How can I implement custom validation in Django forms?

How can I implement custom validation in Django forms?

You can create custom validation by defining a method in your form class. Use the clean_<fieldname>() method for field-specific validation.

Can you give me an example of a custom validator?

Sure! For instance, if you have a field called 'age', you can create a method like def clean_age(self): and raise a ValidationError if the age is not valid.

What if I want to validate multiple fields together?

You can override the clean() method in your form class. This method allows you to access multiple fields and perform validation on them together.

Is there a way to reuse validators across different forms?

Yes, you can create a custom validator function and use it in multiple forms by referencing it in the field's validators argument.