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Changes between Version 20 and Version 21 of NewbieMistakes

-              v20
+              v21
 = NewbieMistakes =
+= Newbie mistakes =
 Please feel free to share the things that tripped you up when you started with Django. We'll try to improve Django's error handling to catch such mistakes in the future.
 …
 ==== Symptom ====
 You are having a form that does a POST to some view and the view doesn't get the POST data from the form.
+You've got a form that does a POST to some view, and the view doesn't get the POST data from the form.
 ==== Probable cause ====
+You might missing the / at the end of the form action. If that is the case, the CommonMiddleware redirects
+to the exact name of the view - and that always includes a trailing /. Because it does so by using the
+standard HTTP redirection through Location header, it can't pass on the POST data - and that's why it gets lost.
+You might be missing the / at the end of the form {{{action}}}. If that's the case, the {{{CommonMiddleware}}} (check your {{{MIDDLEWARE_CLASSES}}} redirects to the exact name of the view - and that always includes a trailing slash. Because it does so by using the standard HTTP redirection through Location header, it can't pass on the POST data - and that's why it gets lost.
 ==== Solution ====
 Allways make sure that your form actions end with / like this:
+Always make sure that your form actions end with a slash, like this:
 {{{
 …
 </form>
 }}}
+Note that Django now attempts to catch this problem, as of [3109].