Add DropTable

README.md

@@ -248,6 +248,9 @@ db.Where("name <> ?", "jinzhu").Where("age >= ? and role <> ?", 20, "admin").Fin
 // Create Table with struct
 db.CreateTable(&User{})
 
+// Drop Table
+db.DropTable(&User{})
+
 // Specify Table Name
 db.Table("deleted_users").CreateTable(&User{})
 db.Table("users").Pluck("age", &ages)

chain.go

@@ -236,6 +236,11 @@ func (s *Chain) CreateTable(value interface{}) *Chain {
 	return s
 }
 
+func (s *Chain) DropTable(value interface{}) *Chain {
+	s.do(value).dropTable().exec()
+	return s
+}
+
 func (s *Chain) Unscoped() *Chain {
 	s.unscoped = true
 	return s

do.go

@@ -577,6 +577,14 @@ func (s *Do) createTable() *Do {
 	return s
 }
 
+func (s *Do) dropTable() *Do {
+	s.sql = fmt.Sprintf(
+		"DROP TABLE \"%v\"",
+		s.tableName(),
+	)
+	return s
+}
+
 func (s *Do) initializeWithSearchCondition() {
 	m := Model{data: s.value, driver: s.driver}
 

gorm_test.go

@@ -50,18 +50,21 @@ func init() {
 	db.SetPool(10)
 	// db.DebugMode = true
 
-	err = db.Exec("drop table users;").Error
+	err = db.DropTable(&User{}).Error
 	if err != nil {
 		fmt.Printf("Got error when try to delete table users, %+v\n", err)
 	}
-	db.Exec("drop table products;")
+	db.Exec("drop table products")
 
-	orm := db.CreateTable(&User{})
+	err = db.CreateTable(&User{}).Error
-	if orm.Error != nil {
+	if err != nil {
-		panic(fmt.Sprintf("No error should happen when create table, but got %+v", orm.Error))
+		panic(fmt.Sprintf("No error should happen when create table, but got %+v", err))
 	}
 
-	db.CreateTable(&Product{})
+	err = db.CreateTable(&Product{}).Error
+	if err != nil {
+		panic(fmt.Sprintf("No error should happen when create table, but got %+v", err))
+	}
 
 	var shortForm = "2006-01-02 15:04:05"
 	t1, _ = time.Parse(shortForm, "2000-10-27 12:02:40")

main.go

@@ -101,3 +101,7 @@ func (s *DB) Debug() *Chain {
 func (s *DB) CreateTable(value interface{}) *Chain {
 	return s.buildChain().CreateTable(value)
 }
+
+func (s *DB) DropTable(value interface{}) *Chain {
+	return s.buildChain().DropTable(value)
+}