What are some effective input validation techniques in Django?

What are some effective input validation techniques in Django?

In Django, you can use model field validations, forms, and custom validators to ensure data integrity. Would you like to know more about any specific technique?

Can you explain how to use model field validations?

Sure! Model field validations in Django are done by specifying parameters like max_length, blank, and null in your model fields. This ensures that the data adheres to certain rules before being saved.

What about using forms for validation?

Django forms provide a way to handle user input and validate it. You can define fields and their validation rules in a form class, and Django will automatically handle the validation when the form is submitted.

How can I create a custom validator?

To create a custom validator, define a function that raises a ValidationError if the input doesn't meet your criteria. Then, you can use this function in your model or form field definitions.