URLField is a CharField, for a URL. It is generally used for storing webpage links or particularly called as URLs. It is validated by URLValidator. To store larger text TextField is used. The default form widget for this field is TextInput.
field_name = models.URLField(max_length=200, **options)
URLField has one extra optional argument:
The maximum length (in characters) of the field. The
max_length is enforced at the database level and in Django’s validation using MaxLengthValidator. If not specified, a default of 200 is used.
Django Model URLField Explanation
Illustration of URLField using an Example. Consider a project named
geeksforgeeks having an app named
Refer to the following articles to check how to create a project and an app in Django.
Enter the following code into
models.py file of geeks app.
Add the geeks app to
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
Python manage.py migrate
geeks_field URLField is created when you run migrations on the project. It is a field to store URLs validated by URLValidator.
How to use URLField ?
URLField is used for storing URLs in the database. One can store any kind of URL, either internal or external link. URLField should be given an argument
max_length for specifying the maximum length of string it is required to store. In the production server, after the Django application is deployed, space is very limited. So it is always optimal to use max_length according to the requirement of the field. Let us create an instance of the URLField we created and check if it is working.
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 URLField will enable it to store empty values for that table in relational database.
Here are the field options and attributes that an URLField 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 (e.g., 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.|
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