Allow ForeignKey to a parent class when using inlines

mrph. Code from above in code formatting. Sorry.

class Place(models.Model):
    name = models.CharField(max_length=50)
    address = models.CharField(max_length=80)

class Restaurant(Place):
    serves_hot_dogs = models.BooleanField()
    serves_pizza = models.BooleanField?()

class Owner:
    name = models.CharField(max_length=100)
    place = models.ForeignKey(Place)

class OwnerInline(admin.TabularInline):
    model = Owner
    extra = 5

class PlaceAdmin(admin.ModelAdmin):
    model = Place
    inlines = [OwnerInline]

Fixed ticket description formatting.

Updated to handle fail

Updated patch to handle the OneToOneField? value being null when you're first adding a Restaurant, which blows up because it's not a nullable field (since it's a PK) but doesn't have a value (because the Restaurant isn't saved yet). Sorry.

Don't change the stage. That is reserved for ticket triagers and committers. The ticket itself is accepted, you don't need to do that when you upload a new patch. The needs_better_patch is meant for that :)

Cool -- I figured that the newer patch wasn't reviewed :) no problem!

It is likely [8165] has fixed this. Can someone verify? Perhaps a test case should be ordered :)

It seems to be working now if the ForeinKey? is in the direct super class, but not if it's in a higher class.

So, this is working:

class Place(models.Model):
    name = models.CharField(max_length=50)
    address = models.CharField(max_length=80)

class Restaurant(Place):
    serves_hot_dogs = models.BooleanField()
    serves_pizza = models.BooleanField()

class Owner(models.Model):
    name = models.CharField(max_length=100)
    place = models.ForeignKey(Place)

class OwnerInline(admin.TabularInline): 
    model = Owner
    extra = 5

class PlaceAdmin(admin.ModelAdmin):
    model = Place
    inlines = [OwnerInline]

class RestaurantAdmin(admin.ModelAdmin):
    model = Restaurant
    inlines = [OwnerInline]

But not this:

class ItalianRestaurant(Restaurant):
    pass

class ItalianRestaurantAdmin(admin.ModelAdmin):
    model = ItalianRestaurant
    inlines = [OwnerInline]

(In [8708]) Fixed #7918 -- Allow the foreign key in an inline to be any where in the parent chain. Thanks sil for the report.