php - Laravel 5.0 how to add a custom check before registration -

i working laravel project (laravel 5.0) , came across roadblock. trying make people email domain (let's @gmail.com example) register. have looked through of files registration , can't seem find add check.

the code simple:

if (substr($email,-10,10)!="@gmail.com") {      echo "we have issue here"; } 

now, preferably, wouldn't echo error, rather include in list of errors such when leave name field blank.

if know how this, please post code , file put said code in.

thanks again!

p.s. using of default authentication built laravel 5.0 registration , login.

first thing need create custom validator there several ways make custom validator in laravel prefer doing so:

1. firstly create custom validator class, serve place can register custom validators in future, mine located in app\customs - created customs directory doesn't exists.

   <?php namespace app\customs;  use illuminate\validation\validator;  class validators extends validator {        public function validategoodemail($attribute, $value, $parameters)       {          return (substr($value,-10,10)!="@gmail.com");           //return boolen - true or false       }  } 

nb: notice keyword in method namevalidate example validategoodemail, validatesex etc.

2. updated: next up, create validatorserviceprovider.php in app\providers , similar this:

   <?php namespace app\providers;  use illuminate\support\serviceprovider;  use validator; use app\customs\validators;  class validatorserviceprovider extends serviceprovider {        public function boot()       {            validator::resolver(function($translator, $data, $rules, $messages){                 return new validators($translator, $data, $rules, $messages);            });       }         public function register()       {        } } 

3. register newly created service provider in config/app.php under providers

    'app\providers\validatorserviceprovider', 

4. to use validator in default laravel registration process, pop open app\services\registrar.php , add this

nb: in laravel 5.2 checkout app\http\controllers\auth\authcontroller.php

use app\user; use validator; use illuminate\contracts\auth\registrar registrarcontract; use mail;  class registrar implements registrarcontract {      public function validator(array $data)     {         return validator::make($data, [             'name' => 'required|max:255',             'email' => 'required|good_email|email|max:255|unique:users',             'password' => 'required|confirmed|min:6',         ]);     } } 

updated: for quick fix, can skip step 1 - 4 , modify app\services\registrar.php so:

public function validator(array $data) {      \validator::extend('good_email', function($attribute, $value, $parameters){              return (substr($value,-10,10)!="@gmail.com");        });        return \validator::make($data, [             'name' => 'required|max:255',             'email' => 'required|good_email|email|max:255|unique:users',             'password' => 'required|confirmed|min:6',         ]);  } 

5. one last thing add good_email in resources\lang\en\validation.php

   'unique'               => 'the :attribute has been tak 'url'                  => 'the :attribute format invalid.',  ......                                                                'good_email'       => 'sorry :attribute must end "@gmail.com"',    ......