#14802: feature request: ability to override default hidden_widget used to
render a
custom model field when marked as readonly in the admin
---------------------------------------------+------------------------------
Reporter: nickname123 | Owner: nobody
Status: reopened | Milestone: 1.3
Component: django.contrib.admin | Version: 1.2
Resolution: | Keywords: sprintdec2010
hidden_widget
Stage: Design decision needed | Has_patch: 0
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
---------------------------------------------+------------------------------
Changes (by nickname123):
* status: closed => reopened
* resolution: wontfix =>
Comment:
Replying to [comment:1 cogat]:
> The admin app doesn't render hidden_widget at all, it just displays
readonly fields (using `getattr(modelinstance, fieldname)`). AFAICS
hidden_widget is only used by form previews and form wizards for holding
on to copies of fields that were entered in an earlier view.
>
> If you are asking for a customised way to render a read-only field, then
it might be helpful to know that you can pass a callable to
readonly_fields that renders the result you want.
>
> {{{
> class Song(models.Model):
> band = models.ForeignKey(Band)
> title = CustomModelField(max_length=100)
>
> def rendertitle(self):
> return "A custom rendering of %s" % self.title
>
> class SongAdmin(admin.ModelAdmin):
> exclude = ('title',)
> readonly_fields = ('rendertitle', )
>
> }}}
Wouldn't it be a better idea (in the future) to use a widget to render the
readonly value so that the default appearance can be overridden? Using a
field like that may be nice in some situations, but it doesn't work well
for my use case.
I don't think it would work well with any abstract model that is used
repeatedly because you have to remember to add the callable to
readonly_fields in every model's admin entry that inherits it. And also
for admin inlines.
--
Ticket URL: <http://code.djangoproject.com/ticket/14802#comment:2>
Django <http://code.djangoproject.com/>
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