BooleanField - Django Models - GeeksforGeeks

24 Aug, 2021
BooleanField is a true/false field. It is like a bool field in C/C+++. The default form widget for this field is CheckboxInput, or NullBooleanSelect if null=True. The default value of BooleanField is None when Field.default isn’t defined. One can define the default value as true or false by setting the default attribute to true/false simultaneously. 
Syntax:
field_name = models.BooleanField(**options)
Illustration of BooleanField using an Example. Consider a project named geeksforgeeks having an app named geeks. 
Refer to the following articles to check how to create a project and an app in Django. 
How to Create a Basic Project using MVT in Django?
How to Create an App in Django ?
Enter the following code into models.py file of geeks app. 
Python3
from django.db import modelsfrom django.db.models import Model# Create your models here. class GeeksModel(Model):    geeks_field = models.BooleanField()
Add the geeks app to INSTALLED_APPS 
Python3
# Application definition INSTALLED_APPS = [    'django.contrib.admin',    'django.contrib.auth',    'django.contrib.contenttypes',    'django.contrib.sessions',    'django.contrib.messages',    'django.contrib.staticfiles',    'geeks',]
Now when we run makemigrations command from the terminal,
Python manage.py makemigrations
A new folder named migrations would be created in geeks directory with a file named 0001_initial.py 
Python3
# Generated by Django 2.2.5 on 2019-09-25 06:00 from django.db import migrations, models class Migration(migrations.Migration):     initial = True     dependencies = [    ]     operations = [        migrations.CreateModel(            name ='GeeksModel',            fields =[                ('id',                  models.AutoField(auto_created = True,                  primary_key = True,                  serialize = False,                  verbose_name ='ID'                )),                ('geeks_field', models.BooleanField()),            ],        ),    ]
Now run, 
Python manage.py migrate
Thus, an geeks_field BooleanField is created when you run migrations on the project. It is a field to store boolean value – True/False.
BooleanField is used for checking the particular condition, for example, to check if Email of a user is verified or not. One can use BooleanField to mark it True or False. We can also set it to False by using default=True.
Python3
# importing the model# from geeks appfrom geeks.models import GeeksModel # creating a instance of# GeeksModelgeek_object = GeeksModel.objects.create(geeks_field = True)geek_object.save()
Now let’s check it in admin server. We have created an instance of GeeksModel.  
Field Options are the arguments given to each field for applying some constraint or imparting a particular characteristic to a particular Field. For example, adding an argument null = True to BooleanField will enable it to store empty values for that table in a relational database. Here are the field options and attributes that a BooleanField can use.
NaveenArora
annianni
Django-models
Python Django
Python
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