AttributeError (no filter_vertical at TabularInline or StackedInline)

[anonymous]

Example:

class BlogOptions(admin.ModelAdmin):
    list_display = ('title', 'number_of_entries')
    inlines = [admin.TabularInline(Entry, extra=2)]
    prepopulate_fields = {'slug': ('title', 'subtitle')}

admin.site.register(Blog, BlogOptions)

Url admin/app/blog/add/ gives:

AttributeError at /admin/blogfarm/blog/add/
'TabularInline' object has no attribute 'filter_vertical'

it points to the line 112:

 111. # For ManyToManyFields with a filter interface, use a special widget.
 112. if isinstance(db_field, models.ManyToManyField) and db_field.name in (self.filter_vertical + self.filter_horizontal):
 113.     kwargs['widget'] = widgets.FilteredSelectMultiple(db_field.verbose_name, (db_field.name in self.filter_vertical))
 114.     return db_field.formfield(**kwargs)

Got the same error working for StackedInline.

Both Blog and Entry have ManytoManyFields.

Using revision #5596 of the newforms-admin branch.

[Russell Keith-Magee]

(In [6025]) newforms-admin: Fixed #4761 -- Moved default definition of filter_horizontal and filter_vertical so that inline edits work with M2M fields.