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Diffstat (limited to 'docs/topics/forms')
| -rw-r--r-- | docs/topics/forms/modelforms.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/docs/topics/forms/modelforms.txt b/docs/topics/forms/modelforms.txt index edf9de17dd..2a48aa75dc 100644 --- a/docs/topics/forms/modelforms.txt +++ b/docs/topics/forms/modelforms.txt @@ -651,6 +651,18 @@ There are a couple of things to note, however. because these classes rely on different metaclasses and a class can only have one metaclass. +.. versionadded:: 1.7 + +* It's possible to opt-out from a ``Field`` inherited from a parent class by + shadowing it. While any non-``Field`` value works for this purpose, it's + recommended to use ``None`` to make it explicit that a field is being + nullified. + + You can only use this technique to opt out from a field defined declaratively + by a parent class; it won't prevent the ``ModelForm`` metaclass from generating + a default field. To opt-out from default fields, see + :ref:`controlling-fields-with-fields-and-exclude`. + .. _modelforms-factory: ModelForm factory function @@ -749,6 +761,8 @@ instances of the model, you can specify an empty QuerySet:: >>> AuthorFormSet(queryset=Author.objects.none()) +.. _controlling-fields-with-fields-and-exclude: + Controlling which fields are used with ``fields`` and ``exclude`` ----------------------------------------------------------------- |