []
         for key in request.FILES:
             if 'note_file' in key:
                 notes.append({'note_file': request.FILES[key]})
         
         if notes:
-            parsed_data['notes'] = notes
-            
-        return parsed_data
+            result['notes'] = notes
+        
+        return result
 
     def put(self, request, pk):
         import logging
@@ -423,7 +380,7 @@ def put(self, request, pk):
         try:
             contribution = Contributions.objects.get(id=pk, user=request.user)
         except Contributions.DoesNotExist:
-            return Response({'status': False, 'message': NOT_FOUND_MSG}, status=status.HTTP_404_NOT_FOUND)
+            return create_error_response(NOT_FOUND_MSG, status_code=status.HTTP_404_NOT_FOUND)
         
         # Extract contribution data processing to reduce complexity
         parsed_data = self._prepare_contribution_data(request, contribution)
@@ -435,27 +392,32 @@ def put(self, request, pk):
                 
                 # Invalidate cache for this contribution and list views
                 cache.delete(f"contribution_detail:{pk}")
-                cache.delete_pattern("contributions_list:*") if hasattr(cache, 'delete_pattern') else cache.clear()
+                cache.delete_pattern(CONTRIBUTIONS_LIST_PATTERN) if hasattr(cache, 'delete_pattern') else cache.clear()
                 
-                return Response({
-                    'status': True, 
-                    'message': 'Updated', 
-                    'data': ContributionSerializer(updated_contribution).data
-                }, status=status.HTTP_200_OK)
+                return create_success_response(
+                    'Updated', 
+                    ContributionSerializer(updated_contribution).data
+                )
             except Exception:
                 logger.error("Error updating contribution")
-                return Response({
-                    'status': False,
-                    'message': 'Error updating contribution',
-                }, status=status.HTTP_400_BAD_REQUEST)
+                return create_error_response('Error updating contribution')
         
         logger.error(f"Validation errors: {serializer.errors}")
-        return Response({
-            'status': False, 
-            'message': INVALID_DATA_MSG, 
-            'errors': serializer.errors
-        }, status=status.HTTP_400_BAD_REQUEST)
-        
+        return create_error_response(INVALID_DATA_MSG, serializer.errors)
+
+    def delete(self, request, pk):
+        try:
+            contribution = Contributions.objects.get(id=pk, user=request.user)
+            contribution.delete()
+            
+            # Invalidate cache for this contribution and list views
+            cache.delete(f"contribution_detail:{pk}")
+            cache.delete_pattern(CONTRIBUTIONS_LIST_PATTERN) if hasattr(cache, 'delete_pattern') else cache.clear()
+            
+            return create_success_response('Deleted')
+        except Contributions.DoesNotExist:
+            return create_error_response(NOT_FOUND_MSG, status_code=status.HTTP_404_NOT_FOUND)
+
     def _prepare_contribution_data(self, request, contribution):
         """Helper method to prepare contribution data from request"""
         # Create a properly structured data dictionary
@@ -483,17 +445,6 @@ def _prepare_contribution_data(self, request, contribution):
         
         return parsed_data
     
-    def _process_tags(self, request):
-        """Extract tags from request data"""
-        result = {}
-        tags = []
-        for key in request.data:
-            if key.startswith('tags[') and key.endswith('][name]'):
-                tags.append({'name': request.data[key]})
-        if tags:
-            result['tags'] = tags
-        return result
-    
     def _process_videos(self, request):
         """Extract videos from request data"""
         result = {}
@@ -541,19 +492,6 @@ def _process_notes(self, request):
         
         return result
 
-    def delete(self, request, pk):
-        try:
-            contribution = Contributions.objects.get(id=pk, user=request.user)
-            contribution.delete()
-            
-            # Invalidate cache for this contribution and list views
-            cache.delete(f"contribution_detail:{pk}")
-            cache.delete_pattern("contributions_list:*") if hasattr(cache, 'delete_pattern') else cache.clear()
-            
-            return Response({'status': True, 'message': 'Deleted'}, status=status.HTTP_200_OK)
-        except Contributions.DoesNotExist:
-            return Response({'status': False, 'message': NOT_FOUND_MSG}, status=status.HTTP_404_NOT_FOUND)
-
 class AllContributionView(APIView):
     """
     Get all contributions with optional filtering and optimized pagination
@@ -597,46 +535,48 @@ def get_cached_key(self, params):
     def get(self, request, pk=None):
         # For individual contribution detail view
         if pk:
-            # For individual contribution, use a different cache key
-            cache_key = f"contribution_detail:{pk}"
-            cached_response = cache.get(cache_key)
-            if cached_response:
-                return Response(cached_response)
-                
-            try:
-                # Only select the related fields we actually need
-                contribution = Contributions.objects.select_related(
-                    'related_University',
-                    'related_Department',
-                    'related_Major_Subject',
-                    'user'
-                ).prefetch_related(
-                    'tags',
-                    Prefetch('videos', queryset=ContributionVideos.objects.only('id', 'title', 'video_file')),
-                    Prefetch('notes', queryset=ContributionNotes.objects.only('id', 'note_file')),
-                    
-                ).get(id=pk)
-                
-                serializer = AllContributionSerializer(contribution, context={'request': request})
-                response_data = {
-                    'status': True,
-                    'message': 'Contribution fetched successfully',
-                    'data': serializer.data
-                }
-                
-                # Cache individual contribution detail
-                cache_timeout = getattr(settings, 'CACHE_TIMEOUTS', {}).get('contribution_detail', 600)
-                cache.set(cache_key, response_data, timeout=cache_timeout)
-                
-                return Response(response_data, status=status.HTTP_200_OK)
-            except Contributions.DoesNotExist:
-                return Response({
-                    'status': False,
-                    'message': 'Contribution not found'
-                }, status=status.HTTP_404_NOT_FOUND)
+            return self._get_contribution_detail(request, pk)
 
-        # For listing view with milions of records
+        # For listing view with millions of records
+        return self._get_contribution_list(request)
         
+    def _get_contribution_detail(self, request, pk):
+        # For individual contribution, use a different cache key
+        cache_key = f"contribution_detail:{pk}"
+        cached_response = cache.get(cache_key)
+        if cached_response:
+            return Response(cached_response)
+            
+        try:
+            # Only select the related fields we actually need
+            contribution = Contributions.objects.select_related(
+                'related_University',
+                'related_Department',
+                'related_Major_Subject',
+                'user'
+            ).prefetch_related(
+                'tags',
+                Prefetch('videos', queryset=ContributionVideos.objects.only('id', 'title', 'video_file')),
+                Prefetch('notes', queryset=ContributionNotes.objects.only('id', 'note_file')),
+                
+            ).get(id=pk)
+            
+            serializer = AllContributionSerializer(contribution, context={'request': request})
+            response_data = {
+                'status': True,
+                'message': 'Contribution fetched successfully',
+                'data': serializer.data
+            }
+            
+            # Cache individual contribution detail
+            cache_timeout = getattr(settings, 'CACHE_TIMEOUTS', {}).get('contribution_detail', 600)
+            cache.set(cache_key, response_data, timeout=cache_timeout)
+            
+            return Response(response_data, status=status.HTTP_200_OK)
+        except Contributions.DoesNotExist:
+            return create_error_response('Contribution not found', status_code=status.HTTP_404_NOT_FOUND)
+            
+    def _get_contribution_list(self, request):
         # Build filter query params
         filter_params = {}
         university_id = request.query_params.get('university')
@@ -651,6 +591,51 @@ def get(self, request, pk=None):
         if cached_response:
             return Response(cached_response)
 
+        # Get filtered contributions queryset
+        contributions = self._get_filtered_contributions(
+            filter_params, 
+            university_id, 
+            department_id, 
+            major_subject_id, 
+            user_id, 
+            tag_name
+        )
+        
+        # Add ordering by created_at (newest first)
+        contributions = contributions.order_by('-created_at')
+        
+        # Get count efficiently without retrieving all objects
+        # For millions of records, we need to optimize count as well
+        try:
+            total_count = contributions.count()
+        except:
+            # Fallback if count() is too slow
+            total_count = None
+        
+        # Apply pagination - critical for millions of records
+        paginator = self.pagination_class()
+        paginated_qs = paginator.paginate_queryset(contributions, request)
+        
+        # Process paginated results
+        response_data = self._process_paginated_results(
+            paginated_qs, 
+            request, 
+            total_count, 
+            paginator, 
+            university_id, 
+            department_id, 
+            major_subject_id, 
+            user_id, 
+            tag_name
+        )
+
+        # Get cache timeout from settings or use default (5 minutes)
+        cache_timeout = getattr(settings, 'CACHE_TIMEOUTS', {}).get('contributions_list', 300)
+        cache.set(cache_key, response_data, timeout=cache_timeout)
+
+        return Response(response_data, status=status.HTTP_200_OK)
+        
+    def _get_filtered_contributions(self, filter_params, university_id, department_id, major_subject_id, user_id, tag_name):
         # Start with optimized queryset - only select needed fields to reduce memory usage
         # For large datasets, we want to be very specific about what we fetch
         contributions = Contributions.objects.only(
@@ -671,37 +656,25 @@ def get(self, request, pk=None):
             try:
                 filter_params['related_University_id'] = university_id
             except Exception:
-                return Response({
-                    'status': False,
-                    'message': 'Invalid university ID'
-                }, status=status.HTTP_400_BAD_REQUEST)
+                return create_error_response('Invalid university ID')
                 
         if department_id:
             try:
                 filter_params['related_Department_id'] = department_id
             except Exception:
-                return Response({
-                    'status': False,
-                    'message': 'Invalid department ID'
-                }, status=status.HTTP_400_BAD_REQUEST)
+                return create_error_response('Invalid department ID')
                 
         if major_subject_id:
             try:
                 filter_params['related_Major_Subject_id'] = major_subject_id
             except Exception:
-                return Response({
-                    'status': False,
-                    'message': 'Invalid major subject ID'
-                }, status=status.HTTP_400_BAD_REQUEST)
+                return create_error_response('Invalid major subject ID')
                 
         if user_id:
             try:
                 filter_params['user_id'] = user_id
             except Exception:
-                return Response({
-                    'status': False,
-                    'message': 'Invalid user ID'
-                }, status=status.HTTP_400_BAD_REQUEST)
+                return create_error_response('Invalid user ID')
         
         # Apply all filters at once for better performance
         if filter_params:
@@ -712,28 +685,13 @@ def get(self, request, pk=None):
             try:
                 contributions = contributions.filter(tags__name__icontains=tag_name).distinct()
             except Exception:
-                return Response({
-                    'status': False,
-                    'message': 'Invalid tag name'
-                }, status=status.HTTP_400_BAD_REQUEST)
-
-        # Add ordering by created_at (newest first)
-        contributions = contributions.order_by('-created_at')
-        
-        # Get count efficiently without retrieving all objects
-        # For milions of records, we need to optimize count as well
-        try:
-            total_count = contributions.count()
-        except:
-            # Fallback if count() is too slow
-            total_count = None
-        
-        # Apply pagination - critical for milions of records
-        paginator = self.pagination_class()
-        paginated_qs = paginator.paginate_queryset(contributions, request)
+                return create_error_response('Invalid tag name')
+                
+        return contributions
         
+    def _process_paginated_results(self, paginated_qs, request, total_count, paginator, university_id, department_id, major_subject_id, user_id, tag_name):
         # Only after pagination, load the related objects for the paginated subset
-        # This is key for handling milions of records - only load relations for the current page
+        # This is key for handling millions of records - only load relations for the current page
         ids_in_page = [item.id for item in paginated_qs]
         if ids_in_page:
             # Now get complete data only for the paginated items
@@ -754,7 +712,7 @@ def get(self, request, pk=None):
             serializer = AllContributionSerializer([], many=True, context={'request': request})
         
         # Build response with pagination details
-        response_data = {
+        return {
             'status': True,
             'message': 'Contributions fetched successfully',
             'filters_applied': {
@@ -774,12 +732,6 @@ def get(self, request, pk=None):
             'data': serializer.data
         }
 
-        # Get cache timeout from settings or use default (5 minutes)
-        cache_timeout = getattr(settings, 'CACHE_TIMEOUTS', {}).get('contributions_list', 300)
-        cache.set(cache_key, response_data, timeout=cache_timeout)
-
-        return Response(response_data, status=status.HTTP_200_OK)
-
 
 
 
@@ -806,12 +758,7 @@ def get(self, request, contribution_id=None):
         else:
             comments = ContributionsComments.objects.all()
             serializer = ContributionCommentSerializer(comments, many=True)
-        return Response(
-            {
-                'status': True,
-                'message': 'Comments fetched successfully',
-                'data': serializer.data
-            }, status=status.HTTP_200_OK)
+        return create_success_response('Comments fetched successfully', serializer.data)
 
     def post(self, request):
         """
@@ -820,18 +767,12 @@ def post(self, request):
         serializer = ContributionCommentSerializer(data=request.data)
         if serializer.is_valid():
             serializer.save()
-            return Response(
-                {
-                    'status': True,
-                    'message': 'Comment Posted successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_201_CREATED)
-        return Response(
-            {
-                'status': False,
-                'message': INVALID_DATA_MSG,
-                'errors': serializer.errors
-            }, status=status.HTTP_400_BAD_REQUEST)
+            return create_success_response(
+                'Comment Posted successfully',
+                serializer.data,
+                status_code=status.HTTP_201_CREATED
+            )
+        return create_error_response(INVALID_DATA_MSG, serializer.errors)
 
 
 
@@ -843,17 +784,12 @@ def delete(self, request, contribution_id, comment_id):
         comment = get_object_or_404(ContributionsComments, id=comment_id, contribution=contribution)
         if comment.user.id == request.user.id:
             comment.delete()
-            return Response(
-                {
-                    'status': True,
-                    'message': 'Comment deleted successfully',
-                }, status=status.HTTP_200_OK)
+            return create_success_response('Comment deleted successfully')
         else:
-            return Response(
-                {
-                    'status': False,
-                    'message': 'You do not have permission to delete this comment',
-                }, status=status.HTTP_403_FORBIDDEN)
+            return create_error_response(
+                'You do not have permission to delete this comment',
+                status_code=status.HTTP_403_FORBIDDEN
+            )
         
     def put(self, request, contribution_id, comment_id):
         """
@@ -865,18 +801,12 @@ def put(self, request, contribution_id, comment_id):
             serializer = ContributionCommentSerializer(comment, data=request.data)
             if serializer.is_valid():
                 serializer.save()
-                return Response(
-                    {
-                        'status': True,
-                        'message': 'Comment updated successfully',
-                        'data': serializer.data
-                    }, status=status.HTTP_200_OK)
+                return create_success_response('Comment updated successfully', serializer.data)
         else:
-            return Response(
-                {
-                    'status': False,
-                    'message': 'You do not have permission to update this comment',
-                }, status=status.HTTP_403_FORBIDDEN)
+            return create_error_response(
+                'You do not have permission to update this comment',
+                status_code=status.HTTP_403_FORBIDDEN
+            )
         
 class ContributionRatingView(APIView):
     """
@@ -905,30 +835,22 @@ def get(self, request, contribution_id):
             
             if rating:
                 serializer = ContributionRatingSerializer(rating)
-                return Response({
-                    'status': True,
-                    'message': 'User rating fetched successfully',
-                    'data': serializer.data
-                }, status=status.HTTP_200_OK)
+                return create_success_response('User rating fetched successfully', serializer.data)
             else:
-                return Response({
-                    'status': False,
-                    'message': 'You have not rated this contribution yet'
-                }, status=status.HTTP_404_NOT_FOUND)
+                return create_error_response(
+                    'You have not rated this contribution yet',
+                    status_code=status.HTTP_404_NOT_FOUND
+                )
         else:
             # Get all ratings for the contribution
             ratings = ContributionRatings.objects.filter(contribution=contribution)
             serializer = ContributionRatingSerializer(ratings, many=True)
             
-            return Response({
-                'status': True,
-                'message': 'Ratings fetched successfully',
-                'data': {
-                    'average_rating': contribution.rating,
-                    'total_ratings': ratings.count(),
-                    'ratings': serializer.data
-                }
-            }, status=status.HTTP_200_OK)
+            return create_success_response('Ratings fetched successfully', {
+                'average_rating': contribution.rating,
+                'total_ratings': ratings.count(),
+                'ratings': serializer.data
+            })
     
     def post(self, request, contribution_id):
         """
@@ -944,10 +866,10 @@ def post(self, request, contribution_id):
         ).exists()
         
         if not is_enrolled:
-            return Response({
-                'status': False,
-                'message': 'You must be enrolled in this contribution to rate it'
-            }, status=status.HTTP_403_FORBIDDEN)
+            return create_error_response(
+                'You must be enrolled in this contribution to rate it',
+                status_code=status.HTTP_403_FORBIDDEN
+            )
         
         # Add user and contribution to request data
         data = request.data.copy()
@@ -959,15 +881,15 @@ def post(self, request, contribution_id):
         try:
             rating_value = float(rating_value)
             if rating_value < 0 or rating_value > 5:
-                return Response({
-                    'status': False,
-                    'message': 'Rating must be between 0 and 5'
-                }, status=status.HTTP_400_BAD_REQUEST)
+                return create_error_response(
+                    'Rating must be between 0 and 5',
+                    status_code=status.HTTP_400_BAD_REQUEST
+                )
         except (TypeError, ValueError):
-            return Response({
-                'status': False,
-                'message': 'Rating must be a number between 0 and 5'
-            }, status=status.HTTP_400_BAD_REQUEST)
+            return create_error_response(
+                'Rating must be a number between 0 and 5',
+                status_code=status.HTTP_400_BAD_REQUEST
+            )
         
         serializer = ContributionRatingSerializer(data=data)
         if serializer.is_valid():
@@ -975,18 +897,12 @@ def post(self, request, contribution_id):
             
             # The signal handler will update the contribution's rating automatically
             
-            return Response({
-                'status': True,
-                'message': 'Rating submitted successfully',
-                'data': {
-                    'rating': serializer.data,
-                }
-            }, status=status.HTTP_201_CREATED)
-        
-        return Response({
-            'status': False,
-            'message': INVALID_DATA_MSG,
-            'errors': serializer.errors
-        }, status=status.HTTP_400_BAD_REQUEST)
+            return create_success_response(
+                'Rating submitted successfully',
+                {'rating': serializer.data},
+                status_code=status.HTTP_201_CREATED
+            )
+        
+        return create_error_response(INVALID_DATA_MSG, serializer.errors)
 
 
diff --git a/core/core/settings.py b/core/core/settings.py
index a456246..2ff3be8 100644
--- a/core/core/settings.py
+++ b/core/core/settings.py
@@ -147,10 +147,7 @@
 
 CORS_ALLOW_ALL_ORIGINS = True  # Change to False in production
 
-# CORS_ALLOWED_ORIGINS = [
-#     'http://localhost:3000',
-#     'http://127.0.0.1:3000',
-# ]
+
 
 CORS_ALLOW_CREDENTIALS = True
 


Reviews:
user: login: coderabbitai[bot]
body: **Actionable comments posted: 3**

<details>
<summary>🔭 Outside diff range comments (1)</summary><blockquote>

<details>
<summary>core/api/views.py (1)</summary><blockquote>

`638-672`: _⚠️ Potential issue_

**Beep boop: `_get_filtered_contributions` can return `Response`, breaks call-chain**  
Inside each `try/except` you `return create_error_response(...)`. `_get_contribution_list` expects a queryset and immediately calls `.order_by()` on the result. If an invalid filter is supplied this blows up with `'Response' object has no attribute 'order_by'`.

Minimal fix:

```diff
-            return create_error_response('Invalid university ID')
+            raise ValueError('Invalid university ID')
...
-    def _get_contribution_list(self, request):
+    def _get_contribution_list(self, request):
         ...
-        try:
-            total_count = contributions.count()
-        except:
-            total_count = None
+        try:
+            total_count = contributions.count()
+        except Exception:
+            total_count = None
+    except ValueError as exc:
+        return create_error_response(str(exc))
```

or simply let the filter silently ignore invalid IDs to keep the return type consistent.

<details>
<summary>🧰 Tools</summary>

<details>
<summary>🪛 Ruff (0.8.2)</summary>

638-638: `_get_filtered_contributions` is too complex (12 > 10)

(C901)

---

638-638: Missing return type annotation for private function `_get_filtered_contributions`

(ANN202)

---

638-638: Missing type annotation for function argument `filter_params`

(ANN001)

---

638-638: Missing type annotation for function argument `university_id`

(ANN001)

---

638-638: Missing type annotation for function argument `department_id`

(ANN001)

---

638-638: Missing type annotation for function argument `major_subject_id`

(ANN001)

---

638-638: Missing type annotation for function argument `user_id`

(ANN001)

---

638-638: Missing type annotation for function argument `tag_name`

(ANN001)

---

651-651: Trailing comma missing

Add trailing comma

(COM812)

---

658-658: Do not catch blind exception: `Exception`

(BLE001)

---

664-664: Do not catch blind exception: `Exception`

(BLE001)

---

670-670: Do not catch blind exception: `Exception`

(BLE001)

</details>

</details>

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: ASSERTIVE**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 2b74acb6057820fab7327adef826e63fe12fc76c and 4958684fb1dd1456984c6f4751d2a068d10960c0.

</details>

<details>
<summary>📒 Files selected for processing (4)</summary>

* `core/api/serializers.py` (2 hunks)
* `core/api/urls.py` (1 hunks)
* `core/api/views.py` (24 hunks)
* `core/core/settings.py` (1 hunks)

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧬 Code Graph Analysis (1)</summary>

<details>
<summary>core/api/serializers.py (1)</summary><blockquote>

<details>
<summary>core/auth_app/models.py (2)</summary>

* `Meta` (30-37)
* `CustomUser` (6-37)

</details>

</blockquote></details>

</details><details>
<summary>🪛 Ruff (0.8.2)</summary>

<details>
<summary>core/api/serializers.py</summary>

70-70: Mutable class attributes should be annotated with `typing.ClassVar`

(RUF012)

---

72-72: Missing return type annotation for public function `update`

(ANN201)

---

72-72: Missing type annotation for function argument `instance`

(ANN001)

---

72-72: Missing type annotation for function argument `validated_data`

(ANN001)

</details>
<details>
<summary>core/api/views.py</summary>

32-32: Missing return type annotation for public function `create_success_response`

(ANN201)

---

32-32: Missing type annotation for function argument `message`

(ANN001)

---

32-32: Missing type annotation for function argument `data`

(ANN001)

---

32-32: Missing type annotation for function argument `status_code`

(ANN001)

---

36-36: Trailing comma missing

Add trailing comma

(COM812)

---

42-42: Missing return type annotation for public function `create_error_response`

(ANN201)

---

42-42: Missing type annotation for function argument `message`

(ANN001)

---

42-42: Missing type annotation for function argument `errors`

(ANN001)

---

42-42: Missing type annotation for function argument `status_code`

(ANN001)

---

46-46: Trailing comma missing

Add trailing comma

(COM812)

---

66-66: Unnecessary key check before dictionary access

Replace with `dict.get`

(RUF019)

---

69-69: Unnecessary key check before dictionary access

Replace with `dict.get`

(RUF019)

---

72-72: Unnecessary key check before dictionary access

Replace with `dict.get`

(RUF019)

---

80-80: Trailing comma missing

Add trailing comma

(COM812)

---

84-84: Missing return type annotation for public function `get`

(ANN201)

---

84-84: Missing type annotation for function argument `request`

(ANN001)

---

89-89: Trailing comma missing

Add trailing comma

(COM812)

---

111-111: Do not catch blind exception: `Exception`

(BLE001)

---

114-114: Missing return type annotation for public function `post`

(ANN201)

---

114-114: Missing type annotation for function argument `request`

(ANN001)

---

122-122: Trailing comma missing

Add trailing comma

(COM812)

---

129-129: Do not catch blind exception: `Exception`

(BLE001)

---

152-152: Do not catch blind exception: `Exception`

(BLE001)

---

155-155: Missing return type annotation for public function `post`

(ANN201)

---

155-155: Missing type annotation for function argument `request`

(ANN001)

---

163-163: Trailing comma missing

Add trailing comma

(COM812)

---

170-170: Do not catch blind exception: `Exception`

(BLE001)

---

193-193: Do not catch blind exception: `Exception`

(BLE001)

---

196-196: Missing return type annotation for public function `post`

(ANN201)

---

196-196: Missing type annotation for function argument `request`

(ANN001)

---

204-204: Trailing comma missing

Add trailing comma

(COM812)

---

211-211: Do not catch blind exception: `Exception`

(BLE001)

---

291-291: Logging statement uses f-string

(G004)

---

318-318: Missing return type annotation for private function `_process_post_videos`

(ANN202)

---

318-318: Missing type annotation for function argument `request`

(ANN001)

---

352-352: Missing return type annotation for private function `_process_tags`

(ANN202)

---

352-352: Missing type annotation for function argument `request`

(ANN001)

---

363-363: Missing return type annotation for private function `_process_notes`

(ANN202)

---

363-363: Missing type annotation for function argument `request`

(ANN001)

---

399-399: Trailing comma missing

Add trailing comma

(COM812)

---

401-401: Do not catch blind exception: `Exception`

(BLE001)

---

402-402: Use `logging.exception` instead of `logging.error`

Replace with `exception`

(TRY400)

---

405-405: Logging statement uses f-string

(G004)

---

408-408: Missing return type annotation for public function `delete`

(ANN201)

---

408-408: Missing type annotation for function argument `request`

(ANN001)

---

408-408: Missing type annotation for function argument `pk`

(ANN001)

---

543-543: Missing return type annotation for private function `_get_contribution_detail`

(ANN202)

---

543-543: Missing type annotation for function argument `request`

(ANN001)

---

543-543: Missing type annotation for function argument `pk`

(ANN001)

---

556-556: Trailing comma missing

Add trailing comma

(COM812)

---

568-568: Trailing comma missing

Add trailing comma

(COM812)

---

579-579: Missing return type annotation for private function `_get_contribution_list`

(ANN202)

---

579-579: Missing type annotation for function argument `request`

(ANN001)

---

601-601: Trailing comma missing

Add trailing comma

(COM812)

---

611-611: Do not use bare `except`

(E722)

---

629-629: Trailing comma missing

Add trailing comma

(COM812)

---

638-638: `_get_filtered_contributions` is too complex (12 > 10)

(C901)

---

638-638: Missing return type annotation for private function `_get_filtered_contributions`

(ANN202)

---

638-638: Missing type annotation for function argument `filter_params`

(ANN001)

---

638-638: Missing type annotation for function argument `university_id`

(ANN001)

---

638-638: Missing type annotation for function argument `department_id`

(ANN001)

---

638-638: Missing type annotation for function argument `major_subject_id`

(ANN001)

---

638-638: Missing type annotation for function argument `user_id`

(ANN001)

---

638-638: Missing type annotation for function argument `tag_name`

(ANN001)

---

664-664: Do not catch blind exception: `Exception`

(BLE001)

---

670-670: Do not catch blind exception: `Exception`

(BLE001)

---

676-676: Do not catch blind exception: `Exception`

(BLE001)

---

692-692: Missing return type annotation for private function `_process_paginated_results`

(ANN202)

---

692-692: Missing type annotation for function argument `paginated_qs`

(ANN001)

---

692-692: Missing type annotation for function argument `request`

(ANN001)

---

692-692: Missing type annotation for function argument `total_count`

(ANN001)

---

692-692: Missing type annotation for function argument `paginator`

(ANN001)

---

692-692: Missing type annotation for function argument `university_id`

(ANN001)

---

692-692: Missing type annotation for function argument `department_id`

(ANN001)

---

692-692: Missing type annotation for function argument `major_subject_id`

(ANN001)

---

692-692: Missing type annotation for function argument `user_id`

(ANN001)

---

692-692: Missing type annotation for function argument `tag_name`

(ANN001)

---

773-773: Trailing comma missing

Add trailing comma

(COM812)

---

788-788: Unnecessary `else` after `return` statement

Remove unnecessary `else`

(RET505)

---

791-791: Trailing comma missing

Add trailing comma

(COM812)

---

808-808: Trailing comma missing

Add trailing comma

(COM812)

---

839-839: Unnecessary `else` after `return` statement

Remove unnecessary `else`

(RET505)

---

842-842: Trailing comma missing

Add trailing comma

(COM812)

---

852-852: Trailing comma missing

Add trailing comma

(COM812)

---

871-871: Trailing comma missing

Add trailing comma

(COM812)

---

886-886: Trailing comma missing

Add trailing comma

(COM812)

---

891-891: Trailing comma missing

Add trailing comma

(COM812)

---

903-903: Trailing comma missing

Add trailing comma

(COM812)

</details>

</details>

</details>

<details>
<summary>🔇 Additional comments (2)</summary><blockquote>

<details>
<summary>core/core/settings.py (1)</summary>

`148-152`: **Beep boop: full CORS exposure detected — confirm production intent**  
`CORS_ALLOW_ALL_ORIGINS = True` combined with deletion of the explicit whitelist means every origin may call the API. Great for local hacking; risky for prod. Consider driving this off an env-var (`DJANGO_ENV`) or switching to `CORS_ALLOWED_ORIGINS` in production builds.  
  
Would you like assistance wiring an environment-driven toggle?

</details>
<details>
<summary>core/api/urls.py (1)</summary>

`3-6`: **Beep boop: cleanup looks good**  
Removal of the unused `ProfileView` import and URL is tidy and risk-free.

<details>
<summary>🧰 Tools</summary>

<details>
<summary>🪛 Ruff (0.8.2)</summary>

5-5: Trailing comma missing

Add trailing comma

(COM812)

</details>

</details>

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: NONE
submitted_at: 2025-04-29T16:24:58Z

Review comments:
diff_hunk: @@ -52,6 +43,46 @@ def validate_name(self, value):
             raise serializers.ValidationError(NAME_WHITESPACE_ERROR)
         return value
     
+    
+class UserSerializer(serializers.ModelSerializer):
+
+    '''
+    Serializer for custom User model.
+    user can view their profile and update their profile
+    user must be authenticated to view their profile
+    user can view a single user by id
+    '''
+    university = UniversitySerializer(read_only=True)
+    department = DepartmentSerializer(read_only=True)
+    major_subject = MajorSubjectSerializer(read_only=True)
+    
+    # Fields that should be read-only and not modifiable by users
+    is_email_verified = serializers.BooleanField(read_only=True)
+    is_profile_verified = serializers.BooleanField(read_only=True)
+    
+    # Write-only fields for updating with just IDs
+    university_id = serializers.UUIDField(write_only=True, required=False)
+    department_id = serializers.UUIDField(write_only=True, required=False)
+    major_subject_id = serializers.UUIDField(write_only=True, required=False)
+
path: core/api/serializers.py
user: login: coderabbitai[bot]
body: _🧹 Nitpick (assertive)_

_⚠️ Potential issue_

**Beep boop: possible PK/field-type mismatch and missing FK validation**  
`UUIDField` is declared for `university_id`, `department_id`, `major_subject_id`, yet the related models look like classic auto-increment integers (see `CustomUser.university_id` FK). Passing an int into a UUIDField → validation error; passing a UUID into an int FK → 500 at DB layer.

Suggestion:  
1. Replace these with `serializers.PrimaryKeyRelatedField(queryset=University.objects.all(), write_only=True, source='university')` (similar for department & major_subject).  
2. This automatically validates existence and type.



Need a ready-to-paste diff?

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In core/api/serializers.py around lines 60 to 67, the fields university_id, department_id, and major_subject_id are declared as UUIDFields but the related models use integer primary keys, causing validation errors or DB issues. Replace these UUIDFields with serializers.PrimaryKeyRelatedField, setting the queryset to the corresponding model (e.g., University.objects.all()) and write_only=True, also set source to the related field name (e.g., source='university'). This change ensures proper type validation and existence checks automatically.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T16:24:57Z
author_association: NONE
diff_hunk: @@ -52,6 +43,46 @@ def validate_name(self, value):
             raise serializers.ValidationError(NAME_WHITESPACE_ERROR)
         return value
     
+    
+class UserSerializer(serializers.ModelSerializer):
+
+    '''
+    Serializer for custom User model.
+    user can view their profile and update their profile
+    user must be authenticated to view their profile
+    user can view a single user by id
+    '''
+    university = UniversitySerializer(read_only=True)
+    department = DepartmentSerializer(read_only=True)
+    major_subject = MajorSubjectSerializer(read_only=True)
+    
+    # Fields that should be read-only and not modifiable by users
+    is_email_verified = serializers.BooleanField(read_only=True)
+    is_profile_verified = serializers.BooleanField(read_only=True)
+    
+    # Write-only fields for updating with just IDs
+    university_id = serializers.UUIDField(write_only=True, required=False)
+    department_id = serializers.UUIDField(write_only=True, required=False)
+    major_subject_id = serializers.UUIDField(write_only=True, required=False)
+
+    class Meta:
+        model = CustomUser
+        fields = ['id', 'username', 'email', 'profile_picture', 'is_email_verified', 'phone_number', 'is_profile_verified', 'date_of_birth', 'university', 'department', 'major_subject', 'university_id', 'department_id', 'major_subject_id']
+    
+    def update(self, instance, validated_data):
+        # Handle the ID fields and remove them from validated_data
+        if 'university_id' in validated_data:
+            instance.university_id = validated_data.pop('university_id')
+        if 'department_id' in validated_data:
+            instance.department_id = validated_data.pop('department_id')
+        if 'major_subject_id' in validated_data:
+            instance.major_subject_id = validated_data.pop('major_subject_id')
+        
+        # Update the instance with remaining fields
+        return super().update(instance, validated_data)
path: core/api/serializers.py
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Beep boop: `update` skips validation, may explode on bad IDs**  
Manually assigning `instance.university_id = …` before calling `super().update` bypasses serializer + DB integrity checks. Invalid IDs raise `IntegrityError` that is never surfaced cleanly.

Patch idea (abridged):

```diff
- if 'university_id' in validated_data:
-     instance.university_id = validated_data.pop('university_id')
+ university = validated_data.pop('university_id', None)
+ if university is not None:
+     get_object_or_404(University, pk=university)  # ensures existence
+     instance.university_id = university
```

Same for department & major_subject.  



<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    def update(self, instance, validated_data):
        # Handle the ID fields and remove them from validated_data
        university = validated_data.pop('university_id', None)
        if university is not None:
            get_object_or_404(University, pk=university)  # ensures existence
            instance.university_id = university
        if 'department_id' in validated_data:
            instance.department_id = validated_data.pop('department_id')
        if 'major_subject_id' in validated_data:
            instance.major_subject_id = validated_data.pop('major_subject_id')
        
        # Update the instance with remaining fields
        return super().update(instance, validated_data)
`````

</details>

<!-- suggestion_end -->

<details>
<summary>🧰 Tools</summary>

<details>
<summary>🪛 Ruff (0.8.2)</summary>

72-72: Missing return type annotation for public function `update`

(ANN201)

---

72-72: Missing type annotation for function argument `instance`

(ANN001)

---

72-72: Missing type annotation for function argument `validated_data`

(ANN001)

</details>

</details>

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In core/api/serializers.py around lines 72 to 82, the update method assigns foreign key IDs directly to the instance, bypassing serializer validation and risking unhandled IntegrityErrors. To fix this, remove the manual assignment of university_id, department_id, and major_subject_id before calling super().update. Instead, include these IDs in validated_data and let the superclass update method handle validation and assignment, ensuring proper error handling and data integrity.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T16:24:57Z
author_association: NONE
diff_hunk: @@ -20,30 +20,37 @@
 # Define constants for repeated string literals
 INVALID_DATA_MSG = 'Invalid data'
 NOT_FOUND_MSG = 'Not found'
+CONTRIBUTIONS_LIST_PATTERN = 'contributions_list:*'
 
 
 class OptimizedPagination(LimitOffsetPagination):
     default_limit = 10
     max_limit = 100
 
 
-class ProfileView(APIView):
-    """
-    Get user profile data.
-    """
-    permission_classes = [IsAuthenticated]
-    def get(self, request):
-        user = request.user
-        serializer = UserSerializer(user)   
+# Helper methods to reduce code duplication
+def create_success_response(message, data=None, status_code=status.HTTP_200_OK):
+    """Create a standardized success response"""
+    response_data = {
+        'status': True,
+        'message': message
+    }
+    if data is not None:
+        response_data['data'] = data
+    return Response(response_data, status=status_code)
+
path: core/api/views.py
user: login: coderabbitai[bot]
body: _🧹 Nitpick (assertive)_

**Beep boop: helper missing type hints & commas — small hygiene tweak**  
Add trailing commas and optional type hints to silence Ruff noise; no functional impact but keeps CI green.

<details>
<summary>🧰 Tools</summary>

<details>
<summary>🪛 Ruff (0.8.2)</summary>

32-32: Missing return type annotation for public function `create_success_response`

(ANN201)

---

32-32: Missing type annotation for function argument `message`

(ANN001)

---

32-32: Missing type annotation for function argument `data`

(ANN001)

---

32-32: Missing type annotation for function argument `status_code`

(ANN001)

---

36-36: Trailing comma missing

Add trailing comma

(COM812)

</details>

</details>

<details>
<summary>🤖 Prompt for AI Agents (early access)</summary>

```
In core/api/views.py around lines 31 to 41, the helper function create_success_response is missing type hints for its parameters and return type, and the dictionary literals lack trailing commas. Add appropriate type hints for message, data, and status_code parameters, specify the return type as Response, and add trailing commas in the dictionary definitions to comply with style guidelines and keep CI checks passing.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-04-29T16:24:58Z
author_association: NONE

PR comments:
user: login: coderabbitai[bot]
created_at: 2025-04-29T16:19:13Z
body: <!-- This is an auto-generated comment: summarize by coderabbit.ai -->
<!-- walkthrough_start -->

<details>
<summary>📝 Walkthrough</summary>

## Summary by CodeRabbit

- **New Features**
  - Added the ability for users to update related fields (university, department, major subject) by their IDs.
  - Enabled deletion of user contributions by ID.

- **Improvements**
  - Standardized API response formats for success and error cases across all endpoints.
  - Enhanced handling of large datasets with improved filtering, pagination, and caching in contribution listings.
  - Improved modularity and clarity in contribution data processing.

- **Bug Fixes**
  - Ensured accurate updates for user profile fields and related entities.

- **Removals**
  - Removed the user profile endpoint from the API.
## Walkthrough

This update introduces several refactorings and enhancements to the API layer. The `UserSerializer` is restructured to support both nested read-only and write-only UUID fields for related models, with an overridden update method for handling these relationships. API views are standardized with new helper functions for constructing consistent success and error responses. Contribution management is improved with modular helper methods, a new delete endpoint, and optimized pagination and filtering for large datasets. The `ProfileView` endpoint is removed from the API, and CORS settings are simplified by deleting redundant commented-out configuration.

## Changes

| File(s)                                      | Change Summary |
|----------------------------------------------|---------------|
| `core/api/serializers.py`                    | Refactored `UserSerializer`: added nested read-only fields (`university`, `department`, `major_subject`), write-only UUID fields for updates, explicit read-only booleans, and an overridden `update` method for handling related foreign keys by ID. |
| `core/api/urls.py`                           | Removed import and URL pattern for `ProfileView`. |
| `core/api/views.py`                          | Introduced `create_success_response` and `create_error_response` helpers for standardized responses. Refactored multiple views to use these helpers. Added delete method to `UserContributionView`. Modularized contribution data processing. Improved filtering, pagination, and response handling in `AllContributionView`. |
| `core/core/settings.py`                      | Removed commented-out `CORS_ALLOWED_ORIGINS`; retained `CORS_ALLOW_ALL_ORIGINS = True`. |

## Sequence Diagram(s)

```mermaid
sequenceDiagram
    participant Client
    participant APIView
    participant Serializer
    participant DB

    Client->>APIView: PUT /user/
    APIView->>APIView: Remap university/department/major_subject to *_id
    APIView->>Serializer: Pass data with *_id fields
    Serializer->>DB: Update user and related FKs by ID
    DB-->>Serializer: Save changes
    Serializer-->>APIView: Return updated user data (nested read-only)
    APIView-->>Client: create_success_response(data)
```

```mermaid
sequenceDiagram
    participant Client
    participant UserContributionView
    participant DB
    participant Cache

    Client->>UserContributionView: DELETE /contribution/{id}/
    UserContributionView->>DB: Delete contribution by ID
    UserContributionView->>Cache: Invalidate related cache keys
    UserContributionView-->>Client: create_success_response(message)
```

## Poem

> 010101, refactor delight,  
> Responses now uniform, shining bright.  
> User links by ID, nested fields in view,  
> Contributions managed, paginated anew.  
> Profile path retired, CORS settings trimmed,  
> API logic cleaner, efficiency brimmed.  
> Beep boop! This update is quite a sight!  


</details>

<!-- walkthrough_end -->
<!-- internal state start -->


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<details open="true">
<summary>✨ Finishing Touches</summary>

- [ ] <!-- {"checkboxId": "7962f53c-55bc-4827-bfbf-6a18da830691"} --> 📝 Generate Docstrings

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<details>
<summary>🪧 Tips</summary>

### Chat

There are 3 ways to chat with [CodeRabbit](https://coderabbit.ai?utm_source=oss&utm_medium=github&utm_campaign=Learnathon-By-Geeky-Solutions/pipinstallc&utm_content=58):

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Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

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- `@coderabbitai pause` to pause the reviews on a PR.
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- `@coderabbitai help` to get help.

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- Add `@coderabbitai ignore` anywhere in the PR description to prevent this PR from being reviewed.
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### CodeRabbit Configuration File (`.coderabbit.yaml`)

- You can programmatically configure CodeRabbit by adding a `.coderabbit.yaml` file to the root of your repository.
- Please see the [configuration documentation](https://docs.coderabbit.ai/guides/configure-coderabbit) for more information.
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</details>

<!-- tips_end -->
author_association: NONE
user: login: Warhammer4000
created_at: 2025-04-29T16:19:18Z
body: ![](https://res.cloudinary.com/snyk/image/upload/r-d/scm-platform/snyk-pull-requests/pr-banner-default.svg)

### :tada: **Snyk checks have passed. No issues have been found so far.**

:white_check_mark: **security/snyk** check is complete. No issues have been found. [(View Details)](https://app.snyk.io/org/warhammer4000/pr-checks/d46724b0-5026-4bc8-ab46-493bb894616f?refs=4958684fb1dd1456984c6f4751d2a068d10960c0&source=prChecksComment)



author_association: CONTRIBUTOR
user: login: sonarqubecloud[bot]
created_at: 2025-04-29T16:20:34Z
body: ## [![Quality Gate Failed](https://sonarsource.github.io/sonarcloud-github-static-resources/v2/checks/QualityGateBadge/qg-failed-20px.png 'Quality Gate Failed')](https://sonarcloud.io/dashboard?id=Learnathon-By-Geeky-Solutions_pipinstallc&pullRequest=58) **Quality Gate failed**  
Failed conditions  
![](https://sonarsource.github.io/sonarcloud-github-static-resources/v2/common/failed-16px.png '') [34.5% Coverage on New Code](https://sonarcloud.io/component_measures?id=Learnathon-By-Geeky-Solutions_pipinstallc&pullRequest=58&metric=new_coverage&view=list) (required ≥ 80%)  
  
[See analysis details on SonarQube Cloud](https://sonarcloud.io/dashboard?id=Learnathon-By-Geeky-Solutions_pipinstallc&pullRequest=58)


author_association: NONE