django/tests/serializers_regress/models.py

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"""
A test spanning all the capabilities of all the serializers.
This class sets up a model for each model field type
(except for image types, because of the Pillow/PIL dependency).
"""
import warnings
from django.db import models
from django.contrib.contenttypes import generic
from django.contrib.contenttypes.models import ContentType
# The following classes are for testing basic data
# marshalling, including NULL values, where allowed.
class BinaryData(models.Model):
data = models.BinaryField(null=True)
class BooleanData(models.Model):
data = models.BooleanField(default=False)
class CharData(models.Model):
data = models.CharField(max_length=30, null=True)
class DateData(models.Model):
data = models.DateField(null=True)
class DateTimeData(models.Model):
data = models.DateTimeField(null=True)
class DecimalData(models.Model):
data = models.DecimalField(null=True, decimal_places=3, max_digits=5)
class EmailData(models.Model):
data = models.EmailField(null=True)
class FileData(models.Model):
data = models.FileField(null=True, upload_to='/foo/bar')
class FilePathData(models.Model):
data = models.FilePathField(null=True)
class FloatData(models.Model):
data = models.FloatField(null=True)
class IntegerData(models.Model):
data = models.IntegerField(null=True)
class BigIntegerData(models.Model):
data = models.BigIntegerField(null=True)
# class ImageData(models.Model):
# data = models.ImageField(null=True)
class IPAddressData(models.Model):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
data = models.IPAddressField(null=True)
class GenericIPAddressData(models.Model):
data = models.GenericIPAddressField(null=True)
class NullBooleanData(models.Model):
data = models.NullBooleanField(null=True)
class PositiveIntegerData(models.Model):
data = models.PositiveIntegerField(null=True)
class PositiveSmallIntegerData(models.Model):
data = models.PositiveSmallIntegerField(null=True)
class SlugData(models.Model):
data = models.SlugField(null=True)
class SmallData(models.Model):
data = models.SmallIntegerField(null=True)
class TextData(models.Model):
data = models.TextField(null=True)
class TimeData(models.Model):
data = models.TimeField(null=True)
class Tag(models.Model):
"""A tag on an item."""
data = models.SlugField()
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey()
class Meta:
ordering = ["data"]
class GenericData(models.Model):
data = models.CharField(max_length=30)
tags = generic.GenericRelation(Tag)
# The following test classes are all for validation
# of related objects; in particular, forward, backward,
# and self references.
class Anchor(models.Model):
"""This is a model that can be used as
something for other models to point at"""
data = models.CharField(max_length=30)
class Meta:
ordering = ('id',)
class NaturalKeyAnchorManager(models.Manager):
def get_by_natural_key(self, data):
return self.get(data=data)
class NaturalKeyAnchor(models.Model):
objects = NaturalKeyAnchorManager()
data = models.CharField(max_length=100, unique=True)
title = models.CharField(max_length=100, null=True)
def natural_key(self):
return (self.data,)
class UniqueAnchor(models.Model):
"""This is a model that can be used as
something for other models to point at"""
data = models.CharField(unique=True, max_length=30)
class FKData(models.Model):
data = models.ForeignKey(Anchor, null=True)
class FKDataNaturalKey(models.Model):
data = models.ForeignKey(NaturalKeyAnchor, null=True)
class M2MData(models.Model):
data = models.ManyToManyField(Anchor, null=True)
class O2OData(models.Model):
# One to one field can't be null here, since it is a PK.
data = models.OneToOneField(Anchor, primary_key=True)
class FKSelfData(models.Model):
data = models.ForeignKey('self', null=True)
class M2MSelfData(models.Model):
data = models.ManyToManyField('self', null=True, symmetrical=False)
class FKDataToField(models.Model):
data = models.ForeignKey(UniqueAnchor, null=True, to_field='data')
class FKDataToO2O(models.Model):
data = models.ForeignKey(O2OData, null=True)
class M2MIntermediateData(models.Model):
data = models.ManyToManyField(Anchor, null=True, through='Intermediate')
class Intermediate(models.Model):
left = models.ForeignKey(M2MIntermediateData)
right = models.ForeignKey(Anchor)
extra = models.CharField(max_length=30, blank=True, default="doesn't matter")
# The following test classes are for validating the
# deserialization of objects that use a user-defined
# field as the primary key.
# Some of these data types have been commented out
# because they can't be used as a primary key on one
# or all database backends.
class BooleanPKData(models.Model):
data = models.BooleanField(primary_key=True, default=False)
class CharPKData(models.Model):
data = models.CharField(max_length=30, primary_key=True)
# class DatePKData(models.Model):
# data = models.DateField(primary_key=True)
# class DateTimePKData(models.Model):
# data = models.DateTimeField(primary_key=True)
class DecimalPKData(models.Model):
data = models.DecimalField(primary_key=True, decimal_places=3, max_digits=5)
class EmailPKData(models.Model):
data = models.EmailField(primary_key=True)
# class FilePKData(models.Model):
# data = models.FileField(primary_key=True, upload_to='/foo/bar')
class FilePathPKData(models.Model):
data = models.FilePathField(primary_key=True)
class FloatPKData(models.Model):
data = models.FloatField(primary_key=True)
class IntegerPKData(models.Model):
data = models.IntegerField(primary_key=True)
# class ImagePKData(models.Model):
# data = models.ImageField(primary_key=True)
class IPAddressPKData(models.Model):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
data = models.IPAddressField(primary_key=True)
class GenericIPAddressPKData(models.Model):
data = models.GenericIPAddressField(primary_key=True)
# This is just a Boolean field with null=True, and we can't test a PK value of NULL.
# class NullBooleanPKData(models.Model):
# data = models.NullBooleanField(primary_key=True)
class PositiveIntegerPKData(models.Model):
data = models.PositiveIntegerField(primary_key=True)
class PositiveSmallIntegerPKData(models.Model):
data = models.PositiveSmallIntegerField(primary_key=True)
class SlugPKData(models.Model):
data = models.SlugField(primary_key=True)
class SmallPKData(models.Model):
data = models.SmallIntegerField(primary_key=True)
# class TextPKData(models.Model):
# data = models.TextField(primary_key=True)
# class TimePKData(models.Model):
# data = models.TimeField(primary_key=True)
class ComplexModel(models.Model):
field1 = models.CharField(max_length=10)
field2 = models.CharField(max_length=10)
field3 = models.CharField(max_length=10)
# Tests for handling fields with pre_save functions, or
# models with save functions that modify data
class AutoNowDateTimeData(models.Model):
data = models.DateTimeField(null=True, auto_now=True)
class ModifyingSaveData(models.Model):
data = models.IntegerField(null=True)
def save(self, *args, **kwargs):
"""
A save method that modifies the data in the object.
Verifies that a user-defined save() method isn't called when objects
are deserialized (#4459).
"""
self.data = 666
super(ModifyingSaveData, self).save(*args, **kwargs)
# Tests for serialization of models using inheritance.
# Regression for #7202, #7350
class AbstractBaseModel(models.Model):
parent_data = models.IntegerField()
class Meta:
abstract = True
class InheritAbstractModel(AbstractBaseModel):
child_data = models.IntegerField()
class BaseModel(models.Model):
parent_data = models.IntegerField()
class InheritBaseModel(BaseModel):
child_data = models.IntegerField()
class ExplicitInheritBaseModel(BaseModel):
parent = models.OneToOneField(BaseModel)
child_data = models.IntegerField()
class ProxyBaseModel(BaseModel):
class Meta:
proxy = True
class ProxyProxyBaseModel(ProxyBaseModel):
class Meta:
proxy = True
class LengthModel(models.Model):
data = models.IntegerField()
def __len__(self):
return self.data