it creates can be used as decorators as well as in with statements. with statement. This change is just syntactic sugar for any construct of the following form: It makes it clear that the cm applies to the whole function, rather than foundation for higher level context managers that manipulate the exit So how to pass data with redirect? There are legitimate use cases for redirecting to URL that is read from user input. the tools provided by contextlib. # closed automatically. statement. handled correctly. A view returning a redirect has to be added to your urls.py, like any other view: Assuming this is the main urls.py of your Django project, the URL /redirect/ now redirects to /redirect-success/. A base class that enables a context manager to also be used as a decorator. you need to use HttpResponseRedirect instead, I was with the same problem. when leaving any with statement, regardless of where those callbacks Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? io.StringIO object. it doesnt point to a different host and uses a safe scheme). Now you know why redirects make sense, but how do they work? Since you are facing this issue, I am assuming you have a basic idea on the working of Django. Browsers behave similarly when handling redirects: when a URL returns a permanent redirect response, this response is cached. This means that you can access them even after a redirect. The variability The method you should override instead is get_context_data (), where you can attach extra context safely. exception. If the given class, in this case Product, doesnt have a get_absolute_url() method, this will fail with a TypeError. Unlike the other methods, callbacks added this way cannot suppress I use Django messages to store my parameter. You could build such a response yourself from a regular HttpResponse object: This solution is technically correct, but it involves quite a bit of typing. support Django development. To make your life easier, Django provides the versatile shortcut function youve already seen in the introduction: django.shortcuts.redirect(). There is no bullet-proof way to prevent this kind of bug, but a good starting point is to check if the view you are redirecting to uses redirects itself. Your first view can create a message for the current using auth and have the second view read and delete it. Note: If youd like to build a URL shortener of your own, then check out Build a URL Shortener With FastAPI and Python. Build a Photo-sharing App with Django SitePoint Distinct from both single use and reentrant context managers are reusable Another example of a reusable, but not reentrant, context manager is How to pass context data with django redirect function? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Connect and share knowledge within a single location that is structured and easy to search. How to test context and session in Django after redirect? manage.py migrate creates a django_redirect table in your database.

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