Django :
* CSRF Middleware : Django includes a built-in CSRF middleware that's activated by default. This middleware:
* Generates a unique token : For each user session, a random, unpredictable token is generated and stored in the user's session.
* Adds token to forms : The {% csrf_token %} template tag is used within forms to add the token as a hidden input field.
* Verifies token on submission : When a form is submitted, the server-side validates that the token in the form matches the token stored in the user's session. If they match, the request is processed; otherwise, it's rejected.
Rails :
* protect_from_forgery : Rails has a built-in protect_from_forgery method that's enabled by default in every new Rails application. This method:
* Generates a unique token : A unique token is generated for each user session and stored in the session cookie.
* Adds token to forms : A hidden form field named authenticity_token is automatically added to all forms in Rails applications.
* Verifies token on submission : When a form is submitted, the server-side compares the token in the form with the token in the session cookie. If they match, the request is processed; otherwise, it's rejected.
Key Similarities :
* Token-based approach : Both frameworks utilize a token-based system to verify the authenticity of requests.
* Middleware/Built-in protection : CSRF protection is integrated into the core of both frameworks, making it easy to implement.
* Flexibility : Both frameworks offer options for customizing CSRF protection behavior, such as disabling it for specific actions or controllers.
By leveraging these built-in mechanisms, Django and Rails developers can easily implement robust CSRF protection in their web applications, significantly reducing the risk of malicious exploits.
