field_name = models.UUIDField ( ** options )
Django UUIDField Model Explained
Illustration of a UUIDField using an 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
makemigrations from the terminal,
Python manage.py makemigrations
geeks directory b A new folder named migrations will be created with a file named
geeks_field geeks_field is generated when you run makemigrations for the project. This is a field to store an instance of a UUID in python.
How to use a UUIDField?
UUID, a universally unique identifier, is a python library that helps generate random 128-bit objects as identifiers. To learn more about UUIDs, visit
# model import
# from geek app
# import uuid
# UUID object
# GeeksMo del
GeeksModel.objects. create (geeks_field
geek_object .save ()
Now let’s check it out on the admin server. We have created a GeeksModel instance
Field parameters — 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 UUIDField will allow it to store empty values for that table in a relational database.
Here are the options and attributes that UUIDField can use.
|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.|