// Append
	toy := Toy{Name: "toy-has-one-append"}

	if err := DB.Model(&pet2).Association("Toy").Append(&toy); err != nil {
		t.Fatalf("Error happened when append toy, got %v", err)
	}

	if toy.ID == 0 {
		t.Fatalf("Toy's ID should be created")
	}

	pet.Toy = toy
	CheckPet(t, pet2, pet)

	AssertAssociationCount(t, pet, "Toy", 1, "AfterAppend")

	// Replace

	Active    bool
}

type Account struct {
	gorm.Model
	UserID sql.NullInt64
	Number string
}

type Pet struct {
	gorm.Model
	UserID *uint
	Name   string
	Toy    Toy `gorm:"polymorphic:Owner;"`
}

type Toy struct {
	gorm.Model
	Name      string
	OwnerID   string
	OwnerType string
}

type Tools struct {
	gorm.Model
	Name     string
	CustomID string
	Type     string
}

	AssertObjEqual(t, pet, expect, "ID", "CreatedAt", "UpdatedAt", "DeletedAt", "UserID", "Name")

	AssertObjEqual(t, pet.Toy, expect.Toy, "ID", "CreatedAt", "UpdatedAt", "DeletedAt", "Name", "OwnerID", "OwnerType")

	if expect.Toy.Name != "" && expect.Toy.OwnerType != "pets" {
		t.Errorf("toys's OwnerType, expect: %v, got %v", "pets", expect.Toy.OwnerType)
	}
}

func CheckUserUnscoped(t *testing.T, user User, expect User) {

		t.Errorf("Hamster's preferred toy failed to preload")
	}

	if hamster2.OtherToy.ID != hamster.OtherToy.ID || hamster2.OtherToy.Name != hamster.OtherToy.Name {
		t.Errorf("Hamster's other toy failed to preload")
	}

	// clear to omit Toy.ID in count
	hamster2.PreferredToy = Toy{}
	hamster2.OtherToy = Toy{}

	if DB.Model(&hamster2).Association("PreferredToy").Count() != 1 {

	user := *GetUser("nested_preload", Config{Pets: 1})
	pet := user.Pets[0]
	pet.Toy = Toy{Name: "toy_nested_preload_" + strconv.Itoa(1)}
	pet.Toy = Toy{Name: "toy_nested_preload_" + strconv.Itoa(2)}

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	var user2 User
	DB.Preload("Pets.Toy").Find(&user2, "id = ?", user.ID)
	CheckUser(t, user2, user)

	DB.Delete(&pet)

	toys := []Toy{{Name: "toy-has-many-append-1-1"}, {Name: "toy-has-many-append-1-1"}}

	if err := DB.Model(&user2).Association("Toys").Append(&toys); err != nil {
		t.Fatalf("Error happened when append toy, got %v", err)
	}

	for _, toy := range toys {
		toy := toy
		if toy.ID == 0 {
			t.Fatalf("Toy's ID should be created")
		}

		user.Toys = append(user.Toys, toy)
	}

				"Toy": {
					Name:        "Toy",
					Type:        schema.HasOne,
					Schema:      "User",
					FieldSchema: "Toy",
					Polymorphic: Polymorphic{ID: "OwnerID", Type: "OwnerType", Value: "users"},
					References: []Reference{
						{ForeignKey: "OwnerType", ForeignSchema: "Toy", PrimaryValue: "users"},
						{ForeignKey: "OwnerType", ForeignSchema: "Toy", PrimaryValue: "users"},
					},
				},

		pets := []Pet{{
			Name: "PolymorphicHasOne-Slice-1",
			Toy:  Toy{Name: "Toy-PolymorphicHasOne-Slice-1"},
		}, {
			Name: "PolymorphicHasOne-Slice-2",
			Toy:  Toy{Name: "Toy-PolymorphicHasOne-Slice-2"},
		}, {
			Name: "PolymorphicHasOne-Slice-3",
			Toy:  Toy{Name: "Toy-PolymorphicHasOne-Slice-3"},
		}}

		if err := DB.Create(&pets).Error; err != nil {
			t.Fatalf("errors happened when create: %v", err)
		}

			t.Fatalf("errors happened when create: %v", err)
		}

		pet.Toy = Toy{Name: "Update-HasOneAssociation-Polymorphic"}

		if err := DB.Save(&pet).Error; err != nil {
			t.Fatalf("errors happened when create: %v", err)
		}

		var pet2 Pet
		DB.Preload("Toy").Find(&pet2, "id = ?", pet.ID)
		CheckPet(t, pet2, pet)

		pet.Toy.Name += "new"
		if err := DB.Save(&pet).Error; err != nil {

					Name: "nested-joins-manager-company-1",
				},
				NamedPet: &Pet{
					Name: "nested-joins-manager-namepet-1",
					Toy: Toy{
						Name: "nested-joins-manager-namepet-toy-1",
					},
				},
			},
			NamedPet: &Pet{Name: "nested-joins-namepet-1", Toy: Toy{Name: "nested-joins-namepet-toy-1"}},
		},
		{
			Name:     "nested-joins-2",