Django Model: Clean Methods vs Validators

What are the differences between clean methods and validators in Django models?

Clean methods are used to define custom validation logic for model fields, while validators are reusable functions that can be applied to fields.

Can you give me an example of how to use a clean method?

Sure! You can override the clean() method in your model to add custom validation. For example:

class MyModel(models.Model):
    name = models.CharField(max_length=100)

    def clean(self):
        if not self.name.isalpha():
            raise ValidationError('Name must only contain letters.')

When should I use validators instead of clean methods?

Use validators for simple, reusable checks that can be applied to multiple fields, while clean methods are better for complex, model-specific logic.

Are there any performance considerations when using these methods?

Yes, using too many complex clean methods can slow down form validation. It's best to keep them efficient and use validators for simpler checks.