if polymorphic, _ := field.TagSettingsGet("POLYMORPHIC"); polymorphic != "" {
                                        // Dog has many toys, tag polymorphic is Owner, then associationType is Owner
                                        // Toy use OwnerID, OwnerType ('dogs') as foreign key
                                        if polymorphicType := getForeignField(polymorphic+"Type", toFields); polymorphicType != nil {
                                            associationType = polymorphic