Customizing the validation error messages and fixed arguments

[mohammad-fouladgar]

Fixed missing arguments in the validationErrorMessages method. #261

We can have more control to compute the validation messages.

For example :

public function validationErrorMessages($root, $args, $context)
    {
        $inavlidEmail = array_get($args, 'test_with_rules_input_object.nest.email');

        return [
             'test.required' => 'A test is required.',
             'test_with_rules_input_object.nest.email.email' => 'Invalid your email : '.$inavlidEmail,
          ];
    }

@dmongeau Thank you !