A Slug is basically a short label for something, containing only letters, numbers, underscores or hyphens. They’re generally used in URLs. For example, in a typical blog entry URL:
Here, the last data
add-the-slug-field-inside-django-model is the slug.
SlugField in Django is like a CharField, where you can specify
max_length attribute also. If max_length is not specified, Django will use a default length of 50. It also implies setting Field.db_index to True.It is often useful to automatically prepopulate a SlugField based on the value of some other value.It uses validate_slug or validate_unicode_slug for validation.
field_name = models.SlugField(max_length=200, **options)
SlugField has following optional arguments:
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 True, the field accepts Unicode letters in addition to ASCII letters. Defaults to False.
Django Model SlugField Explanation
Illustration of SlugField 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 SlugField is created when you run migrations on the project.
How to use SlugField ?
SlugField is used for storing basically storing URL paths after a particular URL. To know more about how to properly add a SlugField to Django Project, refer this article – Add the slug field inside Django Model
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 SlugField will enable it to store empty values for that table in relational database.
Here are the field options and attributes that an SlugField 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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