from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation

from django.contrib.contenttypes.models import ContentType

from django.db import models

class Award(models.Model):

    name = models.CharField(max_length=25)

    object_id = models.PositiveIntegerField()

    content_type = models.ForeignKey(ContentType, models.CASCADE)

    content_object = GenericForeignKey()

class AwardNote(models.Model):

    award = models.ForeignKey(Award, models.CASCADE)

    note = models.CharField(max_length=100)

class Person(models.Model):

    name = models.CharField(max_length=25)

    awards = GenericRelation(Award)

class Book(models.Model):

    pagecount = models.IntegerField()

    owner = models.ForeignKey("Child", models.CASCADE, null=True)

class Toy(models.Model):

    name = models.CharField(max_length=50)

class Child(models.Model):

    name = models.CharField(max_length=50)

    toys = models.ManyToManyField(Toy, through="PlayedWith")

class PlayedWith(models.Model):

    child = models.ForeignKey(Child, models.CASCADE)

    toy = models.ForeignKey(Toy, models.CASCADE)

    date = models.DateField(db_column="date_col")

class PlayedWithNote(models.Model):

    played = models.ForeignKey(PlayedWith, models.CASCADE)

    note = models.TextField()

class Contact(models.Model):

    label = models.CharField(max_length=100)

class Email(Contact):

    email_address = models.EmailField(max_length=100)

class Researcher(models.Model):

    contacts = models.ManyToManyField(Contact, related_name="research_contacts")

    primary_contact = models.ForeignKey(

        Contact, models.SET_NULL, null=True, related_name="primary_contacts"

    )

    secondary_contact = models.ForeignKey(

        Contact, models.SET_NULL, null=True, related_name="secondary_contacts"

    )

class Food(models.Model):

    name = models.CharField(max_length=20, unique=True)

class Eaten(models.Model):

    food = models.ForeignKey(Food, models.CASCADE, to_field="name")

    meal = models.CharField(max_length=20)

# Models for #15776

class Policy(models.Model):

    policy_number = models.CharField(max_length=10)

class Version(models.Model):

    policy = models.ForeignKey(Policy, models.CASCADE)

class Location(models.Model):

    version = models.ForeignKey(Version, models.SET_NULL, blank=True, null=True)

class Item(models.Model):

    version = models.ForeignKey(Version, models.CASCADE)

    location = models.ForeignKey(Location, models.SET_NULL, blank=True, null=True)

# Models for #16128

class File(models.Model):

    pass

class Image(File):

    class Meta:

        proxy = True

class Photo(Image):

    class Meta:

        proxy = True

class FooImage(models.Model):

    my_image = models.ForeignKey(Image, models.CASCADE)

class FooFile(models.Model):

    my_file = models.ForeignKey(File, models.CASCADE)

class FooPhoto(models.Model):

    my_photo = models.ForeignKey(Photo, models.CASCADE)

class FooFileProxy(FooFile):

    class Meta:

        proxy = True

class OrgUnit(models.Model):

    name = models.CharField(max_length=64, unique=True)

class Login(models.Model):

    description = models.CharField(max_length=32)

    orgunit = models.ForeignKey(OrgUnit, models.CASCADE)

class House(models.Model):

    address = models.CharField(max_length=32)

class OrderedPerson(models.Model):

    name = models.CharField(max_length=32)

    lives_in = models.ForeignKey(House, models.CASCADE)

    class Meta:

        ordering = ["name"]