Added nullable rule because for exampe I pass a 'email' rule to a field an the field not exists the valdiator rejects the field and saying that the fields is not a 'email' valid. With nullable rule if the field not exists and has 'nullable' rule the validator will not validate the field with the others rules and will passed.
Added nullable rule because for exampe I pass a 'email' rule to a field an the field not exists the valdiator rejects the field and saying that the fields is not a 'email' valid. With nullable rule if the field not exists and has 'nullable' rule the validator will not validate the field with the others rules and will passed.