#30273: ModelAdmin for proxy model with InlineModelAdmin for superclass 
reference
results in admin.E202
-------------------------------------+-------------------------------------
               Reporter:             |          Owner:  nobody
  jwindhager                         |
                   Type:  Bug        |         Status:  new
              Component:             |        Version:  2.1
  contrib.admin                      |       Keywords:  proxy,
               Severity:  Normal     |  InlineModelAdmin, E202
           Triage Stage:             |      Has patch:  0
  Unreviewed                         |
    Needs documentation:  0          |    Needs tests:  0
Patch needs improvement:  0          |  Easy pickings:  0
                  UI/UX:  0          |
-------------------------------------+-------------------------------------
 Assume the following Django models:

 {{{#!python

 class Reporter(models.Model):
     ...


 class Journalist(Reporter):
     ...

     class Meta:
         proxy = True


 class Article(models.Model):
     reporter = models.ForeignKey(Reporter)
     ...

 }}}

 Register model admins as follows (exemplary):
 {{{#!python

 class ArticleInline(admin.TabularInline):
     model = Article
     fk_name = 'reporter'
     ...


 @admin.register(Journalist)
 class JournalistAdmin(admin.ModelAdmin):
     inlines = [ArticleInline]
     ...

 }}}

 This will result in the following error:
 {{{
 <class 'ArticleInline'>: (admin.E202) fk_name 'reporter' is not a
 ForeignKey to 'Journalist'.
 }}}

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30273>
Django <https://code.djangoproject.com/>
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