//Controller

     public function comment_insert()
        {
            $this->load->helper('form');
            $this->load->library('form_validation');

            $this->form_validation->set_rules('name', 'Username', 'required');
            $this->form_validation->set_rules('text', 'Password', 'required');
            $this->form_validation->set_rules('email', 'Email', 'required');

            if($this->form_validation->run() == FALSE)
            {
                $this->load->view('form_view');
            }

            $this->db->insert('comments', $_POST);

            redirect('showmovies/'. $_POST['movies_id']);

        }

//View

        <?php echo validation_errors(); ?>
        <?= form_open('showmovies/comment_insert');?>
        <?= form_hidden('movies_id', $this->uri->segment(2)); ?>
        <br/>
         <div class="box">
            <h1>COMMENTS FORM :</h1>
            <label>
               <span>Full name</span>
               <?php echo form_error('name'); ?>
               <input type="text" class="input_text" name="name" id="name"/>
            </label>
             <label>
               <span>Email</span>
               <input type="text" class="input_text" name="email" id="email"/>
            </label>
             <label>
                <span>Subject</span>
                <input type="text" class="input_text" name="website" id="website"/>
            </label>
            <label>
                <span>Subject</span>
                <input type="text" class="input_text" name="date" id="date"/>
            </label>

             <label>
                <span>Message</span>
                <textarea class="message" name="text" id="comments"></textarea>
                <input type="submit" class="button" value="Submit Comment" />
             </label>
           </div>
    </form>