from django.contrib import admin

from django.db import models

from django.utils.translation import gettext_lazy as _

class Site(models.Model):

    domain = models.CharField(max_length=100)

    def __str__(self):

        return self.domain

class Article(models.Model):

    """

    A simple Article model for testing

    """

    site = models.ForeignKey(Site, models.CASCADE, related_name="admin_articles")

    title = models.CharField(max_length=100)

    hist = models.CharField(

        max_length=100,

        verbose_name=_("History"),

        help_text=_("History help text"),

    )

    created = models.DateTimeField(null=True)

    def __str__(self):

        return self.title

    def test_from_model(self):

        return "nothing"

    @admin.display(description="not What you Expect")

    def test_from_model_with_override(self):

        return "nothing"

class ArticleProxy(Article):

    class Meta:

        proxy = True

class Count(models.Model):

    num = models.PositiveSmallIntegerField()

    parent = models.ForeignKey("self", models.CASCADE, null=True)

    def __str__(self):

        return str(self.num)

class Event(models.Model):

    date = models.DateTimeField(auto_now_add=True)

class Location(models.Model):

    event = models.OneToOneField(Event, models.CASCADE, verbose_name="awesome event")

class Guest(models.Model):

    event = models.OneToOneField(Event, models.CASCADE)

    name = models.CharField(max_length=255)

    class Meta:

        verbose_name = "awesome guest"

class EventGuide(models.Model):

    event = models.ForeignKey(Event, models.DO_NOTHING)

class Vehicle(models.Model):

    pass

class VehicleMixin(Vehicle):

    vehicle = models.OneToOneField(

        Vehicle,

        models.CASCADE,

        parent_link=True,

        related_name="vehicle_%(app_label)s_%(class)s",

    )

    class Meta:

        abstract = True

class Car(VehicleMixin):

    pass