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Fixed #13949 - Note that readonly fields can't be modified via custom…

… clean methods. thanks alk for the suggestion and elbarto and Gabriel Hurley whose language I used in the final patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15060 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 38d60c394166367b9ec0782093784a0d4c2947ab 1 parent 4b2b2ed
@timgraham timgraham authored
Showing with 6 additions and 2 deletions.
  1. +6 −2 docs/topics/forms/index.txt
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8 docs/topics/forms/index.txt
@@ -139,7 +139,11 @@ While you could access ``request.POST`` directly at this point, it is better to
access ``form.cleaned_data``. This data has not only been validated but will
also be converted in to the relevant Python types for you. In the above example,
``cc_myself`` will be a boolean value. Likewise, fields such as ``IntegerField``
-and ``FloatField`` convert values to a Python int and float respectively.
+and ``FloatField`` convert values to a Python int and float respectively. Note
+that read-only fields are not available in ``form.cleaned_data`` (and setting
+a value in a custom ``clean()`` method won't have any effect) because these
+fields are displayed as text rather than as input elements, and thus are not
+posted back to the server.
Extending the above example, here's how the form data could be processed:
@@ -390,5 +394,5 @@ This covers the basics, but forms can do a whole lot more:
.. seealso::
:doc:`The Forms Reference </ref/forms/index>`
- Covers the full API reference, including form fields, form widgets,
+ Covers the full API reference, including form fields, form widgets,
and form and field validation.
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