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Fixed #19887 - Noted when callables may be used in ModelAdmin.fields …

…and ModelAdmin.fieldset.

Thanks Patrick Strasser for the suggestion and Zbigniew Siciarz for the patch.
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1 parent 1b7fb29 commit 722683f508566cf06bcc85f9f1810c3cde80344c @timgraham timgraham committed
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  1. +9 −0 docs/ref/contrib/admin/index.txt
9 docs/ref/contrib/admin/index.txt
@@ -186,6 +186,11 @@ subclass::
values defined in :attr:`ModelAdmin.readonly_fields` to be displayed as
+ The ``fields`` option, unlike :attr:`~ModelAdmin.list_display`, may contain
+ only field names of the model or the form specified by
+ :attr:`~ModelAdmin.form`, not callables. However it *can* contain callables
+ if they are defined in :attr:`~ModelAdmin.readonly_fields`.
To display multiple fields on the same line, wrap those fields in their own
tuple. In this example, the ``url`` and ``title`` fields will display on the
same line and the ``content`` field will be displayed below them in its
@@ -265,6 +270,10 @@ subclass::
``fields`` can contain values defined in
:attr:`~ModelAdmin.readonly_fields` to be displayed as read-only.
+ If you add a callable name to ``fields``, the same rule applies as
+ with :attr:`~ModelAdmin.fields` option: the callable must be
+ specified in :attr:`~ModelAdmin.readonly_fields`.
* ``classes``
A list containing extra CSS classes to apply to the fieldset.

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