[Django] #17547: How to suppress icon_addlink.gif (RelatedFieldWidgetWrapper) in admin interfaces

[Django]

#17547: How to suppress icon_addlink.gif (RelatedFieldWidgetWrapper) in admin
interfaces
-------------------------------+--------------------
     Reporter:  gcc            |      Owner:  nobody
         Type:  New feature    |     Status:  new
    Component:  contrib.admin  |    Version:  1.3
     Severity:  Normal         |   Keywords:
 Triage Stage:  Unreviewed     |  Has patch:  1
Easy pickings:  0              |      UI/UX:  0
-------------------------------+--------------------
 BaseModelAdmin's formfield_for_dbfield() method always wraps relations to
 other tables (ForeignKey and ManyToManyField) in a
 RelatedFieldWidgetWrapper, which renders a green Add button next to the
 field.

 You might not want to show this to users, if you're building your
 interface on top of the admin interface to get automatic CRUD operations.
 However it's difficult to prevent:

 {{{
     def formfield_for_dbfield(self, db_field, **kwargs):
         ...
         if isinstance(db_field, (models.ForeignKey,
 models.ManyToManyField)):
             ...
             # For non-raw_id fields, wrap the widget with a wrapper that
 adds
             # extra HTML -- the "add other" interface -- to the end of the
             # rendered output. formfield can be None if it came from a
             # OneToOneField with parent_link=True or a M2M intermediary.
             if formfield and db_field.name not in self.raw_id_fields:
                 related_modeladmin = self.admin_site._registry.get(
 db_field.rel.to)
                 can_add_related = bool(related_modeladmin and
 related_modeladmin.has_add_permission(request))
                 formfield.widget = widgets.RelatedFieldWidgetWrapper(
                             formfield.widget, db_field.rel,
 self.admin_site,
                             can_add_related=can_add_related)

             return formfield
 }}}

 I worked around this by overriding `formfield_for_dbfield` to undo the
 wrapping:

 {{{
 class DocumentAdmin(admin.ModelAdmin):
     def formfield_for_dbfield(self, db_field, **kwargs):
         old_formfield = admin.ModelAdmin.formfield_for_dbfield(self,
 db_field,
             **kwargs)
         if (hasattr(old_formfield, 'widget') and
             isinstance(old_formfield.widget, RelatedFieldWidgetWrapper)):
             old_formfield.widget.can_add_related = False
         return old_formfield
 }}}

 However it would be nice to have a keyword argument to disable this
 behaviour.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/17547>
Django <https://code.djangoproject.com/>
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