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from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
from django.contrib.contenttypes.models import ContentType
from django.db import models
class Episode(models.Model):
name = models.CharField(max_length=100)
length = models.CharField(max_length=100, blank=True)
author = models.CharField(max_length=100, blank=True)
class Media(models.Model):
"""
Media that can associated to any object.
"""
content_type = models.ForeignKey(ContentType, models.CASCADE)
object_id = models.PositiveIntegerField()
content_object = GenericForeignKey()
url = models.URLField()
description = models.CharField(max_length=100, blank=True)
keywords = models.CharField(max_length=100, blank=True)
def __str__(self):
return self.url
#
# Generic inline with unique_together
#
class Category(models.Model):
name = models.CharField(max_length=50)
class PhoneNumber(models.Model):
content_type = models.ForeignKey(ContentType, models.CASCADE)
object_id = models.PositiveIntegerField()
content_object = GenericForeignKey("content_type", "object_id")
phone_number = models.CharField(max_length=30)
category = models.ForeignKey(Category, models.SET_NULL, null=True, blank=True)
class Meta:
unique_together = (
(
"content_type",
"object_id",
"phone_number",
),
)
class Contact(models.Model):
name = models.CharField(max_length=50)
phone_numbers = GenericRelation(PhoneNumber, related_query_name="phone_numbers")
#
# Generic inline with can_delete=False
#
class EpisodePermanent(Episode):
pass
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