Explain about @csrf_exempt decorator in django

• In Django, the `@csrf_exempt` decorator is used to exempt a view or function from the Cross-Site Request Forgery (CSRF) protection provided by Django's middleware. CSRF is a security measure that helps prevent malicious websites from performing actions on behalf of authenticated users.

• When CSRF protection is enabled in Django, every non-safe HTTP request (such as POST, PUT, DELETE) must include a CSRF token in the request headers or body. This token is generated by Django and associated with the user's session. The token is then verified by Django's middleware to ensure that the request originated from the same website.

• However, there might be cases where you want to disable CSRF protection for a specific view or function. For example, if you have an API endpoint that needs to be accessed by external services or if you have a form that is submitted from a different domain. In such cases, you can use the `@csrf_exempt` decorator to exempt that particular view or function from CSRF protection.

• To use the `@csrf_exempt` decorator, you need to import it from the Django module `django.views.decorators.csrf` and apply it as a decorator above the view or function you want to exempt. Here's an example:

    from django.views.decorators.csrf import csrf_exempt

    from django.http import HttpResponse

    @csrf_exempt

    def my_view(request):

        # Your view logic here

        return HttpResponse("Hello, world!")

• In the above example, the `my_view` function is exempted from CSRF protection. Any requests made to this view will not require a CSRF token.

• It's important to note that when you use `@csrf_exempt`, you are explicitly bypassing the CSRF protection, so you should only use it when you have a good reason and have taken appropriate measures to ensure the security of your application. CSRF protection is an important security feature, and disabling it without proper consideration can expose your application to potential vulnerabilities.