[1.1.X] Fixed #11709 — Pass inline fk_name attribute when grabbing foreign key...

    # exclude

    if hasattr(cls, 'exclude') and cls.exclude:

        fk = _get_foreign_key(parent_model, cls.model, can_fail=True)

        fk = _get_foreign_key(parent_model, cls.model, fk_name=cls.fk_name, can_fail=True)

        if fk and fk.name in cls.exclude:

            raise ImproperlyConfigured("%s cannot exclude the field "

                    "'%s' - this is the foreign key to the parent model "

from django.db import models

class Album(models.Model):

    title = models.CharField(max_length=150)

class Song(models.Model):

    title = models.CharField(max_length=150)

    album = models.ForeignKey(Album)

    def __unicode__(self):

        return self.title

class Model11709(models.Model):

    album1 = models.ForeignKey(Album, related_name="album1_set")

    album2 = models.ForeignKey(Album, related_name="album2_set")

    e = models.CharField(max_length=1)

__test__ = {'API_TESTS':"""

>>> from django import forms

>>> from django.contrib import admin

>>> from django.contrib.admin.validation import validate

>>> from django.contrib.admin.validation import validate, validate_inline

# Regression test for #8027: custom ModelForms with fields/fieldsets

    ...

ImproperlyConfigured: SongInline cannot exclude the field 'album' - this is the foreign key to the parent model Album.

# Regression test for #11709 - when testing for fk excluding (when exclude is

# given) make sure fk_name is honored or things blow up when there is more

# than one fk to the parent model.

>>> class Model11709Inline(admin.TabularInline):

...     model = Model11709

...     exclude = ("e",)

...     fk_name = "album1"

>>> validate_inline(Model11709Inline, None, Album)

"""}