php - Codeigniter no data sent posted on form -

my login system stopped working, can't fix it, i've been looking , seems data doesn't posted can't find problem.

this view:

    <?php if(! is_null($err)) echo "<div class=\"alert alert-danger\">".$err."</div>";?>     <form class="form-signin" action="<?php echo site_url("user/validate"); ?>" method="post">     <h2 class="form-signin-heading">please sign in</h2>     <label for="email" class="sr-only">email address</label>     <input type="email" name="email" class="form-control" placeholder="email address" required autofocus>     <br/>     <label for="password" class="sr-only">password</label>     <input type="password" name="password" class="form-control" placeholder="password" required>     <br/>      <button class="btn btn-lg btn-primary btn-block" name="submit" type="submit">sign in</button>   </form> </div> 

this my validate function inside user controller:

public function validate() {     $email = $this->input->post('email');     $password = $this->input->post('password');     // load model     echo "$email , $password sent";     print_r($this->input->post());     exit();     $this->load->model('user_model');     // validate user's login details     $result = $this->user_model->validate($email, $password);     // verify result     if($result == 0){         // if user did not validate, show them login page again         $err = 'invalid email and/or password.';         $this->login($err);     }else{         // if user did validate send him homepage after setting credentials         $this->session->set_userdata($result);         redirect(site_url("/index/index"));     } } 

the echo , print_r show no data posted.

after research found out problem should .htaccess file, current .htaccess:

rewriteengine on rewriterule ^(application) - [f,l]  rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewriterule .* index.php/$0 [pt,l] 

but it's not working.

1. you have exit(); in validate function comment

2. try : if(!empty( $err ))

3. try : base_url("index.php/user/validate");

4. try : load model inside

   public function __construct()

   not inside of

   public function validate()