VIEW:
<div id="avatar_gallery">
        <h1>Avatars Gallery</h1>

        {form_open("avatar_gallery/submit")}
            <div id="avatar_box_gallery">
                <input type="text" name="mess" >
                <input type="submit" id="avatar_button_gallery" name="submit" value="Change Avatar" />
            </div>
        {form_close()}
</div>

CONTROLLER:
<?php

class avatar_gallery extends MX_Controller
{
	public function __construct()
	{
		parent::__construct();
		Modules::run('login/is_logged_in');
		$this->load->model('avatar_gallery_model');
	}

	public function index()
	{
		$data = array(
					"user_id" => $this->user->getId(),
					"status" => $this->user->getAccountStatus(),
					"rows" => $this->avatar_gallery_model->view(),
					"text" => htmlspecialchars($this->input->post('mess')),
				);

				// Load the view and pass the data
				$content = $this->template->loadPage("avatar_gallery.tpl", $data);

				// Put the view in a nice content box with a headline
				$box = $this->template->box("Account Panel", $content);

				// Output the view
				$this->template->view($box, "modules/ucp/css/avatar.css");
	}

   	public function submit()
    {
		$u_Data = array(
				'avatar' => htmlspecialchars($this->input->post('mess')),
			);

    	$this->avatar_gallery_model->get($u_Data);

		$content = $this->template->loadPage("sent.tpl", $arrData);
		$box = $this->template->box("Account Panel", $content);
		$this->template->view($box, "modules/ucp/css/avatar.css");
    }
}

MODEL:
<?php
class avatar_gallery_model extends CI_Model
{
 	public function get($u_Data)
 	{
 		$this->db->update('account_data', $u_Data, array('id' => $this->user->getId()));
 	}

 	public function view()
	{
 		$query = $this->db->query("SELECT * FROM account_data ORDER BY id DESC");

 		if($query->num_rows())
		{
			$row = $query->result_array();

			return $row;
		}
		else
		{
			return false;
		}
	}
}