modelform_factory should accept widgets argument

[SardarNL]

Since Django 1.2 model forms can override widgets by specifying 'widgets' attribute in Meta, similar to 'fields' or 'exclude'. The modelform_factory doesn't accept widgets, so the only way to specify it is by defining a new parent ModelForm with Meta and giving it as 'form' argument. This is more complex than it needs to be.

The fix is to add new keyword argument widgets=None and add:

if widgets is not None:
        attrs['widgets'] = widgets

right after similar if for 'exclude'. This will add 'widgets' attribute to dynamically created Meta.

[SardarNL]

simple patch

[Russell Keith-Magee]

Three points:

• This is a new feature, so it can't be on the 1.3 milestone
• Please use unified diffs (i.e., the format generated by svn diff), rather than context diffs
• Any patch for a new feature requires tests.

[Will Hardy]

Updated the diff to the current trunk and added a test

[Peter van Kampen]

This patch should probably also update the docs(tring) if/when #10239 is applied?

[Russell Keith-Magee]

In [16659]:

Fixed #15315 -- Added support for the 'widget' argument to modelform_factory. Thanks to SardarNL and Will Hardy for the patch.