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Fixed #17182 -- Changed best practice documentation for Form.clean to use super() instead of relying on self.cleaned_data. Thanks, DrMeers.

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@17433 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Jannis Leidel 2012-02-04 16:05:30 +00:00
parent faeee611d6
commit 52d72a5a3e
1 changed files with 5 additions and 2 deletions
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7
docs/ref/forms/validation.txt
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@ -300,7 +300,7 @@ example::
... ...
def clean(self): def clean(self):
cleaned_data = self.cleaned_data cleaned_data = super(ContactForm, self).clean()
cc_myself = cleaned_data.get("cc_myself") cc_myself = cleaned_data.get("cc_myself")
subject = cleaned_data.get("subject") subject = cleaned_data.get("subject")
@ -316,6 +316,9 @@ example::
In this code, if the validation error is raised, the form will display an In this code, if the validation error is raised, the form will display an
error message at the top of the form (normally) describing the problem. error message at the top of the form (normally) describing the problem.
Note that the call to ``super(ContactForm, self).clean()`` in the example code
ensures that any validation logic in parent classes is maintained.
The second approach might involve assigning the error message to one of the The second approach might involve assigning the error message to one of the
fields. In this case, let's assign an error message to both the "subject" and fields. In this case, let's assign an error message to both the "subject" and
"cc_myself" rows in the form display. Be careful when doing this in practice, "cc_myself" rows in the form display. Be careful when doing this in practice,
@ -329,7 +332,7 @@ sample) looks like this::
... ...
def clean(self): def clean(self):
cleaned_data = self.cleaned_data cleaned_data = super(ContactForm, self).clean()
cc_myself = cleaned_data.get("cc_myself") cc_myself = cleaned_data.get("cc_myself")
subject = cleaned_data.get("subject") subject = cleaned_data.get("subject")