Add default to slug field in model django

In Django, you can set a default value for a model field, including a SlugField, by using the default parameter when defining the field in your model. Here’s how you can do it:

Let’s say you have a model called Article with a title field and you want to generate a slug from the title with a default value.

from django.db import models
from django.utils.text import slugify

class Article(models.Model):
    title = models.CharField(max_length=200)
    slug = models.SlugField(max_length=200, unique=True, blank=True, default='default-slug')

    def save(self, *args, **kwargs):
        if not self.slug:
            self.slug = slugify(self.title)
        super().save(*args, **kwargs)

    def __str__(self):
        return self.title

SlugField with default: default='default-slug': This sets a default value for the slug field if no value is provided.

Override save method: In the save method, we check if the slug field is empty (if not self.slug:). If it is, we generate a slug from the title using slugify.

blank=True: The blank=True argument allows the field to be optional in forms. This is useful because the save method will generate the slug if it’s not provided.

Notes

If you want to ensure that the slug is always unique, you can set unique=True on the SlugField.The default value could be a static string (as shown) or dynamically generated in some cases. However, be cautious with dynamic defaults to ensure the uniqueness of the slugs.

Tags