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from django.db import models
from django.contrib import admin
from django.contrib.contenttypes import generic
from django.contrib.contenttypes.models import ContentType
class Episode(models.Model):
name = models.CharField(max_length=100)
class Media(models.Model):
"""
Media that can associated to any object.
"""
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey()
url = models.URLField(verify_exists=False)
def __unicode__(self):
return self.url
class MediaInline(generic.GenericTabularInline):
model = Media
class EpisodeAdmin(admin.ModelAdmin):
inlines = [
MediaInline,
]
admin.site.register(Episode, EpisodeAdmin)
#
# These models let us test the different GenericInline settings at
# different urls in the admin site.
#
#
# Generic inline with extra = 0
#
class EpisodeExtra(Episode):
pass
class MediaExtraInline(generic.GenericTabularInline):
model = Media
extra = 0
admin.site.register(EpisodeExtra, inlines=[MediaExtraInline])
#
# Generic inline with extra and max_num
#
class EpisodeMaxNum(Episode):
pass
class MediaMaxNumInline(generic.GenericTabularInline):
model = Media
extra = 5
max_num = 2
admin.site.register(EpisodeMaxNum, inlines=[MediaMaxNumInline])
#
# Generic inline with exclude
#
class EpisodeExclude(Episode):
pass
class MediaExcludeInline(generic.GenericTabularInline):
model = Media
exclude = ['url']
admin.site.register(EpisodeExclude, inlines=[MediaExcludeInline])
#
# Generic inline with unique_together
#
class PhoneNumber(models.Model):
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey('content_type', 'object_id')
phone_number = models.CharField(max_length=30)
class Meta:
unique_together = (('content_type', 'object_id', 'phone_number',),)
class Contact(models.Model):
name = models.CharField(max_length=50)
phone_numbers = generic.GenericRelation(PhoneNumber)
class PhoneNumberInline(generic.GenericTabularInline):
model = PhoneNumber
admin.site.register(Contact, inlines=[PhoneNumberInline])
#
# Generic inline with can_delete=False
#
class EpisodePermanent(Episode):
pass
class MediaPermanentInline(generic.GenericTabularInline):
model = Media
can_delete = False
admin.site.register(EpisodePermanent, inlines=[MediaPermanentInline])
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