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from __future__ import unicode_literals
from django.db import models
from django.utils.translation import ugettext_lazy as _


class RESTFrameworkModel(models.Model):
    """
    Base for test models that sets app_label, so they play nicely.
    """

    class Meta:
        app_label = 'tests'
        abstract = True


class BasicModel(RESTFrameworkModel):
    text = models.CharField(max_length=100, verbose_name=_("Text comes here"), help_text=_("Text description."))


class SlugBasedModel(RESTFrameworkModel):
    text = models.CharField(max_length=100)
    slug = models.SlugField(max_length=32)


class BaseFilterableItem(RESTFrameworkModel):
    text = models.CharField(max_length=100)

    class Meta:
        abstract = True


class FilterableItem(BaseFilterableItem):
    decimal = models.DecimalField(max_digits=4, decimal_places=2)
    date = models.DateField()


# Model for regression test for #285
class Comment(RESTFrameworkModel):
    email = models.EmailField()
    content = models.CharField(max_length=200)
    created = models.DateTimeField(auto_now_add=True)


# Models for relations tests
# ManyToMany
class ManyToManyTarget(RESTFrameworkModel):
    name = models.CharField(max_length=100)


class ManyToManySource(RESTFrameworkModel):
    name = models.CharField(max_length=100)
    targets = models.ManyToManyField(ManyToManyTarget, related_name='sources')


# ForeignKey
class ForeignKeyTarget(RESTFrameworkModel):
    name = models.CharField(max_length=100)


class ForeignKeySource(RESTFrameworkModel):
    name = models.CharField(max_length=100)
    target = models.ForeignKey(ForeignKeyTarget, related_name='sources',
                               help_text='Target', verbose_name='Target')


# Nullable ForeignKey
class NullableForeignKeySource(RESTFrameworkModel):
    name = models.CharField(max_length=100)
    target = models.ForeignKey(ForeignKeyTarget, null=True, blank=True,
                               related_name='nullable_sources',
                               verbose_name='Optional target object')


# OneToOne
class OneToOneTarget(RESTFrameworkModel):
    name = models.CharField(max_length=100)


class NullableOneToOneSource(RESTFrameworkModel):
    name = models.CharField(max_length=100)
    target = models.OneToOneField(OneToOneTarget, null=True, blank=True,
                                  related_name='nullable_source')