feat: add OrderByDesc method (#400)

contracts/database/orm/orm.go

@@ -92,6 +92,8 @@ type Query interface {
 	Omit(columns ...string) Query
 	// Order specifies the order in which the results should be returned.
 	Order(value any) Query
+	// OrderByDesc specifies the order should be descending.
+	OrderByDesc(column string) Query
 	// OrWhere add an "or where" clause to the query.
 	OrWhere(query any, args ...any) Query
 	// OrWhereIn adds an "or where column in" clause to the query.

database/gorm/query.go

@@ -451,6 +451,10 @@ func (r *QueryImpl) Order(value any) ormcontract.Query {
 	return NewQueryImplByInstance(tx, r)
 }
 
+func (r *QueryImpl) OrderByDesc(column string) ormcontract.Query {
+	return r.Order(fmt.Sprintf("%s DESC", column))
+}
+
 func (r *QueryImpl) OrWhere(query any, args ...any) ormcontract.Query {
 	tx := r.instance.Or(query, args...)
 

database/gorm/query_test.go

@@ -1953,6 +1953,26 @@ func (s *QueryTestSuite) TestOrder() {
 	}
 }
 
+func (s *QueryTestSuite) TestOrderByDesc() {
+	for driver, query := range s.queries {
+		s.Run(driver.String(), func() {
+			user := User{Name: "order_desc_user", Avatar: "order_desc_avatar"}
+			s.Nil(query.Create(&user))
+			s.True(user.ID > 0)
+
+			user1 := User{Name: "order_desc_user", Avatar: "order_desc_avatar1"}
+			s.Nil(query.Create(&user1))
+			s.True(user1.ID > 0)
+
+			var users []User
+			s.Nil(query.Where("name = ?", "order_desc_user").OrderByDesc("id").Get(&users))
+			usersLength := len(users)
+			s.True(usersLength == 2)
+			s.True(users[usersLength-1].ID == user.ID)
+		})
+	}
+}
+
 func (s *QueryTestSuite) TestPaginate() {
 	for driver, query := range s.queries {
 		s.Run(driver.String(), func() {