orm: sql type in struct by attribute (#14919)

vlib/mysql/mysql_orm_test.v

@@ -1,6 +1,24 @@
 import orm
 import mysql
 
+struct TestCustomSqlType {
+	id      int    [primary; sql: serial]
+	custom  string [sql_type: 'TEXT']
+	custom1 string [sql_type: 'VARCHAR(191)']
+	custom2 string [sql_type: 'datetime(3)']
+	custom3 string [sql_type: 'MEDIUMINT']
+	custom4 string [sql_type: 'DATETIME']
+	custom5 string [sql_type: 'datetime']
+}
+
+struct TestCustomWrongSqlType {
+	id      int    [primary; sql: serial]
+	custom  string
+	custom1 string [sql_type: 'VARCHAR']
+	custom2 string [sql_type: 'money']
+	custom3 string [sql_type: 'xml']
+}
+
 fn test_mysql_orm() {
 	mut mdb := mysql.Connection{
 		host: 'localhost'
@@ -29,7 +47,7 @@ fn test_mysql_orm() {
 		},
 		orm.TableField{
 			name: 'name'
-			typ: 18
+			typ: 20
 			attrs: []
 		},
 		orm.TableField{
@@ -47,11 +65,11 @@ fn test_mysql_orm() {
 		table: 'Test'
 		has_where: true
 		fields: ['id', 'name', 'age']
-		types: [7, 18, 8]
+		types: [7, 20, 8]
 	}, orm.QueryData{}, orm.QueryData{
 		fields: ['name', 'age']
 		data: [orm.Primitive('Louis'), i64(101)]
-		types: [18, 8]
+		types: [20, 8]
 		is_and: [true, true]
 		kinds: [.eq, .eq]
 	}) or { panic(err) }
@@ -75,3 +93,69 @@ fn test_mysql_orm() {
 		assert age == 101
 	}
 }
+
+fn test_orm() {
+	mut db := mysql.Connection{
+		host: 'localhost'
+		port: 3306
+		username: 'root'
+		password: ''
+		dbname: 'mysql'
+	}
+
+	db.connect() or {
+		println(err)
+		panic(err)
+	}
+
+	sql db {
+		create table TestCustomSqlType
+	}
+
+	mut result_custom_sql := db.query("
+		SELECT DATA_TYPE, COLUMN_TYPE 
+		FROM INFORMATION_SCHEMA.COLUMNS
+		WHERE TABLE_NAME = 'TestCustomSqlType'
+		ORDER BY ORDINAL_POSITION
+	") or {
+		println(err)
+		panic(err)
+	}
+
+	information_schema_custom_sql := [
+		{
+			'DATA_TYPE':   'bigint'
+			'COLUMN_TYPE': 'bigint unsigned'
+		},
+		{
+			'DATA_TYPE':   'text'
+			'COLUMN_TYPE': 'text'
+		},
+		{
+			'DATA_TYPE':   'varchar'
+			'COLUMN_TYPE': 'varchar(191)'
+		},
+		{
+			'DATA_TYPE':   'datetime'
+			'COLUMN_TYPE': 'datetime(3)'
+		},
+		{
+			'DATA_TYPE':   'mediumint'
+			'COLUMN_TYPE': 'mediumint'
+		},
+		{
+			'DATA_TYPE':   'datetime'
+			'COLUMN_TYPE': 'datetime'
+		},
+		{
+			'DATA_TYPE':   'datetime'
+			'COLUMN_TYPE': 'datetime'
+		},
+	]
+
+	assert result_custom_sql.maps() == information_schema_custom_sql
+
+	sql db {
+		drop table TestCustomSqlType
+	}
+}

vlib/orm/README.md

@@ -14,6 +14,7 @@
 - `[skip]` field will be skipped
 - `[sql: type]` where `type` is a V type such as `int` or `f64`, or special type `serial`
 - `[sql: 'name']` sets a custom column name for the field
+- `[sql_type: 'SQL TYPE']` sets the sql type which is used in sql
 
 ## Usage
 

vlib/orm/orm.v

@@ -363,6 +363,10 @@ pub fn orm_table_gen(table string, q string, defaults bool, def_unique_len int,
 		mut unique_len := 0
 		// mut fkey := ''
 		mut field_name := sql_field_name(field)
+		mut ctyp := sql_from_v(sql_field_type(field)) or {
+			field_name = '${field_name}_id'
+			sql_from_v(7)?
+		}
 		for attr in field.attrs {
 			match attr.name {
 				'primary' {
@@ -387,6 +391,12 @@ pub fn orm_table_gen(table string, q string, defaults bool, def_unique_len int,
 				'skip' {
 					is_skip = true
 				}
+				'sql_type' {
+					if attr.kind != .string {
+						return error("sql_type attribute need be string. Try [sql_type: '$attr.arg'] instead of [sql_type: $attr.arg]")
+					}
+					ctyp = attr.arg
+				}
 				/*'fkey' {
 					if attr.arg != '' {
 						if attr.kind == .string {
@@ -402,10 +412,6 @@ pub fn orm_table_gen(table string, q string, defaults bool, def_unique_len int,
 			continue
 		}
 		mut stmt := ''
-		mut ctyp := sql_from_v(sql_field_type(field)) or {
-			field_name = '${field_name}_id'
-			sql_from_v(7)?
-		}
 		if ctyp == '' {
 			return error('Unknown type ($field.typ) for field $field.name in struct $table')
 		}