orm: allow inserting empty objects with db.sqlite (SQLite uses a slightly different SQL dialect) (#17334)

vlib/db/mysql/orm.v

@@ -134,20 +134,20 @@ pub fn (db Connection) insert(table string, data orm.QueryData) ! {
 		is_and: []
 	}
 
-	query, converted_data := orm.orm_stmt_gen(table, '`', .insert, false, '?', 1, converted_primitive_data,
+	query, converted_data := orm.orm_stmt_gen(.default, table, '`', .insert, false, '?',
-		orm.QueryData{})
+		1, converted_primitive_data, orm.QueryData{})
 	mysql_stmt_worker(db, query, converted_data, orm.QueryData{})!
 }
 
 // update is used internally by V's ORM for processing `UPDATE ` queries
 pub fn (db Connection) update(table string, data orm.QueryData, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .update, false, '?', 1, data, where)
+	query, _ := orm.orm_stmt_gen(.default, table, '`', .update, false, '?', 1, data, where)
 	mysql_stmt_worker(db, query, data, where)!
 }
 
 // delete is used internally by V's ORM for processing `DELETE ` queries
 pub fn (db Connection) delete(table string, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .delete, false, '?', 1, orm.QueryData{},
+	query, _ := orm.orm_stmt_gen(.default, table, '`', .delete, false, '?', 1, orm.QueryData{},
 		where)
 	mysql_stmt_worker(db, query, orm.QueryData{}, where)!
 }

vlib/db/pg/orm.v

@@ -33,20 +33,21 @@ pub fn (db DB) @select(config orm.SelectConfig, data orm.QueryData, where orm.Qu
 
 // insert is used internally by V's ORM for processing `INSERT ` queries
 pub fn (db DB) insert(table string, data orm.QueryData) ! {
-	query, converted_data := orm.orm_stmt_gen(table, '"', .insert, true, '$', 1, data,
+	query, converted_data := orm.orm_stmt_gen(.default, table, '"', .insert, true, '$',
-		orm.QueryData{})
+		1, data, orm.QueryData{})
 	pg_stmt_worker(db, query, converted_data, orm.QueryData{})!
 }
 
 // update is used internally by V's ORM for processing `UPDATE ` queries
 pub fn (db DB) update(table string, data orm.QueryData, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '"', .update, true, '$', 1, data, where)
+	query, _ := orm.orm_stmt_gen(.default, table, '"', .update, true, '$', 1, data, where)
 	pg_stmt_worker(db, query, data, where)!
 }
 
 // delete is used internally by V's ORM for processing `DELETE ` queries
 pub fn (db DB) delete(table string, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '"', .delete, true, '$', 1, orm.QueryData{}, where)
+	query, _ := orm.orm_stmt_gen(.default, table, '"', .delete, true, '$', 1, orm.QueryData{},
+		where)
 	pg_stmt_worker(db, query, orm.QueryData{}, where)!
 }
 

vlib/db/sqlite/orm.v

@@ -53,20 +53,21 @@ pub fn (db DB) @select(config orm.SelectConfig, data orm.QueryData, where orm.Qu
 
 // insert is used internally by V's ORM for processing `INSERT ` queries
 pub fn (db DB) insert(table string, data orm.QueryData) ! {
-	query, converted_data := orm.orm_stmt_gen(table, '`', .insert, true, '?', 1, data,
+	query, converted_data := orm.orm_stmt_gen(.sqlite, table, '`', .insert, true, '?',
-		orm.QueryData{})
+		1, data, orm.QueryData{})
 	sqlite_stmt_worker(db, query, converted_data, orm.QueryData{})!
 }
 
 // update is used internally by V's ORM for processing `UPDATE ` queries
 pub fn (db DB) update(table string, data orm.QueryData, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .update, true, '?', 1, data, where)
+	query, _ := orm.orm_stmt_gen(.sqlite, table, '`', .update, true, '?', 1, data, where)
 	sqlite_stmt_worker(db, query, data, where)!
 }
 
 // delete is used internally by V's ORM for processing `DELETE ` queries
 pub fn (db DB) delete(table string, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .delete, true, '?', 1, orm.QueryData{}, where)
+	query, _ := orm.orm_stmt_gen(.sqlite, table, '`', .delete, true, '?', 1, orm.QueryData{},
+		where)
 	sqlite_stmt_worker(db, query, orm.QueryData{}, where)!
 }
 

vlib/mysql/orm.v

@@ -132,18 +132,18 @@ pub fn (db Connection) insert(table string, data orm.QueryData) ! {
 		is_and: []
 	}
 
-	query, converted_data := orm.orm_stmt_gen(table, '`', .insert, false, '?', 1, converted_primitive_data,
+	query, converted_data := orm.orm_stmt_gen(.default, table, '`', .insert, false, '?',
-		orm.QueryData{})
+		1, converted_primitive_data, orm.QueryData{})
 	mysql_stmt_worker(db, query, converted_data, orm.QueryData{})!
 }
 
 pub fn (db Connection) update(table string, data orm.QueryData, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .update, false, '?', 1, data, where)
+	query, _ := orm.orm_stmt_gen(.default, table, '`', .update, false, '?', 1, data, where)
 	mysql_stmt_worker(db, query, data, where)!
 }
 
 pub fn (db Connection) delete(table string, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .delete, false, '?', 1, orm.QueryData{},
+	query, _ := orm.orm_stmt_gen(.default, table, '`', .delete, false, '?', 1, orm.QueryData{},
 		where)
 	mysql_stmt_worker(db, query, orm.QueryData{}, where)!
 }

vlib/orm/orm.v

@@ -79,6 +79,11 @@ pub enum OrderType {
 	desc
 }
 
+pub enum SQLDialect {
+	default
+	sqlite
+}
+
 fn (kind OperationKind) to_str() string {
 	str := match kind {
 		.neq { '!=' }
@@ -181,9 +186,9 @@ pub interface Connection {
 // Generates an sql stmt, from universal parameter
 // q - The quotes character, which can be different in every type, so it's variable
 // num - Stmt uses nums at prepared statements (? or ?1)
-// qm - Character for prepared statment, qm because of quotation mark like in sqlite
+// qm - Character for prepared statement, qm because of quotation mark like in sqlite
 // start_pos - When num is true, it's the start position of the counter
-pub fn orm_stmt_gen(table string, q string, kind StmtKind, num bool, qm string, start_pos int, data QueryData, where QueryData) (string, QueryData) {
+pub fn orm_stmt_gen(sql_dialect SQLDialect, table string, q string, kind StmtKind, num bool, qm string, start_pos int, data QueryData, where QueryData) (string, QueryData) {
 	mut str := ''
 	mut c := start_pos
 	mut data_fields := []string{}
@@ -217,11 +222,19 @@ pub fn orm_stmt_gen(table string, q string, kind StmtKind, num bool, qm string,
 				c++
 			}
 
-			str += 'INSERT INTO ${q}${table}${q} ('
+			str += 'INSERT INTO ${q}${table}${q} '
-			str += select_fields.join(', ')
+
-			str += ') VALUES ('
+			are_values_empty := values.len == 0
-			str += values.join(', ')
+
-			str += ')'
+			if sql_dialect == .sqlite && are_values_empty {
+				str += 'DEFAULT VALUES'
+			} else {
+				str += '('
+				str += select_fields.join(', ')
+				str += ') VALUES ('
+				str += values.join(', ')
+				str += ')'
+			}
 		}
 		.update {
 			str += 'UPDATE ${q}${table}${q} SET '

vlib/orm/orm_fn_test.v

@@ -1,7 +1,7 @@
 import orm
 
 fn test_orm_stmt_gen_update() {
-	query, _ := orm.orm_stmt_gen('Test', "'", .update, true, '?', 0, orm.QueryData{
+	query, _ := orm.orm_stmt_gen(.default, 'Test', "'", .update, true, '?', 0, orm.QueryData{
 		fields: ['test', 'a']
 		data: []
 		types: []
@@ -16,7 +16,7 @@ fn test_orm_stmt_gen_update() {
 }
 
 fn test_orm_stmt_gen_insert() {
-	query, _ := orm.orm_stmt_gen('Test', "'", .insert, true, '?', 0, orm.QueryData{
+	query, _ := orm.orm_stmt_gen(.default, 'Test', "'", .insert, true, '?', 0, orm.QueryData{
 		fields: ['test', 'a']
 		data: []
 		types: []
@@ -26,7 +26,7 @@ fn test_orm_stmt_gen_insert() {
 }
 
 fn test_orm_stmt_gen_delete() {
-	query, _ := orm.orm_stmt_gen('Test', "'", .delete, true, '?', 0, orm.QueryData{
+	query, _ := orm.orm_stmt_gen(.default, 'Test', "'", .delete, true, '?', 0, orm.QueryData{
 		fields: ['test', 'a']
 		data: []
 		types: []

vlib/orm/orm_insert_test.v

@@ -21,12 +21,33 @@ mut:
 	text     string
 }
 
+struct Account {
+	id int [primary; sql: serial]
+}
+
 pub fn insert_parent(db sqlite.DB, mut parent Parent) {
 	sql db {
 		insert parent into Parent
 	}
 }
 
+fn test_insert_empty_object() {
+	db := sqlite.connect(':memory:') or { panic(err) }
+
+	account := Account{}
+
+	sql db {
+		create table Account
+		insert account into Account
+	}
+
+	accounts := sql db {
+		select from Account
+	}
+
+	assert accounts.len == 1
+}
+
 fn test_orm_insert_mut_object() {
 	db := sqlite.connect(':memory:') or { panic(err) }
 

vlib/pg/orm.v

@@ -31,18 +31,19 @@ pub fn (db DB) @select(config orm.SelectConfig, data orm.QueryData, where orm.Qu
 // sql stmt
 
 pub fn (db DB) insert(table string, data orm.QueryData) ! {
-	query, converted_data := orm.orm_stmt_gen(table, '"', .insert, true, '$', 1, data,
+	query, converted_data := orm.orm_stmt_gen(.default, table, '"', .insert, true, '$',
-		orm.QueryData{})
+		1, data, orm.QueryData{})
 	pg_stmt_worker(db, query, converted_data, orm.QueryData{})!
 }
 
 pub fn (db DB) update(table string, data orm.QueryData, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '"', .update, true, '$', 1, data, where)
+	query, _ := orm.orm_stmt_gen(.default, table, '"', .update, true, '$', 1, data, where)
 	pg_stmt_worker(db, query, data, where)!
 }
 
 pub fn (db DB) delete(table string, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '"', .delete, true, '$', 1, orm.QueryData{}, where)
+	query, _ := orm.orm_stmt_gen(.default, table, '"', .delete, true, '$', 1, orm.QueryData{},
+		where)
 	pg_stmt_worker(db, query, orm.QueryData{}, where)!
 }
 

vlib/sqlite/orm.v

@@ -53,18 +53,19 @@ pub fn (db DB) @select(config orm.SelectConfig, data orm.QueryData, where orm.Qu
 // sql stmt
 
 pub fn (db DB) insert(table string, data orm.QueryData) ! {
-	query, converted_data := orm.orm_stmt_gen(table, '`', .insert, true, '?', 1, data,
+	query, converted_data := orm.orm_stmt_gen(.sqlite, table, '`', .insert, true, '?',
-		orm.QueryData{})
+		1, data, orm.QueryData{})
 	sqlite_stmt_worker(db, query, converted_data, orm.QueryData{})!
 }
 
 pub fn (db DB) update(table string, data orm.QueryData, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .update, true, '?', 1, data, where)
+	query, _ := orm.orm_stmt_gen(.sqlite, table, '`', .update, true, '?', 1, data, where)
 	sqlite_stmt_worker(db, query, data, where)!
 }
 
 pub fn (db DB) delete(table string, where orm.QueryData) ! {
-	query, _ := orm.orm_stmt_gen(table, '`', .delete, true, '?', 1, orm.QueryData{}, where)
+	query, _ := orm.orm_stmt_gen(.sqlite, table, '`', .delete, true, '?', 1, orm.QueryData{},
+		where)
 	sqlite_stmt_worker(db, query, orm.QueryData{}, where)!
 }