Update app.py

app.py

@@ -311,38 +311,41 @@ def navigate(index_change):
 
 # Function to navigate to specific rows
 def navigate_to_row(index):
-    st.session_state.current_index = index - 1
-    # only works consistently if done before rerun
-    js = '''
-    <script>
-        var body = window.parent.document.querySelector(".main");
-        
-        body.scrollTop = 0;
-        window.scrollY = 0;
-    </script>
-    '''
-    st.components.v1.html(js, height=0)
-    # https://discuss.streamlit.io/t/click-twice-on-button-for-changing-state/45633/2
-
-    # disable text input enter to submit
-    # https://discuss.streamlit.io/t/text-input-how-to-disable-press-enter-to-apply/14457/6
-    components.html(
-        """
+    if 0 <= index - 1 < len(st.session_state.data):
+        st.session_state.current_index = index - 1
+        # only works consistently if done before rerun
+        js = '''
         <script>
-        const inputs = window.parent.document.querySelectorAll('input');
-        inputs.forEach(input => {
-            input.addEventListener('keydown', function(event) {
-                if (event.key === 'Enter') {
-                    event.preventDefault();
-                }
-            });
-        });
+            var body = window.parent.document.querySelector(".main");
+            
+            body.scrollTop = 0;
+            window.scrollY = 0;
         </script>
-        """,
-        height=0
-    )
-
-    st.rerun()
+        '''
+        st.components.v1.html(js, height=0)
+        # https://discuss.streamlit.io/t/click-twice-on-button-for-changing-state/45633/2
+    
+        # disable text input enter to submit
+        # https://discuss.streamlit.io/t/text-input-how-to-disable-press-enter-to-apply/14457/6
+        components.html(
+            """
+            <script>
+            const inputs = window.parent.document.querySelectorAll('input');
+            inputs.forEach(input => {
+                input.addEventListener('keydown', function(event) {
+                    if (event.key === 'Enter') {
+                        event.preventDefault();
+                    }
+                });
+            });
+            </script>
+            """,
+            height=0
+        )
+    
+        st.rerun()
+    else:
+        st.error("Index out of range.")
 
 
 def show_field(f: Field, index: int, data_collected):
@@ -569,14 +572,6 @@ elif st.session_state.current_index == -2:
             st.session_state.user_id = st.text_input('User ID', value=user_id_from_url)
             add_validated_submit([st.session_state.user_id], "Please enter a valid user ID")
 
-#elif st.session_state.current_index == -2:
-#    if st.session_state.get('user_id'):
-#        st.session_state.user_id = get_param_from_url("user_id")
-#        navigate(1)
-#    else:
-#        with st.form("data_form"):
-#            st.session_state.user_id = st.text_input('User ID', value=user_id_from_url)
-#            add_validated_submit([st.session_state.user_id], "Please enter a valid user ID")
 
 elif st.session_state.current_index == -1:
     add_annotation_guidelines()
@@ -603,10 +598,15 @@ if 0 <= st.session_state.current_index < len(st.session_state.data):
     st.write(f"Page {st.session_state.current_index + 1} out of {len(st.session_state.data)}")
 
 def navigate_to_index():
-    if st.session_state.go_to-1 in range(len(st.session_state.data)):
-        navigate_to_row(st.session_state.go_to)
-    else:
-        st.info(f"{st.session_state.go_to} not in range of data.")
+    try:
+        go_to_index = int(st.session_state.go_to)
+        # Check if the index is within the valid range
+        if 0 <= go_to_index < len(st.session_state.data):
+            navigate_to_row(go_to_index)
+        else:
+            st.info(f"{go_to_index} is not in the range of data.")
+    except ValueError:
+        st.error("The page number must be an integer.")
 
 with st.form(key="nav_form"):
     st.number_input("Go to Page: ", key="go_to")