How can I validate form fields in Django?

How can I validate form fields in Django?

In Django, you can validate form fields by using the built-in validators or by creating custom validation methods in your forms.

Can you give me an example of a custom validator?

Sure! You can create a custom validator by defining a function that raises a ValidationError if the input is invalid. Then, you can use this function in your form field.

What are some built-in validators I can use?

Django provides several built-in validators like MaxLengthValidator, MinValueValidator, and EmailValidator that you can use directly in your forms.

How do I display error messages for invalid fields?

You can display error messages in your templates by checking if the form is not valid and iterating through the form's errors.