field_name = models.BigIntegerField ( ** options )
BigAutoField illustration using example. Consider a project named
pythonengineering that has an application named
Refer to the following articles to check how to create a project and an app in Django.
Enter the following code into the
models.py file of the geeks application.
Now when we run the
makemigrations command from the terminal
Python manage.py makemigrations
geeks directory c ode> a new folder named migrations will be created with a file named
geeks_field BigIntegerField is created when you run makemigrations for the project. This is a field that can store integers ranging from -9223372036854775808 to 9223372036854775807 .
If we create objects of this model from the admin server. we can see geeks_field where numbers can be stored.
Field options — they are arguments given to each field to apply some constraint or to convey a particular characteristic to a particular field. For example, adding the
null = True argument to the BigIntegerField will allow it to store empty values for that table in a relational database.
Here are the options and attributes BigIntegerfield can use.
|Field Options th>||Description|
|Null||If True , Django will store empty values as NULL in the database. Default is False.|
|Blank||If True , the field is allowed to be blank ... Default is False.|
|Choices||An iterable (eg, a list or tuple) of 2-tuples to use as choices for this field.|
|Default||The default value for the field. This can be a value or a callable object. If callable it will be called every time a new object is created.|
|help_text||Extra “help” text to be displayed with the form widget. It's useful for documentation even if your field isn't used on a form.|
|primary_key||If True, this field is the primary key for the model .|
|Unique||If True, this field must be unique throughout the table.|