Python Place.save_base方法代码示例

# 需要导入模块: from models import Place [as 别名]
# 或者: from models.Place import save_base [as 别名]
    def test_issue_7276(self):
        # Regression test for #7276: calling delete() on a model with
        # multi-table inheritance should delete the associated rows from any
        # ancestor tables, as well as any descendent objects.
        place1 = Place(
            name="Guido's House of Pasta",
            address='944 W. Fullerton')
        place1.save_base(raw=True)
        restaurant = Restaurant(
            place_ptr=place1,
            serves_hot_dogs=True,
            serves_pizza=False)
        restaurant.save_base(raw=True)
        italian_restaurant = ItalianRestaurant(
            restaurant_ptr=restaurant,
            serves_gnocchi=True)
        italian_restaurant.save_base(raw=True)

        ident = ItalianRestaurant.objects.all()[0].id
        self.assertEqual(Place.objects.get(pk=ident), place1)
        xx = Restaurant.objects.create(
            name='a',
            address='xx',
            serves_hot_dogs=True,
            serves_pizza=False)

        # This should delete both Restuarants, plus the related places, plus
        # the ItalianRestaurant.
        Restaurant.objects.all().delete()

        self.assertRaises(
            Place.DoesNotExist,
            Place.objects.get,
            pk=ident)
        self.assertRaises(
            ItalianRestaurant.DoesNotExist,
            ItalianRestaurant.objects.get,
            pk=ident)

# 需要导入模块: from models import Place [as 别名]
# 或者: from models.Place import save_base [as 别名]
    def test_model_inheritance(self):
        # Regression for #7350, #7202
        # Check that when you create a Parent object with a specific reference
        # to an existent child instance, saving the Parent doesn't duplicate
        # the child. This behaviour is only activated during a raw save - it
        # is mostly relevant to deserialization, but any sort of CORBA style
        # 'narrow()' API would require a similar approach.

        # Create a child-parent-grandparent chain
        place1 = Place(
            name="Guido's House of Pasta",
            address='944 W. Fullerton')
        place1.save_base(raw=True)
        restaurant = Restaurant(
            place_ptr=place1,
            serves_hot_dogs=True,
            serves_pizza=False)
        restaurant.save_base(raw=True)
        italian_restaurant = ItalianRestaurant(
            restaurant_ptr=restaurant,
            serves_gnocchi=True)
        italian_restaurant.save_base(raw=True)

        # Create a child-parent chain with an explicit parent link
        place2 = Place(name='Main St', address='111 Main St')
        place2.save_base(raw=True)
        park = ParkingLot(parent=place2, capacity=100)
        park.save_base(raw=True)

        # Check that no extra parent objects have been created.
        places = list(Place.objects.all())
        self.assertEqual(places, [place1, place2])

        dicts = list(Restaurant.objects.values('name','serves_hot_dogs'))
        self.assertEqual(dicts, [{
            'name': u"Guido's House of Pasta",
            'serves_hot_dogs': True
        }])

        dicts = list(ItalianRestaurant.objects.values(
            'name','serves_hot_dogs','serves_gnocchi'))
        self.assertEqual(dicts, [{
            'name': u"Guido's House of Pasta",
            'serves_gnocchi': True,
            'serves_hot_dogs': True,
        }])

        dicts = list(ParkingLot.objects.values('name','capacity'))
        self.assertEqual(dicts, [{
            'capacity': 100,
            'name': u'Main St',
        }])

        # You can also update objects when using a raw save.
        place1.name = "Guido's All New House of Pasta"
        place1.save_base(raw=True)

        restaurant.serves_hot_dogs = False
        restaurant.save_base(raw=True)

        italian_restaurant.serves_gnocchi = False
        italian_restaurant.save_base(raw=True)

        place2.name='Derelict lot'
        place2.save_base(raw=True)

        park.capacity = 50
        park.save_base(raw=True)

        # No extra parent objects after an update, either.
        places = list(Place.objects.all())
        self.assertEqual(places, [place2, place1])
        self.assertEqual(places[0].name, 'Derelict lot')
        self.assertEqual(places[1].name, "Guido's All New House of Pasta")

        dicts = list(Restaurant.objects.values('name','serves_hot_dogs'))
        self.assertEqual(dicts, [{
            'name': u"Guido's All New House of Pasta",
            'serves_hot_dogs': False,
        }])

        dicts = list(ItalianRestaurant.objects.values(
            'name', 'serves_hot_dogs', 'serves_gnocchi'))
        self.assertEqual(dicts, [{
            'name': u"Guido's All New House of Pasta",
            'serves_gnocchi': False,
            'serves_hot_dogs': False,
        }])

        dicts = list(ParkingLot.objects.values('name','capacity'))
        self.assertEqual(dicts, [{
            'capacity': 50,
            'name': u'Derelict lot',
        }])

        # If you try to raw_save a parent attribute onto a child object,
        # the attribute will be ignored.

        italian_restaurant.name = "Lorenzo's Pasta Hut"
        italian_restaurant.save_base(raw=True)
#.........这里部分代码省略.........