What are some advanced features of Flask forms?

What are some advanced features of Flask forms?

Flask-WTF provides several advanced features like CSRF protection, file uploads, and custom validators. Would you like to know more about any specific feature?

Can you explain CSRF protection in Flask forms?

CSRF protection helps prevent cross-site request forgery attacks by ensuring that form submissions are made by authenticated users. Flask-WTF automatically includes a CSRF token in forms.

How do I implement file uploads in Flask forms?

To implement file uploads, you can use the FileField in your form class and handle the file in your view function. Make sure to set the enctype attribute to multipart/form-data in your form.

What are custom validators and how can I create one?

Custom validators allow you to define your own validation logic. You can create a function that raises a ValidationError if the input doesn't meet your criteria and then use it in your form field.