Allow CharField's with choice to be overriden using filter_overrides

[yeago]

This line seems to prevent anything with 'choices' to be overridable with filter_overrides.

http://github.com/alex/django-filter/blob/master/django_filters/filterset.py#L277

[yeago]

I changed line to:

 if not f.__class__ in cls.filter_overrides and f.choices:

[tshddx]

Might this be related to this issue: http://github.com/alex/django-filter/issues#issue/30 ?

My CharField with choices works fine (renders as a select element) unless I explicitly specify the field in my FilterSet. Thus I am unable to override the widget for a CharField with choices to use, for example, radio buttons instead of a select element.

[nkryptic]

The filter_overrides is probably too generic to be used for handling this case. I think a better mens of addressing it would be to add a widgets attribute to FilterSet.Meta class and deal with it in the same way a ModelForm does.

[carltongibson]

Somewhere in the sands of time this one got lost. filter_overrides only makes an appearance in the filter_for_field class method and not in any way that makes sense of this issue.