Laravel and angularjs form validation

I am new to angularjs and im playing around with it.

I'm stuck with one thing, in jQuery it's more easier to retrive the validation error messages json object from laravel, with angular i am able, but i am doing it this way and im sure there is a more effective way

My from

<div class="row">
    <div class="col-lg-8">
        <h5><?php echo  Lang::get('auth.signup') ?></h5>
        <div class="page-divider"></div>

        <form name="myForm" ng-controller="formController" ng-submit="signupPost()" class="form-horizontal" novalidate>

            <div class="form-group">
                <label for="first_name" class="col-lg-3 control-label"><?php echo Lang::get('form.first_name') ?></label>
                <div class="col-lg-8">
                  <input type="text" name="first_name" ng-model="formData.first_name" id="first_name" class="form-control input-small">
                  <span class="help-block" ng-show="errors['first_name'][0]">{{ errors['first_name'][0] }}</span>
                </div>
            </div>

            <div class="form-group">
                <label for="last_name" class="col-lg-3 control-label"><?php echo Lang::get('form.last_name') ?></label>
                <div class="col-lg-8">
                  <input type="text" name="last_name" ng-model="formData.last_name" id="last_name" class="form-control input-small">
                  <span class="help-block" ng-show="errors['last_name'][0]">{{ errors['last_name'][0] }}</span>
                </div>
            </div>

            <div class="form-group">
                <label for="username" class="col-lg-3 control-label"><?php echo Lang::get('form.username') ?></label>
                <div class="col-lg-8">
                  <input type="text" name="username" ng-model="formData.username" id="username" class="form-control input-small">
                  <span class="help-block" ng-show="errors['username'][0]">{{ errors['username'][0] }}</span>
                </div>
            </div>

            <input type="submit" value="<?php echo Lang::get('auth.signup') ?>" class="btn btn-primary">
        </form>
    </div>

</div> 

Angular controller

function formController($scope, $http) 
{
    $scope.formData = {};

    $scope.signupPost = function() {

        $http.post('signup', $scope.formData).success(function(data){

            if(data.msg == "success")
            {
                $location.path(data.redirect)
            }
            else
            {
                $scope.errors = data.error_msg;
            }
        });
    }
}

And the json what laravel retunrs if the form validation fails

 $messages = $val->messages();

            $data = array(
                'error_msg' => array(
                    'first_name'           => $messages->get('first_name'),
                    'last_name'            => $messages->get('last_name'),
                    'username'             => $messages->get('username'),
                    'profession'           => $messages->get('profession'),
                    'location'             => $messages->get('location'),
                    'email'                => $messages->get('email'),
                    'gender'               => $messages->get('gender'),
                    'password'             => $messages->get('password'),
                    'dob'                  => $messages->get('dob'),
                    'confirm_password'     => $messages->get('confirm_password'),
                ));
        }

        return Response::json($data);

I tried a few variations and currently it works like this in the form, show the form validation error messages if its set, this way errors['first_name'][0] for all fields.

My question is, is there a more effective way doing this? If someone could show me an example would be great

Thank you