allow generic interface or real sql tx

boil/db.go

@@ -22,12 +22,20 @@ type Beginner interface {
 	Begin() (Transactor, error)
 }
 
+type SQLBeginner interface {
+	Begin() (*sql.Tx, error)
+}
+
 // Begin a transaction
 func Begin() (Transactor, error) {
 	creator, ok := currentDB.(Beginner)
 	if !ok {
+		creator2, ok2 := currentDB.(SQLBeginner)
+		if !ok2 {
 			panic("database does not support transactions")
 		}
+		return creator2.Begin()
+	}
 
 	return creator.Begin()
 }