Monday, 16 April 2018

Live Email Availability in Laravel using Ajax



In this tutorial, We will learn implement live email available or not for registration using Ajax Jquery Mysql in Laravel application. This is a most common and very popular feature in most of the web application.

While register a new user account then user enters their email address fields then an Ajax call will request send to Laravel controller for check email availability status of the particular email address which user has enter. In Laravel Controller it will matches the user email against the mysql database and if email already register then it will return email already register and register button will be disabled and if email available for registration then register button will be enabled.





For this first we want to make database connection in going to .env file and config/database.php file. After this we have make one EmailAvailable.php controller by write following command in command prompt.


php artisan make:controller EmailAvailable


Under this controller we have make index() method for load view file on browser. For this we have write following code.


<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class EmailAvailable extends Controller
{
    function index()
    {
     return view('email_available');
    }

}

?>


In email_available.php we have define email, password and register html field. And Below this we have write jquery code for check email in proper format and also write Ajax request for check email already available or not in our database. It will send Ajax request to check() method of EmailAvailable controller.


<!DOCTYPE html>
<html>
 <head>
  <title>Live Email Availability in Laravel using Ajax</title>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  <style type="text/css">
   .box{
    width:600px;
    margin:0 auto;
    border:1px solid #ccc;
   }
   .has-error
   {
    border-color:#cc0000;
    background-color:#ffff99;
   }
  </style>
 </head>
 <body>
  <br />
  <div class="container box">
   <h3 align="center">Live Email Availability in Laravel using Ajax</h3><br />
   
   <div class="form-group">
    <label>Enter Your Email</label>
    <input type="text" name="email" id="email" class="form-control input-lg" />
    <span id="error_email"></span>
   </div>
   <div class="form-group">
    <label>Enter Your Password</label>
    <input type="password" name="password" id="password" class="form-control input-lg" />
   </div>
   <div class="form-group" align="center">
    <button type="button" name="register" id="register" class="btn btn-info btn-lg">Register</button>
   </div>
   {{ csrf_field() }}
   
   <br />
   <br />
  </div>
 </body>
</html>

<script>
$(document).ready(function(){

 $('#email').blur(function(){
  var error_email = '';
  var email = $('#email').val();
  var _token = $('input[name="_token"]').val();
  var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
  if(!filter.test(email))
  {    
   $('#error_email').html('<label class="text-danger">Invalid Email</label>');
   $('#email').addClass('has-error');
   $('#register').attr('disabled', 'disabled');
  }
  else
  {
   $.ajax({
    url:"{{ route('email_available.check') }}",
    method:"POST",
    data:{email:email, _token:_token},
    success:function(result)
    {
     if(result == 'unique')
     {
      $('#error_email').html('<label class="text-success">Email Available</label>');
      $('#email').removeClass('has-error');
      $('#register').attr('disabled', false);
     }
     else
     {
      $('#error_email').html('<label class="text-danger">Email not Available</label>');
      $('#email').addClass('has-error');
      $('#register').attr('disabled', 'disabled');
     }
    }
   })
  }
 });
 
});
</script>


For received Ajax request we have go EmailAvailable.php controller and under this we have create check method. This method will check particular email is available or not in mysql database. For this we have use Laravel DB class.


<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class EmailAvailable extends Controller
{
    function index()
    {
     return view('email_available');
    }

    function check(Request $request)
    {
     if($request->get('email'))
     {
      $email = $request->get('email');
      $data = DB::table("tbl_login")
       ->where('email', $email)
       ->count();
      if($data > 0)
      {
       echo 'not_unique';
      }
      else
      {
       echo 'unique';
      }
     }
    }

}
?>


Lastly we want to set route for both method of EmailAvailable controller. For this we have to go to routes/web.php file.


<?php


Route::get('/', function () {
    return view('welcome');
});

Route::get('/email_available', 'EmailAvailable@index');

Route::post('/email_available/check', 'EmailAvailable@check')->name('email_available.check');





Database



--
-- Database: `testing`
--

-- --------------------------------------------------------

--
-- Table structure for table `tbl_login`
--

CREATE TABLE `tbl_login` (
  `id` int(11) NOT NULL,
  `first_name` varchar(100) NOT NULL,
  `last_name` varchar(100) NOT NULL,
  `gender` varchar(30) NOT NULL,
  `email` varchar(200) NOT NULL,
  `password` varchar(200) NOT NULL,
  `address` text NOT NULL,
  `mobile_no` varchar(15) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

--
-- Indexes for dumped tables
--

--
-- Indexes for table `tbl_login`
--
ALTER TABLE `tbl_login`
  ADD PRIMARY KEY (`id`);

--
-- AUTO_INCREMENT for dumped tables
--

--
-- AUTO_INCREMENT for table `tbl_login`
--
ALTER TABLE `tbl_login`
  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
COMMIT;





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