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from django.contrib import admin
from django.contrib.admin.options import ModelAdmin
from django.contrib.auth.models import User
from django.db.models import F
from django.test import RequestFactory, TestCase
from .models import (
Band,
DynOrderingBandAdmin,
Song,
SongInlineDefaultOrdering,
SongInlineNewOrdering,
)
class MockRequest:
pass
class MockSuperUser:
def has_perm(self, perm, obj=None):
return True
def has_module_perms(self, module):
return True
request = MockRequest()
request.user = MockSuperUser()
site = admin.AdminSite()
class TestAdminOrdering(TestCase):
"""
Let's make sure that ModelAdmin.get_queryset uses the ordering we define
in ModelAdmin rather that ordering defined in the model's inner Meta
class.
"""
request_factory = RequestFactory()
@classmethod
def setUpTestData(cls):
Band.objects.bulk_create(
[
Band(name="Aerosmith", bio="", rank=3),
Band(name="Radiohead", bio="", rank=1),
Band(name="Van Halen", bio="", rank=2),
]
)
def test_default_ordering(self):
"""
The default ordering should be by name, as specified in the inner Meta
class.
"""
ma = ModelAdmin(Band, site)
names = [b.name for b in ma.get_queryset(request)]
self.assertEqual(["Aerosmith", "Radiohead", "Van Halen"], names)
def test_specified_ordering(self):
"""
Let's use a custom ModelAdmin that changes the ordering, and make sure
it actually changes.
"""
class BandAdmin(ModelAdmin):
ordering = ("rank",) # default ordering is ('name',)
ma = BandAdmin(Band, site)
names = [b.name for b in ma.get_queryset(request)]
self.assertEqual(["Radiohead", "Van Halen", "Aerosmith"], names)
def test_specified_ordering_by_f_expression(self):
class BandAdmin(ModelAdmin):
ordering = (F("rank").desc(nulls_last=True),)
band_admin = BandAdmin(Band, site)
names = [b.name for b in band_admin.get_queryset(request)]
self.assertEqual(["Aerosmith", "Van Halen", "Radiohead"], names)
def test_dynamic_ordering(self):
"""
Let's use a custom ModelAdmin that changes the ordering dynamically.
"""
super_user = User.objects.create(username="admin", is_superuser=True)
other_user = User.objects.create(username="other")
request = self.request_factory.get("/")
request.user = super_user
ma = DynOrderingBandAdmin(Band, site)
names = [b.name for b in ma.get_queryset(request)]
self.assertEqual(["Radiohead", "Van Halen", "Aerosmith"], names)
request.user = other_user
names = [b.name for b in ma.get_queryset(request)]
self.assertEqual(["Aerosmith", "Radiohead", "Van Halen"], names)
class TestInlineModelAdminOrdering(TestCase):
"""
Let's make sure that InlineModelAdmin.get_queryset uses the ordering we
define in InlineModelAdmin.
"""
@classmethod
def setUpTestData(cls):
cls.band = Band.objects.create(name="Aerosmith", bio="", rank=3)
Song.objects.bulk_create(
[
Song(band=cls.band, name="Pink", duration=235),
Song(band=cls.band, name="Dude (Looks Like a Lady)", duration=264),
Song(band=cls.band, name="Jaded", duration=214),
]
)
def test_default_ordering(self):
"""
The default ordering should be by name, as specified in the inner Meta
class.
"""
inline = SongInlineDefaultOrdering(self.band, site)
names = [s.name for s in inline.get_queryset(request)]
self.assertEqual(["Dude (Looks Like a Lady)", "Jaded", "Pink"], names)
def test_specified_ordering(self):
"""
Let's check with ordering set to something different than the default.
"""
inline = SongInlineNewOrdering(self.band, site)
names = [s.name for s in inline.get_queryset(request)]
self.assertEqual(["Jaded", "Pink", "Dude (Looks Like a Lady)"], names)
class TestRelatedFieldsAdminOrdering(TestCase):
@classmethod
def setUpTestData(cls):
cls.b1 = Band.objects.create(name="Pink Floyd", bio="", rank=1)
cls.b2 = Band.objects.create(name="Foo Fighters", bio="", rank=5)
def setUp(self):
# we need to register a custom ModelAdmin (instead of just using
# ModelAdmin) because the field creator tries to find the ModelAdmin
# for the related model
class SongAdmin(admin.ModelAdmin):
pass
site.register(Song, SongAdmin)
def tearDown(self):
site.unregister(Song)
if Band in site._registry:
site.unregister(Band)
def check_ordering_of_field_choices(self, correct_ordering):
fk_field = site._registry[Song].formfield_for_foreignkey(
Song.band.field, request=None
)
m2m_field = site._registry[Song].formfield_for_manytomany(
Song.other_interpreters.field, request=None
)
self.assertEqual(list(fk_field.queryset), correct_ordering)
self.assertEqual(list(m2m_field.queryset), correct_ordering)
def test_no_admin_fallback_to_model_ordering(self):
# should be ordered by name (as defined by the model)
self.check_ordering_of_field_choices([self.b2, self.b1])
def test_admin_with_no_ordering_fallback_to_model_ordering(self):
class NoOrderingBandAdmin(admin.ModelAdmin):
pass
site.register(Band, NoOrderingBandAdmin)
# should be ordered by name (as defined by the model)
self.check_ordering_of_field_choices([self.b2, self.b1])
def test_admin_ordering_beats_model_ordering(self):
class StaticOrderingBandAdmin(admin.ModelAdmin):
ordering = ("rank",)
site.register(Band, StaticOrderingBandAdmin)
# should be ordered by rank (defined by the ModelAdmin)
self.check_ordering_of_field_choices([self.b1, self.b2])
def test_custom_queryset_still_wins(self):
"""Custom queryset has still precedence (#21405)"""
class SongAdmin(admin.ModelAdmin):
# Exclude one of the two Bands from the querysets
def formfield_for_foreignkey(self, db_field, request, **kwargs):
if db_field.name == "band":
kwargs["queryset"] = Band.objects.filter(rank__gt=2)
return super().formfield_for_foreignkey(db_field, request, **kwargs)
def formfield_for_manytomany(self, db_field, request, **kwargs):
if db_field.name == "other_interpreters":
kwargs["queryset"] = Band.objects.filter(rank__gt=2)
return super().formfield_for_foreignkey(db_field, request, **kwargs)
class StaticOrderingBandAdmin(admin.ModelAdmin):
ordering = ("rank",)
site.unregister(Song)
site.register(Song, SongAdmin)
site.register(Band, StaticOrderingBandAdmin)
self.check_ordering_of_field_choices([self.b2])
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