"""

Tests of ModelAdmin system checks logic.

"""

from django.contrib.contenttypes.fields import GenericForeignKey

from django.contrib.contenttypes.models import ContentType

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, models.CASCADE)

    original_release = models.DateField(editable=False)

    class Meta:

        ordering = ("title",)

    def __str__(self):

        return self.title

    def readonly_method_on_model(self):

        # does nothing

        pass

class TwoAlbumFKAndAnE(models.Model):

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

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

    e = models.CharField(max_length=1)

class Author(models.Model):

    name = models.CharField(max_length=100)

class Book(models.Model):

    name = models.CharField(max_length=100)

    subtitle = models.CharField(max_length=100)

    price = models.FloatField()

    authors = models.ManyToManyField(Author, through="AuthorsBooks")

class AuthorsBooks(models.Model):

    author = models.ForeignKey(Author, models.CASCADE)

    book = models.ForeignKey(Book, models.CASCADE)

    featured = models.BooleanField()

class State(models.Model):

    name = models.CharField(max_length=15)

class City(models.Model):

    state = models.ForeignKey(State, models.CASCADE)

class Influence(models.Model):

    name = models.TextField()

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

    object_id = models.PositiveIntegerField()

    content_object = GenericForeignKey("content_type", "object_id")