}

	if err != nil {
		tx.AddError(err)
	}

	return tx
}

// Commit commits the changes in a transaction
func (db *DB) Commit() *DB {
	if committer, ok := db.Statement.ConnPool.(TxCommitter); ok && committer != nil && !reflect.ValueOf(committer).IsNil() {
		db.AddError(committer.Commit())
	} else {
		db.AddError(ErrInvalidTransaction)
	}
	return db
}

	user := User{Name: "transaction"}
	if err := tx.Save(&user).Error; err != nil {
		t.Fatalf("No error should raise")
	}

	if err := tx.Commit().Error; err != nil {
		t.Fatalf("Commit should not raise error")
	}

	if err := tx.Rollback().Error; err == nil {
		t.Fatalf("Rollback after commit should raise error")
	}
}

func TestTransactionWithSavePoint(t *testing.T) {
	tx := DB.Begin()

	user.Team = nil
	user.Friends = nil

	CheckUser(t, user2, user)
}

func TestOmitWithCreate(t *testing.T) {
	user := *GetUser("omit_create", Config{Account: true, Pets: 3, Toys: 3, Company: true, Manager: true, Team: 3, Languages: 3, Friends: 4})
	DB.Omit("Account", "Toys", "Manager", "Birthday").Create(&user)

	var result User

			}
		}
	default:
		tx.AddError(fmt.Errorf("unsupported select args %v %v", query, args))
	}

	return
}

// Omit specify fields that you want to ignore when creating, updating and querying
func (db *DB) Omit(columns ...string) (tx *DB) {
	tx = db.getInstance()

	if len(columns) == 1 && strings.ContainsRune(columns[0], ',') {

	}
}

func TestOmitWithUpdate(t *testing.T) {
	user := *GetUser("omit_update", Config{Account: true, Pets: 3, Toys: 3, Company: true, Manager: true, Team: 3, Languages: 3, Friends: 4})
	DB.Create(&user)

	var result User
	DB.First(&result, user.ID)

	user2 := *GetUser("omit_update_new", Config{Account: true, Pets: 3, Toys: 3, Company: true, Manager: true, Team: 3, Languages: 3, Friends: 4})

			columnName := matches[3]
			if star != "" {
				return table, star
			}
			return table, columnName
		}
		return "", ""
	}
}()

// SelectAndOmitColumns get select and omit columns, select -> true, omit -> false
func (stmt *Statement) SelectAndOmitColumns(requireCreate, requireUpdate bool) (map[string]bool, bool) {
	results := map[string]bool{}
	notRestricted := false

	user := *GetUser("many2many_omit_associations", Config{Languages: 2})

	if err := DB.Omit("Languages.*").Create(&user).Error; err == nil {
		t.Fatalf("should raise error when create users without languages reference")
	}

	if err := DB.Create(&user.Languages).Error; err != nil {
		t.Fatalf("no error should happen when create languages, but got %v", err)
	}

	if err := DB.Omit("Languages.*").Create(&user).Error; err != nil {