How can I create custom validators in Django Form Extensions?

How can I create custom validators in Django Form Extensions?

You can create custom validators by defining a function that raises a ValidationError if the validation fails. Then, you can use this function in your form fields.

Can you show me an example of a custom validator?

Sure! Here's a simple example:

from django.core.exceptions import ValidationError

def validate_even(value):
    if value % 2 != 0:
        raise ValidationError('The number must be even.')

You can then use validate_even in your form field like this:

class MyForm(forms.Form):
    number = forms.IntegerField(validators=[validate_even])

What if I want to validate against multiple conditions?

You can combine multiple validators by adding them to the validators list. Each validator will be called in order.

Is there a way to create reusable validators?

Yes! You can define your validators in a separate module and import them wherever needed, making them reusable across different forms.