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[2.1.x] Fixed #16995 -- Clarified interaction of initial and extra with model formsets. 

Backport of 28dac56aed from master
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melipone 2018-09-06 12:00:45 +01:00 committed by Tim Graham
parent 1853e2dbf2
commit 24b3aa0275
2 changed files with 5 additions and 2 deletions
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AUTHORS
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@ -521,6 +521,7 @@ answer newbie questions, and generally made Django that much better:
Mario Gonzalez <gonzalemario@gmail.com>
Mariusz Felisiak <felisiak.mariusz@gmail.com>
Mark Biggers <biggers@utsl.com>
Mark Gensler <mark.gensler@protonmail.com>
mark@junklight.com
Mark Lavin <markdlavin@gmail.com>
Mark Sandstrom <mark@deliciouslynerdy.com>

6
docs/topics/forms/modelforms.txt
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@ -877,8 +877,10 @@ As with regular formsets, it's possible to :ref:`specify initial data
parameter when instantiating the model formset class returned by
:func:`~django.forms.models.modelformset_factory`. However, with model
formsets, the initial values only apply to extra forms, those that aren't
attached to an existing model instance. If the extra forms with initial data
aren't changed by the user, they won't be validated or saved.
attached to an existing model instance. If the length of ``initial`` exceeds
the number of extra forms, the excess initial data is ignored. If the extra
forms with initial data aren't changed by the user, they won't be validated or
saved.
.. _saving-objects-in-the-formset: