How can I implement validation in Django Crispy Forms?

How can I implement validation in Django Crispy Forms?

You can implement validation in Django Crispy Forms by using Django's built-in form validation methods. You can define custom validation methods in your form class.

Can you show me an example of a custom validation method?

Sure! You can create a method like this in your form class:

from django import forms

class MyForm(forms.Form):
    my_field = forms.CharField()

    def clean_my_field(self):
        data = self.cleaned_data['my_field']
        if not data.isalnum():
            raise forms.ValidationError('This field must be alphanumeric.')
        return data

What if I want to add error messages for multiple fields?

You can add error messages for multiple fields by defining custom clean methods for each field or by using the clean() method to validate multiple fields together.

Can I use Crispy Forms to render these error messages?

Yes, Crispy Forms will automatically render error messages next to the fields when you use the {{ form|crispy }} template tag.