mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-11-22 17:47:04 +03:00
6a95451d72
* fixes #6751 * reverted condition * save instance before setting m2m fields * added comment why m2m fields are saved after instance * removed blank line * added test for the issue 6751
1304 lines
48 KiB
Python
1304 lines
48 KiB
Python
"""
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The `ModelSerializer` and `HyperlinkedModelSerializer` classes are essentially
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shortcuts for automatically creating serializers based on a given model class.
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These tests deal with ensuring that we correctly map the model fields onto
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an appropriate set of serializer fields for each case.
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"""
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import datetime
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import decimal
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import sys
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from collections import OrderedDict
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import django
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import pytest
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from django.core.exceptions import ImproperlyConfigured
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from django.core.serializers.json import DjangoJSONEncoder
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from django.core.validators import (
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MaxValueValidator, MinLengthValidator, MinValueValidator
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)
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from django.db import models
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from django.db.models.signals import m2m_changed
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from django.dispatch import receiver
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from django.test import TestCase
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from rest_framework import serializers
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from rest_framework.compat import postgres_fields
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from .models import NestedForeignKeySource
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def dedent(blocktext):
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return '\n'.join([line[12:] for line in blocktext.splitlines()[1:-1]])
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# Tests for regular field mappings.
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# ---------------------------------
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class CustomField(models.Field):
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"""
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A custom model field simply for testing purposes.
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"""
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pass
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class OneFieldModel(models.Model):
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char_field = models.CharField(max_length=100)
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class RegularFieldsModel(models.Model):
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"""
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A model class for testing regular flat fields.
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"""
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auto_field = models.AutoField(primary_key=True)
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big_integer_field = models.BigIntegerField()
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boolean_field = models.BooleanField(default=False)
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char_field = models.CharField(max_length=100)
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comma_separated_integer_field = models.CommaSeparatedIntegerField(max_length=100)
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date_field = models.DateField()
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datetime_field = models.DateTimeField()
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decimal_field = models.DecimalField(max_digits=3, decimal_places=1)
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email_field = models.EmailField(max_length=100)
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float_field = models.FloatField()
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integer_field = models.IntegerField()
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null_boolean_field = models.NullBooleanField()
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positive_integer_field = models.PositiveIntegerField()
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positive_small_integer_field = models.PositiveSmallIntegerField()
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slug_field = models.SlugField(max_length=100)
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small_integer_field = models.SmallIntegerField()
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text_field = models.TextField(max_length=100)
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file_field = models.FileField(max_length=100)
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time_field = models.TimeField()
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url_field = models.URLField(max_length=100)
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custom_field = CustomField()
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file_path_field = models.FilePathField(path='/tmp/')
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def method(self):
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return 'method'
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COLOR_CHOICES = (('red', 'Red'), ('blue', 'Blue'), ('green', 'Green'))
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DECIMAL_CHOICES = (('low', decimal.Decimal('0.1')), ('medium', decimal.Decimal('0.5')), ('high', decimal.Decimal('0.9')))
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class FieldOptionsModel(models.Model):
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value_limit_field = models.IntegerField(validators=[MinValueValidator(1), MaxValueValidator(10)])
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length_limit_field = models.CharField(validators=[MinLengthValidator(3)], max_length=12)
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blank_field = models.CharField(blank=True, max_length=10)
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null_field = models.IntegerField(null=True)
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default_field = models.IntegerField(default=0)
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descriptive_field = models.IntegerField(help_text='Some help text', verbose_name='A label')
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choices_field = models.CharField(max_length=100, choices=COLOR_CHOICES)
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class ChoicesModel(models.Model):
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choices_field_with_nonstandard_args = models.DecimalField(max_digits=3, decimal_places=1, choices=DECIMAL_CHOICES, verbose_name='A label')
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class Issue3674ParentModel(models.Model):
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title = models.CharField(max_length=64)
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class Issue3674ChildModel(models.Model):
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parent = models.ForeignKey(Issue3674ParentModel, related_name='children', on_delete=models.CASCADE)
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value = models.CharField(primary_key=True, max_length=64)
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class UniqueChoiceModel(models.Model):
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CHOICES = (
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('choice1', 'choice 1'),
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('choice2', 'choice 1'),
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)
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name = models.CharField(max_length=254, unique=True, choices=CHOICES)
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class TestModelSerializer(TestCase):
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def test_create_method(self):
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class TestSerializer(serializers.ModelSerializer):
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non_model_field = serializers.CharField()
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class Meta:
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model = OneFieldModel
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fields = ('char_field', 'non_model_field')
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serializer = TestSerializer(data={
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'char_field': 'foo',
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'non_model_field': 'bar',
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})
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serializer.is_valid()
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msginitial = 'Got a `TypeError` when calling `OneFieldModel.objects.create()`.'
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with self.assertRaisesMessage(TypeError, msginitial):
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serializer.save()
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def test_abstract_model(self):
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"""
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Test that trying to use ModelSerializer with Abstract Models
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throws a ValueError exception.
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"""
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class AbstractModel(models.Model):
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afield = models.CharField(max_length=255)
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class Meta:
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abstract = True
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = AbstractModel
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fields = ('afield',)
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serializer = TestSerializer(data={
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'afield': 'foo',
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})
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msginitial = 'Cannot use ModelSerializer with Abstract Models.'
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with self.assertRaisesMessage(ValueError, msginitial):
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serializer.is_valid()
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class TestRegularFieldMappings(TestCase):
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def test_regular_fields(self):
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"""
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Model fields should map to their equivalent serializer fields.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = '__all__'
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=True)
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big_integer_field = IntegerField()
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boolean_field = BooleanField(required=False)
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char_field = CharField(max_length=100)
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comma_separated_integer_field = CharField(max_length=100, validators=[<django.core.validators.RegexValidator object>])
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date_field = DateField()
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datetime_field = DateTimeField()
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decimal_field = DecimalField(decimal_places=1, max_digits=3)
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email_field = EmailField(max_length=100)
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float_field = FloatField()
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integer_field = IntegerField()
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null_boolean_field = NullBooleanField(required=False)
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positive_integer_field = IntegerField()
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positive_small_integer_field = IntegerField()
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slug_field = SlugField(allow_unicode=False, max_length=100)
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small_integer_field = IntegerField()
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text_field = CharField(max_length=100, style={'base_template': 'textarea.html'})
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file_field = FileField(max_length=100)
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time_field = TimeField()
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url_field = URLField(max_length=100)
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custom_field = ModelField(model_field=<tests.test_model_serializer.CustomField: custom_field>)
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file_path_field = FilePathField(path='/tmp/')
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_field_options(self):
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = FieldOptionsModel
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fields = '__all__'
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expected = dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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value_limit_field = IntegerField(max_value=10, min_value=1)
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length_limit_field = CharField(max_length=12, min_length=3)
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blank_field = CharField(allow_blank=True, max_length=10, required=False)
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null_field = IntegerField(allow_null=True, required=False)
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default_field = IntegerField(required=False)
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descriptive_field = IntegerField(help_text='Some help text', label='A label')
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choices_field = ChoiceField(choices=(('red', 'Red'), ('blue', 'Blue'), ('green', 'Green')))
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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# merge this into test_regular_fields / RegularFieldsModel when
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# Django 2.1 is the minimum supported version
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@pytest.mark.skipif(django.VERSION < (2, 1), reason='Django version < 2.1')
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def test_nullable_boolean_field(self):
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class NullableBooleanModel(models.Model):
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field = models.BooleanField(null=True, default=False)
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class NullableBooleanSerializer(serializers.ModelSerializer):
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class Meta:
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model = NullableBooleanModel
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fields = ['field']
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expected = dedent("""
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NullableBooleanSerializer():
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field = BooleanField(allow_null=True, required=False)
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""")
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self.assertEqual(repr(NullableBooleanSerializer()), expected)
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def test_method_field(self):
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"""
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Properties and methods on the model should be allowed as `Meta.fields`
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values, and should map to `ReadOnlyField`.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'method')
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=True)
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method = ReadOnlyField()
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_pk_fields(self):
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"""
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Both `pk` and the actual primary key name are valid in `Meta.fields`.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('pk', 'auto_field')
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expected = dedent("""
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TestSerializer():
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pk = IntegerField(label='Auto field', read_only=True)
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auto_field = IntegerField(read_only=True)
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_extra_field_kwargs(self):
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"""
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Ensure `extra_kwargs` are passed to generated fields.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'char_field')
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extra_kwargs = {'char_field': {'default': 'extra'}}
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=True)
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char_field = CharField(default='extra', max_length=100)
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_extra_field_kwargs_required(self):
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"""
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Ensure `extra_kwargs` are passed to generated fields.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'char_field')
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extra_kwargs = {'auto_field': {'required': False, 'read_only': False}}
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expected = dedent("""
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TestSerializer():
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auto_field = IntegerField(read_only=False, required=False)
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char_field = CharField(max_length=100)
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_invalid_field(self):
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"""
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Field names that do not map to a model field or relationship should
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raise a configuration errror.
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"""
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field', 'invalid')
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expected = 'Field name `invalid` is not valid for model `RegularFieldsModel`.'
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with self.assertRaisesMessage(ImproperlyConfigured, expected):
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TestSerializer().fields
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def test_missing_field(self):
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"""
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Fields that have been declared on the serializer class must be included
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in the `Meta.fields` if it exists.
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"""
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class TestSerializer(serializers.ModelSerializer):
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missing = serializers.ReadOnlyField()
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field',)
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expected = (
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"The field 'missing' was declared on serializer TestSerializer, "
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"but has not been included in the 'fields' option."
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)
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with self.assertRaisesMessage(AssertionError, expected):
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TestSerializer().fields
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def test_missing_superclass_field(self):
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"""
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Fields that have been declared on a parent of the serializer class may
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be excluded from the `Meta.fields` option.
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"""
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class TestSerializer(serializers.ModelSerializer):
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missing = serializers.ReadOnlyField()
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class ChildSerializer(TestSerializer):
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class Meta:
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model = RegularFieldsModel
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fields = ('auto_field',)
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ChildSerializer().fields
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def test_choices_with_nonstandard_args(self):
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class ExampleSerializer(serializers.ModelSerializer):
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class Meta:
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model = ChoicesModel
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fields = '__all__'
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ExampleSerializer()
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class TestDurationFieldMapping(TestCase):
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def test_duration_field(self):
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class DurationFieldModel(models.Model):
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"""
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A model that defines DurationField.
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"""
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duration_field = models.DurationField()
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = DurationFieldModel
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fields = '__all__'
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expected = dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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duration_field = DurationField()
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_duration_field_with_validators(self):
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class ValidatedDurationFieldModel(models.Model):
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"""
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A model that defines DurationField with validators.
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"""
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duration_field = models.DurationField(
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validators=[MinValueValidator(datetime.timedelta(days=1)), MaxValueValidator(datetime.timedelta(days=3))]
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)
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = ValidatedDurationFieldModel
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fields = '__all__'
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expected = dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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duration_field = DurationField(max_value=datetime.timedelta(3), min_value=datetime.timedelta(1))
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""") if sys.version_info < (3, 7) else dedent("""
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TestSerializer():
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id = IntegerField(label='ID', read_only=True)
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duration_field = DurationField(max_value=datetime.timedelta(days=3), min_value=datetime.timedelta(days=1))
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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class TestGenericIPAddressFieldValidation(TestCase):
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def test_ip_address_validation(self):
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class IPAddressFieldModel(models.Model):
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address = models.GenericIPAddressField()
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = IPAddressFieldModel
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fields = '__all__'
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s = TestSerializer(data={'address': 'not an ip address'})
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self.assertFalse(s.is_valid())
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self.assertEqual(1, len(s.errors['address']),
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'Unexpected number of validation errors: '
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'{}'.format(s.errors))
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@pytest.mark.skipif('not postgres_fields')
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class TestPosgresFieldsMapping(TestCase):
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def test_hstore_field(self):
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class HStoreFieldModel(models.Model):
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hstore_field = postgres_fields.HStoreField()
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = HStoreFieldModel
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fields = ['hstore_field']
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expected = dedent("""
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TestSerializer():
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hstore_field = HStoreField()
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_array_field(self):
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class ArrayFieldModel(models.Model):
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array_field = postgres_fields.ArrayField(base_field=models.CharField())
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = ArrayFieldModel
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fields = ['array_field']
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expected = dedent("""
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TestSerializer():
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array_field = ListField(child=CharField(label='Array field', validators=[<django.core.validators.MaxLengthValidator object>]))
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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def test_json_field(self):
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class JSONFieldModel(models.Model):
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json_field = postgres_fields.JSONField()
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json_field_with_encoder = postgres_fields.JSONField(encoder=DjangoJSONEncoder)
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class TestSerializer(serializers.ModelSerializer):
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class Meta:
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model = JSONFieldModel
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fields = ['json_field', 'json_field_with_encoder']
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expected = dedent("""
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TestSerializer():
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json_field = JSONField(encoder=None, style={'base_template': 'textarea.html'})
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json_field_with_encoder = JSONField(encoder=<class 'django.core.serializers.json.DjangoJSONEncoder'>, style={'base_template': 'textarea.html'})
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""")
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self.assertEqual(repr(TestSerializer()), expected)
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# Tests for relational field mappings.
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# ------------------------------------
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class ForeignKeyTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class ManyToManyTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class OneToOneTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class ThroughTargetModel(models.Model):
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name = models.CharField(max_length=100)
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class Supplementary(models.Model):
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extra = models.IntegerField()
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forwards = models.ForeignKey('ThroughTargetModel', on_delete=models.CASCADE)
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backwards = models.ForeignKey('RelationalModel', on_delete=models.CASCADE)
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class RelationalModel(models.Model):
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foreign_key = models.ForeignKey(ForeignKeyTargetModel, related_name='reverse_foreign_key', on_delete=models.CASCADE)
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many_to_many = models.ManyToManyField(ManyToManyTargetModel, related_name='reverse_many_to_many')
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one_to_one = models.OneToOneField(OneToOneTargetModel, related_name='reverse_one_to_one', on_delete=models.CASCADE)
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through = models.ManyToManyField(ThroughTargetModel, through=Supplementary, related_name='reverse_through')
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class UniqueTogetherModel(models.Model):
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foreign_key = models.ForeignKey(ForeignKeyTargetModel, related_name='unique_foreign_key', on_delete=models.CASCADE)
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one_to_one = models.OneToOneField(OneToOneTargetModel, related_name='unique_one_to_one', on_delete=models.CASCADE)
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class Meta:
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unique_together = ("foreign_key", "one_to_one")
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class TestRelationalFieldMappings(TestCase):
|
|
def test_pk_relations(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
fields = '__all__'
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
foreign_key = PrimaryKeyRelatedField(queryset=ForeignKeyTargetModel.objects.all())
|
|
one_to_one = PrimaryKeyRelatedField(queryset=OneToOneTargetModel.objects.all(), validators=[<UniqueValidator(queryset=RelationalModel.objects.all())>])
|
|
many_to_many = PrimaryKeyRelatedField(allow_empty=False, many=True, queryset=ManyToManyTargetModel.objects.all())
|
|
through = PrimaryKeyRelatedField(many=True, read_only=True)
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_nested_relations(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
depth = 1
|
|
fields = '__all__'
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
foreign_key = NestedSerializer(read_only=True):
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
one_to_one = NestedSerializer(read_only=True):
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
many_to_many = NestedSerializer(many=True, read_only=True):
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
through = NestedSerializer(many=True, read_only=True):
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_hyperlinked_relations(self):
|
|
class TestSerializer(serializers.HyperlinkedModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
fields = '__all__'
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
url = HyperlinkedIdentityField(view_name='relationalmodel-detail')
|
|
foreign_key = HyperlinkedRelatedField(queryset=ForeignKeyTargetModel.objects.all(), view_name='foreignkeytargetmodel-detail')
|
|
one_to_one = HyperlinkedRelatedField(queryset=OneToOneTargetModel.objects.all(), validators=[<UniqueValidator(queryset=RelationalModel.objects.all())>], view_name='onetoonetargetmodel-detail')
|
|
many_to_many = HyperlinkedRelatedField(allow_empty=False, many=True, queryset=ManyToManyTargetModel.objects.all(), view_name='manytomanytargetmodel-detail')
|
|
through = HyperlinkedRelatedField(many=True, read_only=True, view_name='throughtargetmodel-detail')
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_nested_hyperlinked_relations(self):
|
|
class TestSerializer(serializers.HyperlinkedModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
depth = 1
|
|
fields = '__all__'
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
url = HyperlinkedIdentityField(view_name='relationalmodel-detail')
|
|
foreign_key = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='foreignkeytargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
one_to_one = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='onetoonetargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
many_to_many = NestedSerializer(many=True, read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='manytomanytargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
through = NestedSerializer(many=True, read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='throughtargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_nested_hyperlinked_relations_starred_source(self):
|
|
class TestSerializer(serializers.HyperlinkedModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
depth = 1
|
|
fields = '__all__'
|
|
|
|
extra_kwargs = {
|
|
'url': {
|
|
'source': '*',
|
|
}}
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
url = HyperlinkedIdentityField(source='*', view_name='relationalmodel-detail')
|
|
foreign_key = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='foreignkeytargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
one_to_one = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='onetoonetargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
many_to_many = NestedSerializer(many=True, read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='manytomanytargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
through = NestedSerializer(many=True, read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='throughtargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
""")
|
|
self.maxDiff = None
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_nested_unique_together_relations(self):
|
|
class TestSerializer(serializers.HyperlinkedModelSerializer):
|
|
class Meta:
|
|
model = UniqueTogetherModel
|
|
depth = 1
|
|
fields = '__all__'
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
url = HyperlinkedIdentityField(view_name='uniquetogethermodel-detail')
|
|
foreign_key = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='foreignkeytargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
one_to_one = NestedSerializer(read_only=True):
|
|
url = HyperlinkedIdentityField(view_name='onetoonetargetmodel-detail')
|
|
name = CharField(max_length=100)
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_foreign_key(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = ForeignKeyTargetModel
|
|
fields = ('id', 'name', 'reverse_foreign_key')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_foreign_key = PrimaryKeyRelatedField(many=True, queryset=RelationalModel.objects.all())
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_one_to_one(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = OneToOneTargetModel
|
|
fields = ('id', 'name', 'reverse_one_to_one')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_one_to_one = PrimaryKeyRelatedField(queryset=RelationalModel.objects.all())
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_many_to_many(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = ManyToManyTargetModel
|
|
fields = ('id', 'name', 'reverse_many_to_many')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_many_to_many = PrimaryKeyRelatedField(many=True, queryset=RelationalModel.objects.all())
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
def test_pk_reverse_through(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = ThroughTargetModel
|
|
fields = ('id', 'name', 'reverse_through')
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
name = CharField(max_length=100)
|
|
reverse_through = PrimaryKeyRelatedField(many=True, read_only=True)
|
|
""")
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
|
|
class DisplayValueTargetModel(models.Model):
|
|
name = models.CharField(max_length=100)
|
|
|
|
def __str__(self):
|
|
return '%s Color' % (self.name)
|
|
|
|
|
|
class DisplayValueModel(models.Model):
|
|
color = models.ForeignKey(DisplayValueTargetModel, on_delete=models.CASCADE)
|
|
|
|
|
|
class TestRelationalFieldDisplayValue(TestCase):
|
|
def setUp(self):
|
|
DisplayValueTargetModel.objects.bulk_create([
|
|
DisplayValueTargetModel(name='Red'),
|
|
DisplayValueTargetModel(name='Yellow'),
|
|
DisplayValueTargetModel(name='Green'),
|
|
])
|
|
|
|
def test_default_display_value(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = DisplayValueModel
|
|
fields = '__all__'
|
|
|
|
serializer = TestSerializer()
|
|
expected = OrderedDict([(1, 'Red Color'), (2, 'Yellow Color'), (3, 'Green Color')])
|
|
self.assertEqual(serializer.fields['color'].choices, expected)
|
|
|
|
def test_custom_display_value(self):
|
|
class TestField(serializers.PrimaryKeyRelatedField):
|
|
def display_value(self, instance):
|
|
return 'My %s Color' % (instance.name)
|
|
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
color = TestField(queryset=DisplayValueTargetModel.objects.all())
|
|
|
|
class Meta:
|
|
model = DisplayValueModel
|
|
fields = '__all__'
|
|
|
|
serializer = TestSerializer()
|
|
expected = OrderedDict([(1, 'My Red Color'), (2, 'My Yellow Color'), (3, 'My Green Color')])
|
|
self.assertEqual(serializer.fields['color'].choices, expected)
|
|
|
|
|
|
class TestIntegration(TestCase):
|
|
def setUp(self):
|
|
self.foreign_key_target = ForeignKeyTargetModel.objects.create(
|
|
name='foreign_key'
|
|
)
|
|
self.one_to_one_target = OneToOneTargetModel.objects.create(
|
|
name='one_to_one'
|
|
)
|
|
self.many_to_many_targets = [
|
|
ManyToManyTargetModel.objects.create(
|
|
name='many_to_many (%d)' % idx
|
|
) for idx in range(3)
|
|
]
|
|
self.instance = RelationalModel.objects.create(
|
|
foreign_key=self.foreign_key_target,
|
|
one_to_one=self.one_to_one_target,
|
|
)
|
|
self.instance.many_to_many.set(self.many_to_many_targets)
|
|
|
|
def test_pk_retrival(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
fields = '__all__'
|
|
|
|
serializer = TestSerializer(self.instance)
|
|
expected = {
|
|
'id': self.instance.pk,
|
|
'foreign_key': self.foreign_key_target.pk,
|
|
'one_to_one': self.one_to_one_target.pk,
|
|
'many_to_many': [item.pk for item in self.many_to_many_targets],
|
|
'through': []
|
|
}
|
|
self.assertEqual(serializer.data, expected)
|
|
|
|
def test_pk_create(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
fields = '__all__'
|
|
|
|
new_foreign_key = ForeignKeyTargetModel.objects.create(
|
|
name='foreign_key'
|
|
)
|
|
new_one_to_one = OneToOneTargetModel.objects.create(
|
|
name='one_to_one'
|
|
)
|
|
new_many_to_many = [
|
|
ManyToManyTargetModel.objects.create(
|
|
name='new many_to_many (%d)' % idx
|
|
) for idx in range(3)
|
|
]
|
|
data = {
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
}
|
|
|
|
# Serializer should validate okay.
|
|
serializer = TestSerializer(data=data)
|
|
assert serializer.is_valid()
|
|
|
|
# Creating the instance, relationship attributes should be set.
|
|
instance = serializer.save()
|
|
assert instance.foreign_key.pk == new_foreign_key.pk
|
|
assert instance.one_to_one.pk == new_one_to_one.pk
|
|
assert [
|
|
item.pk for item in instance.many_to_many.all()
|
|
] == [
|
|
item.pk for item in new_many_to_many
|
|
]
|
|
assert list(instance.through.all()) == []
|
|
|
|
# Representation should be correct.
|
|
expected = {
|
|
'id': instance.pk,
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
'through': []
|
|
}
|
|
self.assertEqual(serializer.data, expected)
|
|
|
|
def test_pk_update(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = RelationalModel
|
|
fields = '__all__'
|
|
|
|
new_foreign_key = ForeignKeyTargetModel.objects.create(
|
|
name='foreign_key'
|
|
)
|
|
new_one_to_one = OneToOneTargetModel.objects.create(
|
|
name='one_to_one'
|
|
)
|
|
new_many_to_many = [
|
|
ManyToManyTargetModel.objects.create(
|
|
name='new many_to_many (%d)' % idx
|
|
) for idx in range(3)
|
|
]
|
|
data = {
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
}
|
|
|
|
# Serializer should validate okay.
|
|
serializer = TestSerializer(self.instance, data=data)
|
|
assert serializer.is_valid()
|
|
|
|
# Creating the instance, relationship attributes should be set.
|
|
instance = serializer.save()
|
|
assert instance.foreign_key.pk == new_foreign_key.pk
|
|
assert instance.one_to_one.pk == new_one_to_one.pk
|
|
assert [
|
|
item.pk for item in instance.many_to_many.all()
|
|
] == [
|
|
item.pk for item in new_many_to_many
|
|
]
|
|
assert list(instance.through.all()) == []
|
|
|
|
# Representation should be correct.
|
|
expected = {
|
|
'id': self.instance.pk,
|
|
'foreign_key': new_foreign_key.pk,
|
|
'one_to_one': new_one_to_one.pk,
|
|
'many_to_many': [item.pk for item in new_many_to_many],
|
|
'through': []
|
|
}
|
|
self.assertEqual(serializer.data, expected)
|
|
|
|
|
|
# Tests for bulk create using `ListSerializer`.
|
|
|
|
class BulkCreateModel(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
|
|
|
|
class TestBulkCreate(TestCase):
|
|
def test_bulk_create(self):
|
|
class BasicModelSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = BulkCreateModel
|
|
fields = ('name',)
|
|
|
|
class BulkCreateSerializer(serializers.ListSerializer):
|
|
child = BasicModelSerializer()
|
|
|
|
data = [{'name': 'a'}, {'name': 'b'}, {'name': 'c'}]
|
|
serializer = BulkCreateSerializer(data=data)
|
|
assert serializer.is_valid()
|
|
|
|
# Objects are returned by save().
|
|
instances = serializer.save()
|
|
assert len(instances) == 3
|
|
assert [item.name for item in instances] == ['a', 'b', 'c']
|
|
|
|
# Objects have been created in the database.
|
|
assert BulkCreateModel.objects.count() == 3
|
|
assert list(BulkCreateModel.objects.values_list('name', flat=True)) == ['a', 'b', 'c']
|
|
|
|
# Serializer returns correct data.
|
|
assert serializer.data == data
|
|
|
|
|
|
class MetaClassTestModel(models.Model):
|
|
text = models.CharField(max_length=100)
|
|
|
|
|
|
class TestSerializerMetaClass(TestCase):
|
|
def test_meta_class_fields_option(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = MetaClassTestModel
|
|
fields = 'text'
|
|
|
|
msginitial = "The `fields` option must be a list or tuple"
|
|
with self.assertRaisesMessage(TypeError, msginitial):
|
|
ExampleSerializer().fields
|
|
|
|
def test_meta_class_exclude_option(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = MetaClassTestModel
|
|
exclude = 'text'
|
|
|
|
msginitial = "The `exclude` option must be a list or tuple"
|
|
with self.assertRaisesMessage(TypeError, msginitial):
|
|
ExampleSerializer().fields
|
|
|
|
def test_meta_class_fields_and_exclude_options(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = MetaClassTestModel
|
|
fields = ('text',)
|
|
exclude = ('text',)
|
|
|
|
msginitial = "Cannot set both 'fields' and 'exclude' options on serializer ExampleSerializer."
|
|
with self.assertRaisesMessage(AssertionError, msginitial):
|
|
ExampleSerializer().fields
|
|
|
|
def test_declared_fields_with_exclude_option(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
text = serializers.CharField()
|
|
|
|
class Meta:
|
|
model = MetaClassTestModel
|
|
exclude = ('text',)
|
|
|
|
expected = (
|
|
"Cannot both declare the field 'text' and include it in the "
|
|
"ExampleSerializer 'exclude' option. Remove the field or, if "
|
|
"inherited from a parent serializer, disable with `text = None`."
|
|
)
|
|
with self.assertRaisesMessage(AssertionError, expected):
|
|
ExampleSerializer().fields
|
|
|
|
|
|
class Issue2704TestCase(TestCase):
|
|
def test_queryset_all(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
additional_attr = serializers.CharField()
|
|
|
|
class Meta:
|
|
model = OneFieldModel
|
|
fields = ('char_field', 'additional_attr')
|
|
|
|
OneFieldModel.objects.create(char_field='abc')
|
|
qs = OneFieldModel.objects.all()
|
|
|
|
for o in qs:
|
|
o.additional_attr = '123'
|
|
|
|
serializer = TestSerializer(instance=qs, many=True)
|
|
|
|
expected = [{
|
|
'char_field': 'abc',
|
|
'additional_attr': '123',
|
|
}]
|
|
|
|
assert serializer.data == expected
|
|
|
|
|
|
class DecimalFieldModel(models.Model):
|
|
decimal_field = models.DecimalField(
|
|
max_digits=3,
|
|
decimal_places=1,
|
|
validators=[MinValueValidator(1), MaxValueValidator(3)]
|
|
)
|
|
|
|
|
|
class TestDecimalFieldMappings(TestCase):
|
|
def test_decimal_field_has_decimal_validator(self):
|
|
"""
|
|
Test that a `DecimalField` has no `DecimalValidator`.
|
|
"""
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = DecimalFieldModel
|
|
fields = '__all__'
|
|
|
|
serializer = TestSerializer()
|
|
|
|
assert len(serializer.fields['decimal_field'].validators) == 2
|
|
|
|
def test_min_value_is_passed(self):
|
|
"""
|
|
Test that the `MinValueValidator` is converted to the `min_value`
|
|
argument for the field.
|
|
"""
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = DecimalFieldModel
|
|
fields = '__all__'
|
|
|
|
serializer = TestSerializer()
|
|
|
|
assert serializer.fields['decimal_field'].min_value == 1
|
|
|
|
def test_max_value_is_passed(self):
|
|
"""
|
|
Test that the `MaxValueValidator` is converted to the `max_value`
|
|
argument for the field.
|
|
"""
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = DecimalFieldModel
|
|
fields = '__all__'
|
|
|
|
serializer = TestSerializer()
|
|
|
|
assert serializer.fields['decimal_field'].max_value == 3
|
|
|
|
|
|
class TestMetaInheritance(TestCase):
|
|
def test_extra_kwargs_not_altered(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
non_model_field = serializers.CharField()
|
|
|
|
class Meta:
|
|
model = OneFieldModel
|
|
read_only_fields = ('char_field', 'non_model_field')
|
|
fields = read_only_fields
|
|
extra_kwargs = {}
|
|
|
|
class ChildSerializer(TestSerializer):
|
|
class Meta(TestSerializer.Meta):
|
|
read_only_fields = ()
|
|
|
|
test_expected = dedent("""
|
|
TestSerializer():
|
|
char_field = CharField(read_only=True)
|
|
non_model_field = CharField()
|
|
""")
|
|
|
|
child_expected = dedent("""
|
|
ChildSerializer():
|
|
char_field = CharField(max_length=100)
|
|
non_model_field = CharField()
|
|
""")
|
|
self.assertEqual(repr(ChildSerializer()), child_expected)
|
|
self.assertEqual(repr(TestSerializer()), test_expected)
|
|
self.assertEqual(repr(ChildSerializer()), child_expected)
|
|
|
|
|
|
class OneToOneTargetTestModel(models.Model):
|
|
text = models.CharField(max_length=100)
|
|
|
|
|
|
class OneToOneSourceTestModel(models.Model):
|
|
target = models.OneToOneField(OneToOneTargetTestModel, primary_key=True, on_delete=models.CASCADE)
|
|
|
|
|
|
class TestModelFieldValues(TestCase):
|
|
def test_model_field(self):
|
|
class ExampleSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = OneToOneSourceTestModel
|
|
fields = ('target',)
|
|
|
|
target = OneToOneTargetTestModel(id=1, text='abc')
|
|
source = OneToOneSourceTestModel(target=target)
|
|
serializer = ExampleSerializer(source)
|
|
self.assertEqual(serializer.data, {'target': 1})
|
|
|
|
|
|
class TestUniquenessOverride(TestCase):
|
|
def test_required_not_overwritten(self):
|
|
class TestModel(models.Model):
|
|
field_1 = models.IntegerField(null=True)
|
|
field_2 = models.IntegerField()
|
|
|
|
class Meta:
|
|
unique_together = (('field_1', 'field_2'),)
|
|
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = TestModel
|
|
fields = '__all__'
|
|
extra_kwargs = {'field_1': {'required': False}}
|
|
|
|
fields = TestSerializer().fields
|
|
self.assertFalse(fields['field_1'].required)
|
|
self.assertTrue(fields['field_2'].required)
|
|
|
|
|
|
class Issue3674Test(TestCase):
|
|
def test_nonPK_foreignkey_model_serializer(self):
|
|
class TestParentModel(models.Model):
|
|
title = models.CharField(max_length=64)
|
|
|
|
class TestChildModel(models.Model):
|
|
parent = models.ForeignKey(TestParentModel, related_name='children', on_delete=models.CASCADE)
|
|
value = models.CharField(primary_key=True, max_length=64)
|
|
|
|
class TestChildModelSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = TestChildModel
|
|
fields = ('value', 'parent')
|
|
|
|
class TestParentModelSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = TestParentModel
|
|
fields = ('id', 'title', 'children')
|
|
|
|
parent_expected = dedent("""
|
|
TestParentModelSerializer():
|
|
id = IntegerField(label='ID', read_only=True)
|
|
title = CharField(max_length=64)
|
|
children = PrimaryKeyRelatedField(many=True, queryset=TestChildModel.objects.all())
|
|
""")
|
|
self.assertEqual(repr(TestParentModelSerializer()), parent_expected)
|
|
|
|
child_expected = dedent("""
|
|
TestChildModelSerializer():
|
|
value = CharField(max_length=64, validators=[<UniqueValidator(queryset=TestChildModel.objects.all())>])
|
|
parent = PrimaryKeyRelatedField(queryset=TestParentModel.objects.all())
|
|
""")
|
|
self.assertEqual(repr(TestChildModelSerializer()), child_expected)
|
|
|
|
def test_nonID_PK_foreignkey_model_serializer(self):
|
|
|
|
class TestChildModelSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = Issue3674ChildModel
|
|
fields = ('value', 'parent')
|
|
|
|
class TestParentModelSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = Issue3674ParentModel
|
|
fields = ('id', 'title', 'children')
|
|
|
|
parent = Issue3674ParentModel.objects.create(title='abc')
|
|
child = Issue3674ChildModel.objects.create(value='def', parent=parent)
|
|
|
|
parent_serializer = TestParentModelSerializer(parent)
|
|
child_serializer = TestChildModelSerializer(child)
|
|
|
|
parent_expected = {'children': ['def'], 'id': 1, 'title': 'abc'}
|
|
self.assertEqual(parent_serializer.data, parent_expected)
|
|
|
|
child_expected = {'parent': 1, 'value': 'def'}
|
|
self.assertEqual(child_serializer.data, child_expected)
|
|
|
|
|
|
class Issue4897TestCase(TestCase):
|
|
def test_should_assert_if_writing_readonly_fields(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = OneFieldModel
|
|
fields = ('char_field',)
|
|
readonly_fields = fields
|
|
|
|
obj = OneFieldModel.objects.create(char_field='abc')
|
|
|
|
with pytest.raises(AssertionError) as cm:
|
|
TestSerializer(obj).fields
|
|
cm.match(r'readonly_fields')
|
|
|
|
|
|
class Test5004UniqueChoiceField(TestCase):
|
|
def test_unique_choice_field(self):
|
|
class TestUniqueChoiceSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = UniqueChoiceModel
|
|
fields = '__all__'
|
|
|
|
UniqueChoiceModel.objects.create(name='choice1')
|
|
serializer = TestUniqueChoiceSerializer(data={'name': 'choice1'})
|
|
assert not serializer.is_valid()
|
|
assert serializer.errors == {'name': ['unique choice model with this name already exists.']}
|
|
|
|
|
|
class TestFieldSource(TestCase):
|
|
def test_traverse_nullable_fk(self):
|
|
"""
|
|
A dotted source with nullable elements uses default when any item in the chain is None. #5849.
|
|
|
|
Similar to model example from test_serializer.py `test_default_for_multiple_dotted_source` method,
|
|
but using RelatedField, rather than CharField.
|
|
"""
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
target = serializers.PrimaryKeyRelatedField(
|
|
source='target.target', read_only=True, allow_null=True, default=None
|
|
)
|
|
|
|
class Meta:
|
|
model = NestedForeignKeySource
|
|
fields = ('target', )
|
|
|
|
model = NestedForeignKeySource.objects.create()
|
|
assert TestSerializer(model).data['target'] is None
|
|
|
|
def test_named_field_source(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
|
|
class Meta:
|
|
model = RegularFieldsModel
|
|
fields = ('number_field',)
|
|
extra_kwargs = {
|
|
'number_field': {
|
|
'source': 'integer_field'
|
|
}
|
|
}
|
|
|
|
expected = dedent("""
|
|
TestSerializer():
|
|
number_field = IntegerField(source='integer_field')
|
|
""")
|
|
self.maxDiff = None
|
|
self.assertEqual(repr(TestSerializer()), expected)
|
|
|
|
|
|
class Issue6110TestModel(models.Model):
|
|
"""Model without .objects manager."""
|
|
|
|
name = models.CharField(max_length=64)
|
|
all_objects = models.Manager()
|
|
|
|
|
|
class Issue6110ModelSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = Issue6110TestModel
|
|
fields = ('name',)
|
|
|
|
|
|
class Issue6110Test(TestCase):
|
|
def test_model_serializer_custom_manager(self):
|
|
instance = Issue6110ModelSerializer().create({'name': 'test_name'})
|
|
self.assertEqual(instance.name, 'test_name')
|
|
|
|
def test_model_serializer_custom_manager_error_message(self):
|
|
msginitial = ('Got a `TypeError` when calling `Issue6110TestModel.all_objects.create()`.')
|
|
with self.assertRaisesMessage(TypeError, msginitial):
|
|
Issue6110ModelSerializer().create({'wrong_param': 'wrong_param'})
|
|
|
|
|
|
class Issue6751Model(models.Model):
|
|
many_to_many = models.ManyToManyField(ManyToManyTargetModel, related_name='+')
|
|
char_field = models.CharField(max_length=100)
|
|
char_field2 = models.CharField(max_length=100)
|
|
|
|
|
|
@receiver(m2m_changed, sender=Issue6751Model.many_to_many.through)
|
|
def process_issue6751model_m2m_changed(action, instance, **_):
|
|
if action == 'post_add':
|
|
instance.char_field = 'value changed by signal'
|
|
instance.save()
|
|
|
|
|
|
class Issue6751Test(TestCase):
|
|
def test_model_serializer_save_m2m_after_instance(self):
|
|
class TestSerializer(serializers.ModelSerializer):
|
|
class Meta:
|
|
model = Issue6751Model
|
|
fields = (
|
|
'many_to_many',
|
|
'char_field',
|
|
)
|
|
|
|
instance = Issue6751Model.objects.create(char_field='initial value')
|
|
m2m_target = ManyToManyTargetModel.objects.create(name='target')
|
|
|
|
serializer = TestSerializer(
|
|
instance=instance,
|
|
data={
|
|
'many_to_many': (m2m_target.id,),
|
|
'char_field': 'will be changed by signal',
|
|
}
|
|
)
|
|
|
|
serializer.is_valid()
|
|
serializer.save()
|
|
|
|
self.assertEqual(instance.char_field, 'value changed by signal')
|