How do I use validators in Django?

How do I use validators in Django?

In Django, validators are used to enforce rules on model fields. You can use built-in validators or create custom ones.

Can you give me an example of a built-in validator?

Sure! A common built-in validator is MaxValueValidator, which ensures that a field's value does not exceed a specified maximum.

How would I implement that in a model?

You can implement it like this: from django.core.validators import MaxValueValidator and then use it in your model field like age = models.IntegerField(validators=[MaxValueValidator(100)]).

What if I want to create a custom validator?

You can create a custom validator by defining a function that raises a ValidationError if the value doesn't meet your criteria. Then, use it in your model field.