"""

Bare-bones model

This is a basic model with only two non-primary-key fields.

"""

import uuid

from django.db import models

class Article(models.Model):

    headline = models.CharField(max_length=100, default="Default headline")

    pub_date = models.DateTimeField()

    class Meta:

        ordering = ("pub_date", "headline")

    def __str__(self):

        return self.headline

class FeaturedArticle(models.Model):

    article = models.OneToOneField(Article, models.CASCADE, related_name="featured")

class ArticleSelectOnSave(Article):

    class Meta:

        proxy = True

        select_on_save = True

class SelfRef(models.Model):

    selfref = models.ForeignKey(

        "self",

        models.SET_NULL,

        null=True,

        blank=True,

        related_name="+",

    )

    article = models.ForeignKey(Article, models.SET_NULL, null=True, blank=True)

    def __str__(self):

        # This method intentionally doesn't work for all cases - part

        # of the test for ticket #20278

        return SelfRef.objects.get(selfref=self).pk

class PrimaryKeyWithDefault(models.Model):

    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4)

class ChildPrimaryKeyWithDefault(PrimaryKeyWithDefault):

    pass