Add bulk create associations tests

callbacks/associations.go

@@ -18,6 +18,15 @@ func SaveBeforeAssociations(db *gorm.DB) {
 				continue
 			}
 
+			setupReferences := func(obj reflect.Value, elem reflect.Value) {
+				for _, ref := range rel.References {
+					if !ref.OwnPrimaryKey {
+						pv, _ := ref.PrimaryKey.ValueOf(elem)
+						ref.ForeignKey.Set(obj, pv)
+					}
+				}
+			}
+
 			switch db.Statement.ReflectValue.Kind() {
 			case reflect.Slice:
 				var (
@@ -43,12 +52,7 @@ func SaveBeforeAssociations(db *gorm.DB) {
 								elems = reflect.Append(elems, rv.Addr())
 							}
 						} else {
-							for _, ref := range rel.References {
-								if !ref.OwnPrimaryKey {
-									pv, _ := ref.PrimaryKey.ValueOf(rv)
-									ref.ForeignKey.Set(objs[i], pv)
-								}
-							}
+							setupReferences(obj, rv)
 						}
 					}
 				}
@@ -56,31 +60,20 @@ func SaveBeforeAssociations(db *gorm.DB) {
 				if elems.Len() > 0 {
 					if db.AddError(db.Session(&gorm.Session{}).Create(elems.Interface()).Error) == nil {
 						for i := 0; i < elems.Len(); i++ {
-							for _, ref := range rel.References {
-								if !ref.OwnPrimaryKey {
-									pv, _ := ref.PrimaryKey.ValueOf(elems.Index(i))
-									ref.ForeignKey.Set(objs[i], pv)
-								}
-							}
+							setupReferences(objs[i], elems.Index(i))
 						}
 					}
 				}
 			case reflect.Struct:
 				if _, zero := rel.Field.ValueOf(db.Statement.ReflectValue); !zero {
 					rv := rel.Field.ReflectValueOf(db.Statement.ReflectValue) // relation reflect value
-					if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(rv); isZero {
-						if rv.Kind() == reflect.Ptr {
-							db.Session(&gorm.Session{}).Create(rv.Interface())
-						} else {
-							db.Session(&gorm.Session{}).Create(rv.Addr().Interface())
-						}
+					if rv.Kind() != reflect.Ptr {
+						rv = rv.Addr()
+					}
 
-						for _, ref := range rel.References {
-							if !ref.OwnPrimaryKey {
-								pv, _ := ref.PrimaryKey.ValueOf(rv)
-								ref.ForeignKey.Set(db.Statement.ReflectValue, pv)
-							}
-						}
+					if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(rv); isZero {
+						db.Session(&gorm.Session{}).Create(rv.Interface())
+						setupReferences(db.Statement.ReflectValue, rv)
 					}
 				}
 			}
@@ -113,8 +106,13 @@ func SaveAfterAssociations(db *gorm.DB) {
 
 				for i := 0; i < db.Statement.ReflectValue.Len(); i++ {
 					obj := db.Statement.ReflectValue.Index(i)
-					if rv, zero := rel.Field.ValueOf(obj); !zero {
-						rv := reflect.ValueOf(rv)
+
+					if _, zero := rel.Field.ValueOf(obj); !zero {
+						rv := rel.Field.ReflectValueOf(obj)
+						if rv.Kind() != reflect.Ptr {
+							rv = rv.Addr()
+						}
+
 						for _, ref := range rel.References {
 							if ref.OwnPrimaryKey {
 								fv, _ := ref.PrimaryKey.ValueOf(obj)
@@ -125,11 +123,7 @@ func SaveAfterAssociations(db *gorm.DB) {
 						}
 
 						if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(rv); isZero {
-							if isPtr {
-								elems = reflect.Append(elems, rv)
-							} else {
-								elems = reflect.Append(elems, rv.Addr())
-							}
+							elems = reflect.Append(elems, rv)
 						}
 					}
 				}
@@ -140,6 +134,9 @@ func SaveAfterAssociations(db *gorm.DB) {
 			case reflect.Struct:
 				if _, zero := rel.Field.ValueOf(db.Statement.ReflectValue); !zero {
 					f := rel.Field.ReflectValueOf(db.Statement.ReflectValue)
+					if f.Kind() != reflect.Ptr {
+						f = f.Addr()
+					}
 
 					for _, ref := range rel.References {
 						if ref.OwnPrimaryKey {
@@ -151,11 +148,7 @@ func SaveAfterAssociations(db *gorm.DB) {
 					}
 
 					if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(f); isZero {
-						if f.Kind() == reflect.Ptr {
-							db.Session(&gorm.Session{}).Create(f.Interface())
-						} else {
-							db.Session(&gorm.Session{}).Create(f.Addr().Interface())
-						}
+						db.Session(&gorm.Session{}).Create(f.Interface())
 					}
 				}
 			}
@@ -168,9 +161,8 @@ func SaveAfterAssociations(db *gorm.DB) {
 			}
 
 			fieldType := rel.Field.IndirectFieldType.Elem()
-			isPtr := true
-			if fieldType.Kind() != reflect.Ptr {
-				isPtr = false
+			isPtr := fieldType.Kind() == reflect.Ptr
+			if !isPtr {
 				fieldType = reflect.PtrTo(fieldType)
 			}
 			elems := reflect.MakeSlice(reflect.SliceOf(fieldType), 0, 0)
@@ -221,46 +213,71 @@ func SaveAfterAssociations(db *gorm.DB) {
 			}
 
 			fieldType := rel.Field.IndirectFieldType.Elem()
-			isPtr := true
-			if fieldType.Kind() != reflect.Ptr {
-				isPtr = false
+			isPtr := fieldType.Kind() == reflect.Ptr
+			if !isPtr {
 				fieldType = reflect.PtrTo(fieldType)
 			}
 			elems := reflect.MakeSlice(reflect.SliceOf(fieldType), 0, 0)
+			joins := reflect.MakeSlice(reflect.SliceOf(rel.JoinTable.ModelType), 0, 0)
+			objs := []reflect.Value{}
 
-			switch db.Statement.ReflectValue.Kind() {
-			case reflect.Slice:
-				for i := 0; i < db.Statement.ReflectValue.Len(); i++ {
-					db.Statement.ReflectValue.Index(i)
+			appendToJoins := func(obj reflect.Value, elem reflect.Value) {
+				joinValue := reflect.New(rel.JoinTable.ModelType)
+				for _, ref := range rel.References {
+					if ref.OwnPrimaryKey {
+						fv, _ := ref.PrimaryKey.ValueOf(obj)
+						ref.ForeignKey.Set(joinValue, fv)
+					} else if ref.PrimaryValue != "" {
+						ref.ForeignKey.Set(joinValue, ref.PrimaryValue)
+					} else {
+						fv, _ := ref.PrimaryKey.ValueOf(elem)
+						ref.ForeignKey.Set(joinValue, fv)
+					}
 				}
-			case reflect.Struct:
-				if _, zero := rel.Field.ValueOf(db.Statement.ReflectValue); !zero {
-					f := reflect.Indirect(rel.Field.ReflectValueOf(db.Statement.ReflectValue))
+
+				joins = reflect.Append(joins, joinValue)
+			}
+
+			appendToElems := func(v reflect.Value) {
+				if _, zero := rel.Field.ValueOf(v); !zero {
+					f := reflect.Indirect(rel.Field.ReflectValueOf(v))
 
 					for i := 0; i < f.Len(); i++ {
 						elem := f.Index(i)
-						for _, ref := range rel.References {
-							if ref.OwnPrimaryKey {
-								fv, _ := ref.PrimaryKey.ValueOf(db.Statement.ReflectValue)
-								ref.ForeignKey.Set(elem, fv)
-							} else if ref.PrimaryValue != "" {
-								ref.ForeignKey.Set(elem, ref.PrimaryValue)
-							}
-						}
 
 						if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(elem); isZero {
+							objs = append(objs, v)
 							if isPtr {
 								elems = reflect.Append(elems, elem)
 							} else {
 								elems = reflect.Append(elems, elem.Addr())
 							}
+						} else {
+							appendToJoins(v, elem)
 						}
 					}
 				}
 			}
 
+			switch db.Statement.ReflectValue.Kind() {
+			case reflect.Slice:
+				for i := 0; i < db.Statement.ReflectValue.Len(); i++ {
+					appendToElems(db.Statement.ReflectValue.Index(i))
+				}
+			case reflect.Struct:
+				appendToElems(db.Statement.ReflectValue)
+			}
+
 			if elems.Len() > 0 {
 				db.Session(&gorm.Session{}).Create(elems.Interface())
+
+				for i := 0; i < elems.Len(); i++ {
+					appendToJoins(objs[i], elems.Index(i))
+				}
+			}
+
+			if joins.Len() > 0 {
+				db.Session(&gorm.Session{}).Create(joins.Interface())
 			}
 		}
 	}

tests/create.go

@@ -40,16 +40,53 @@ func TestCreate(t *testing.T, db *gorm.DB) {
 		} else {
 			AssertObjEqual(t, newUser, user, "Name", "Age", "Birthday")
 		}
-	})
 
-	TestCreateAssociations(t, db)
+		TestCreateAssociations(t, db)
+	})
 }
 
 func TestCreateAssociations(t *testing.T, db *gorm.DB) {
+	TestCreateBelongsToAssociations(t, db)
+	TestCreateHasOneAssociations(t, db)
+	TestCreateHasManyAssociations(t, db)
+	TestCreateMany2ManyAssociations(t, db)
+}
+
+func TestCreateBelongsToAssociations(t *testing.T, db *gorm.DB) {
 	db.Migrator().DropTable(&Company{})
 	db.Migrator().AutoMigrate(&Company{})
 
-	t.Run("Create-BelongsToAssociation", func(t *testing.T) {
+	check := func(t *testing.T, user User) {
+		if user.Company.Name != "" {
+			if user.CompanyID == nil {
+				t.Errorf("Company's foreign key should be saved")
+			} else {
+				var company Company
+				db.First(&company, "id = ?", *user.CompanyID)
+				if company.Name != user.Company.Name {
+					t.Errorf("Company's name should be same")
+				}
+			}
+		} else if user.CompanyID != nil {
+			t.Errorf("Company should not be created for zero value, got: %+v", user.CompanyID)
+		}
+
+		if user.Manager != nil {
+			if user.ManagerID == nil {
+				t.Errorf("Manager's foreign key should be saved")
+			} else {
+				var manager User
+				db.First(&manager, "id = ?", *user.ManagerID)
+				if manager.Name != user.Manager.Name {
+					t.Errorf("Manager's name should be same")
+				}
+			}
+		} else if user.ManagerID != nil {
+			t.Errorf("Manager should not be created for zero value, got: %+v", user.ManagerID)
+		}
+	}
+
+	t.Run("BelongsTo", func(t *testing.T) {
 		var user = User{
 			Name:     "create",
 			Age:      18,
@@ -62,28 +99,113 @@ func TestCreateAssociations(t *testing.T, db *gorm.DB) {
 			t.Fatalf("errors happened when create: %v", err)
 		}
 
-		if user.CompanyID == nil {
-			t.Errorf("Failed to create belongs to association - Company")
-		} else {
-			var company Company
-			db.First(&company, "id = ?", *user.CompanyID)
-			if company.Name != "company-belongs-to-association" {
-				t.Errorf("Failed to query saved belongs to association - Company")
-			}
+		check(t, user)
+	})
+
+	t.Run("BelongsToForBulkInsert", func(t *testing.T) {
+		var users = []User{{
+			Name:     "create-1",
+			Age:      18,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-1"},
+			Manager:  &User{Name: "manager-belongs-to-association-1"},
+		}, {
+			Name:     "create-2",
+			Age:      28,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-2"},
+		}, {
+			Name:     "create-3",
+			Age:      38,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-3"},
+			Manager:  &User{Name: "manager-belongs-to-association-3"},
+		}}
+
+		if err := db.Create(&users).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
 		}
 
-		if user.ManagerID == nil {
-			t.Errorf("Failed to create belongs to association - Manager")
-		} else {
-			var manager User
-			db.First(&manager, "id = ?", *user.ManagerID)
-			if manager.Name != "manager-belongs-to-association" {
-				t.Errorf("Failed to query saved belongs to association - Manager")
-			}
+		for _, user := range users {
+			check(t, user)
 		}
 	})
 
-	t.Run("Create-HasOneAssociation", func(t *testing.T) {
+	t.Run("BelongsToForBulkInsertPtrData", func(t *testing.T) {
+		var users = []*User{{
+			Name:     "create-1",
+			Age:      18,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-1"},
+			Manager:  &User{Name: "manager-belongs-to-association-1"},
+		}, {
+			Name:     "create-2",
+			Age:      28,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-2"},
+		}, {
+			Name:     "create-3",
+			Age:      38,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-3"},
+			Manager:  &User{Name: "manager-belongs-to-association-3"},
+		}}
+
+		if err := db.Create(&users).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, user := range users {
+			check(t, *user)
+		}
+	})
+
+	t.Run("BelongsToForBulkInsertWithoutPtr", func(t *testing.T) {
+		var users = []*User{{
+			Name:     "create-1",
+			Age:      18,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-1"},
+			Manager:  &User{Name: "manager-belongs-to-association-1"},
+		}, {
+			Name:     "create-2",
+			Age:      28,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-2"},
+		}, {
+			Name:     "create-3",
+			Age:      38,
+			Birthday: Now(),
+			Company:  Company{Name: "company-belongs-to-association-3"},
+			Manager:  &User{Name: "manager-belongs-to-association-3"},
+		}}
+
+		if err := db.Create(users).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, user := range users {
+			check(t, *user)
+		}
+	})
+}
+
+func TestCreateHasOneAssociations(t *testing.T, db *gorm.DB) {
+	check := func(t *testing.T, user User) {
+		if user.Account.ID == 0 {
+			t.Errorf("Account should be saved")
+		} else if user.Account.UserID.Int64 != int64(user.ID) {
+			t.Errorf("Account's foreign key should be saved")
+		} else {
+			var account Account
+			db.First(&account, "id = ?", user.Account.ID)
+			if account.Number != user.Account.Number {
+				t.Errorf("Account's number should be sme")
+			}
+		}
+	}
+
+	t.Run("HasOne", func(t *testing.T) {
 		var user = User{
 			Name:     "create",
 			Age:      18,
@@ -95,20 +217,103 @@ func TestCreateAssociations(t *testing.T, db *gorm.DB) {
 			t.Fatalf("errors happened when create: %v", err)
 		}
 
-		if user.Account.ID == 0 {
-			t.Errorf("Failed to create has one association - Account")
-		} else if user.Account.UserID.Int64 != int64(user.ID) {
-			t.Errorf("Failed to create has one association - Account")
-		} else {
-			var account Account
-			db.First(&account, "id = ?", user.Account.ID)
-			if user.Account.Number != "account-has-one-association" {
-				t.Errorf("Failed to query saved has one association - Account")
-			}
+		check(t, user)
+	})
+
+	t.Run("HasOneForBulkInsert", func(t *testing.T) {
+		var users = []User{{
+			Name:     "create-1",
+			Age:      18,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-1"},
+		}, {
+			Name:     "create-2",
+			Age:      28,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-2"},
+		}, {
+			Name:     "create-3",
+			Age:      38,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-3"},
+		}}
+
+		if err := db.Create(&users).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, user := range users {
+			check(t, user)
 		}
 	})
 
-	t.Run("Create-HasOneAssociation-Polymorphic", func(t *testing.T) {
+	t.Run("HasOneForBulkInsertPtrData", func(t *testing.T) {
+		var users = []*User{{
+			Name:     "create-1",
+			Age:      18,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-1"},
+		}, {
+			Name:     "create-2",
+			Age:      28,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-2"},
+		}, {
+			Name:     "create-3",
+			Age:      38,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-3"},
+		}}
+
+		if err := db.Create(&users).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, user := range users {
+			check(t, *user)
+		}
+	})
+
+	t.Run("HasOneForBulkInsertWithoutPtr", func(t *testing.T) {
+		var users = []User{{
+			Name:     "create-1",
+			Age:      18,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-1"},
+		}, {
+			Name:     "create-2",
+			Age:      28,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-2"},
+		}, {
+			Name:     "create-3",
+			Age:      38,
+			Birthday: Now(),
+			Account:  Account{Number: "account-has-one-association-3"},
+		}}
+
+		if err := db.Create(users).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, user := range users {
+			check(t, user)
+		}
+	})
+
+	checkPet := func(t *testing.T, pet Pet) {
+		if pet.Toy.OwnerID != fmt.Sprint(pet.ID) || pet.Toy.OwnerType != "pets" {
+			t.Errorf("Failed to create polymorphic has one association - toy owner id %v, owner type %v", pet.Toy.OwnerID, pet.Toy.OwnerType)
+		} else {
+			var toy Toy
+			db.First(&toy, "owner_id = ? and owner_type = ?", pet.Toy.OwnerID, pet.Toy.OwnerType)
+			if toy.Name != pet.Toy.Name {
+				t.Errorf("Failed to query saved polymorphic has one association")
+			}
+		}
+	}
+
+	t.Run("PolymorphicHasOne", func(t *testing.T) {
 		var pet = Pet{
 			Name: "create",
 			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic"},
@@ -118,18 +323,75 @@ func TestCreateAssociations(t *testing.T, db *gorm.DB) {
 			t.Fatalf("errors happened when create: %v", err)
 		}
 
-		if pet.Toy.OwnerID != fmt.Sprint(pet.ID) || pet.Toy.OwnerType != "pets" {
-			t.Errorf("Failed to create polymorphic has one association - toy owner id %v, owner type %v", pet.Toy.OwnerID, pet.Toy.OwnerType)
-		} else {
-			var toy Toy
-			db.First(&toy, "owner_id = ? and owner_type = ?", pet.Toy.OwnerID, pet.Toy.OwnerType)
-			if toy.Name != "Create-HasOneAssociation-Polymorphic" {
-				t.Errorf("Failed to query saved polymorphic has one association")
-			}
+		checkPet(t, pet)
+	})
+
+	t.Run("PolymorphicHasOneForBulkInsert", func(t *testing.T) {
+		var pets = []Pet{{
+			Name: "create-1",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-1"},
+		}, {
+			Name: "create-2",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-2"},
+		}, {
+			Name: "create-3",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-3"},
+		}}
+
+		if err := db.Create(&pets).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, pet := range pets {
+			checkPet(t, pet)
 		}
 	})
 
-	t.Run("Create-HasManyAssociation", func(t *testing.T) {
+	t.Run("PolymorphicHasOneForBulkInsertPtrData", func(t *testing.T) {
+		var pets = []*Pet{{
+			Name: "create-1",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-1"},
+		}, {
+			Name: "create-2",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-2"},
+		}, {
+			Name: "create-3",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-3"},
+		}}
+
+		if err := db.Create(&pets).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, pet := range pets {
+			checkPet(t, *pet)
+		}
+	})
+
+	t.Run("PolymorphicHasOneForBulkInsertWithoutPtr", func(t *testing.T) {
+		var pets = []*Pet{{
+			Name: "create-1",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-1"},
+		}, {
+			Name: "create-2",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-2"},
+		}, {
+			Name: "create-3",
+			Toy:  Toy{Name: "Create-HasOneAssociation-Polymorphic-3"},
+		}}
+
+		if err := db.Create(pets).Error; err != nil {
+			t.Fatalf("errors happened when create: %v", err)
+		}
+
+		for _, pet := range pets {
+			checkPet(t, *pet)
+		}
+	})
+}
+
+func TestCreateHasManyAssociations(t *testing.T, db *gorm.DB) {
+	t.Run("HasMany", func(t *testing.T) {
 		var user = User{
 			Name:     "create",
 			Age:      18,
@@ -156,7 +418,7 @@ func TestCreateAssociations(t *testing.T, db *gorm.DB) {
 		}
 	})
 
-	t.Run("Create-HasManyAssociation-Polymorphic", func(t *testing.T) {
+	t.Run("PolymorphicHasMany", func(t *testing.T) {
 		var user = User{
 			Name:     "create",
 			Age:      18,
@@ -183,3 +445,6 @@ func TestCreateAssociations(t *testing.T, db *gorm.DB) {
 		}
 	})
 }
+
+func TestCreateMany2ManyAssociations(t *testing.T, db *gorm.DB) {
+}