Python serializers.sort_dependencies方法代码示例

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def serialize_db_to_string(self):
        """
        Serializes all data in the database into a JSON string.
        Designed only for test runner usage; will not handle large
        amounts of data.
        """
        # Build list of all apps to serialize
        from django.db.migrations.loader import MigrationLoader
        loader = MigrationLoader(self.connection)
        app_list = []
        for app_config in apps.get_app_configs():
            if (
                app_config.models_module is not None and
                app_config.label in loader.migrated_apps and
                app_config.name not in settings.TEST_NON_SERIALIZED_APPS
            ):
                app_list.append((app_config, None))

        # Make a function to iteratively return every object
        def get_objects():
            for model in serializers.sort_dependencies(app_list):
                if (not model._meta.proxy and model._meta.managed and
                        router.allow_migrate_model(self.connection.alias, model)):
                    queryset = model._default_manager.using(self.connection.alias).order_by(model._meta.pk.name)
                    for obj in queryset.iterator():
                        yield obj
        # Serialize to a string
        out = StringIO()
        serializers.serialize("json", get_objects(), indent=None, stream=out)
        return out.getvalue() 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def serialize_db_to_string(self):
        """
        Serialize all data in the database into a JSON string.
        Designed only for test runner usage; will not handle large
        amounts of data.
        """
        # Build list of all apps to serialize
        from django.db.migrations.loader import MigrationLoader
        loader = MigrationLoader(self.connection)
        app_list = []
        for app_config in apps.get_app_configs():
            if (
                app_config.models_module is not None and
                app_config.label in loader.migrated_apps and
                app_config.name not in settings.TEST_NON_SERIALIZED_APPS
            ):
                app_list.append((app_config, None))

        # Make a function to iteratively return every object
        def get_objects():
            for model in serializers.sort_dependencies(app_list):
                if (model._meta.can_migrate(self.connection) and
                        router.allow_migrate_model(self.connection.alias, model)):
                    queryset = model._default_manager.using(self.connection.alias).order_by(model._meta.pk.name)
                    yield from queryset.iterator()
        # Serialize to a string
        out = StringIO()
        serializers.serialize("json", get_objects(), indent=None, stream=out)
        return out.getvalue() 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def serialize_db_to_string(self):
        """
        Serializes all data in the database into a JSON string.
        Designed only for test runner usage; will not handle large
        amounts of data.
        """
        # Build list of all apps to serialize
        from django.db.migrations.loader import MigrationLoader
        loader = MigrationLoader(self.connection)
        app_list = []
        for app_config in apps.get_app_configs():
            if (
                app_config.models_module is not None and
                app_config.label in loader.migrated_apps and
                app_config.name not in settings.TEST_NON_SERIALIZED_APPS
            ):
                app_list.append((app_config, None))

        # Make a function to iteratively return every object
        def get_objects():
            for model in serializers.sort_dependencies(app_list):
                if (model._meta.can_migrate(self.connection) and
                        router.allow_migrate_model(self.connection.alias, model)):
                    queryset = model._default_manager.using(self.connection.alias).order_by(model._meta.pk.name)
                    for obj in queryset.iterator():
                        yield obj
        # Serialize to a string
        out = StringIO()
        serializers.serialize("json", get_objects(), indent=None, stream=out)
        return out.getvalue() 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting(self):
        """
        It doesn't matter what order you mention the models,  Store *must* be
        serialized before then Person, and both must be serialized before Book.
        """
        sorted_deps = serializers.sort_dependencies(
            [('fixtures_regress', [Book, Person, Store])]
        )
        self.assertEqual(
            sorted_deps,
            [Store, Person, Book]
        ) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_2(self):
        sorted_deps = serializers.sort_dependencies(
            [('fixtures_regress', [Book, Store, Person])]
        )
        self.assertEqual(
            sorted_deps,
            [Store, Person, Book]
        ) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_3(self):
        sorted_deps = serializers.sort_dependencies(
            [('fixtures_regress', [Store, Book, Person])]
        )
        self.assertEqual(
            sorted_deps,
            [Store, Person, Book]
        ) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_4(self):
        sorted_deps = serializers.sort_dependencies(
            [('fixtures_regress', [Store, Person, Book])]
        )
        self.assertEqual(
            sorted_deps,
            [Store, Person, Book]
        ) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_5(self):
        sorted_deps = serializers.sort_dependencies(
            [('fixtures_regress', [Person, Book, Store])]
        )
        self.assertEqual(
            sorted_deps,
            [Store, Person, Book]
        ) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_dangling(self):
        sorted_deps = serializers.sort_dependencies(
            [('fixtures_regress', [Person, Circle1, Store, Book])]
        )
        self.assertEqual(
            sorted_deps,
            [Circle1, Store, Person, Book]
        ) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_tight_circular(self):
        with self.assertRaisesMessage(
            RuntimeError,
            "Can't resolve dependencies for fixtures_regress.Circle1, "
            "fixtures_regress.Circle2 in serialized app list."
        ):
            serializers.sort_dependencies([('fixtures_regress', [Person, Circle2, Circle1, Store, Book])]) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_tight_circular_2(self):
        with self.assertRaisesMessage(
            RuntimeError,
            "Can't resolve dependencies for fixtures_regress.Circle1, "
            "fixtures_regress.Circle2 in serialized app list."
        ):
            serializers.sort_dependencies([('fixtures_regress', [Circle1, Book, Circle2])]) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_self_referential(self):
        with self.assertRaisesMessage(
            RuntimeError,
            "Can't resolve dependencies for fixtures_regress.Circle3 in "
            "serialized app list."
        ):
            serializers.sort_dependencies([('fixtures_regress', [Book, Circle3])]) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_long(self):
        with self.assertRaisesMessage(
            RuntimeError,
            "Can't resolve dependencies for fixtures_regress.Circle1, "
            "fixtures_regress.Circle2, fixtures_regress.Circle3 in serialized "
            "app list."
        ):
            serializers.sort_dependencies([('fixtures_regress', [Person, Circle2, Circle1, Circle3, Store, Book])]) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_m2m_simple(self):
        """
        M2M relations without explicit through models SHOULD count as dependencies

        Regression test for bugs that could be caused by flawed fixes to
        #14226, namely if M2M checks are removed from sort_dependencies
        altogether.
        """
        sorted_deps = serializers.sort_dependencies(
            [('fixtures_regress', [M2MSimpleA, M2MSimpleB])]
        )
        self.assertEqual(sorted_deps, [M2MSimpleB, M2MSimpleA]) 

# 需要导入模块: from django.core import serializers [as 别名]
# 或者: from django.core.serializers import sort_dependencies [as 别名]
def test_dependency_sorting_m2m_simple_circular(self):
        """
        Resolving circular M2M relations without explicit through models should
        fail loudly
        """
        with self.assertRaisesMessage(
            RuntimeError,
            "Can't resolve dependencies for fixtures_regress.M2MSimpleCircularA, "
            "fixtures_regress.M2MSimpleCircularB in serialized app list."
        ):
            serializers.sort_dependencies([('fixtures_regress', [M2MSimpleCircularA, M2MSimpleCircularB])])