orm/db.go

@@ -702,6 +702,13 @@ func (d *dbBase) Delete(q dbQuerier, mi *modelInfo, ind reflect.Value, tz *time.
 			return 0, err
 		}
 		if num > 0 {
+			if mi.fields.pk.auto {
+				if mi.fields.pk.fieldType&IsPositiveIntegerField > 0 {
+					ind.FieldByIndex(mi.fields.pk.fieldIndex).SetUint(0)
+				} else {
+					ind.FieldByIndex(mi.fields.pk.fieldIndex).SetInt(0)
+				}
+			}
 			err := d.deleteRels(q, mi, args, tz)
 			if err != nil {
 				return num, err

orm/orm.go

@@ -242,7 +242,13 @@ func (o *orm) Update(md interface{}, cols ...string) (int64, error) {
 func (o *orm) Delete(md interface{}, cols ...string) (int64, error) {
 	mi, ind := o.getMiInd(md, true)
 	num, err := o.alias.DbBaser.Delete(o.db, mi, ind, o.alias.TZ, cols)
-	return num, err
+	if err != nil {
+		return num, err
+	}
+	if num > 0 {
+		o.setPk(mi, ind, 0)
+	}
+	return num, nil
 }
 
 // create a models to models queryer