Added unique username and unique email validators to custom validatio…

…n library, so they actually run...

app/libraries/MY_Form_validation.php

@@ -0,0 +1,31 @@
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+
+class MY_Form_validation extends CI_Form_validation {
+	public function __construct() {
+		parent::__construct();
+
+		$this->CI =& get_instance();
+	}
+
+    function unique_email($email) {
+	    $this->CI->load->model('users/user_model');
+      if ($this->CI->user_model->unique_email($email)) {		
+        return TRUE;
+      }
+      else {
+        $this->CI->form_validation->set_message('unique_email', 'The Email you have selected is unavailable.');
+        return FALSE;
+      }
+    }
+
+    function unique_username($username) {
+	    $this->CI->load->model('users/user_model');
+      if ($this->CI->user_model->unique_username($username)) {
+        return TRUE;
+      }
+      else {
+        $this->CI->form_validation->set_message('unique_username', 'The Username you have selected is unavailable.');
+        return FALSE;
+      }
+    }
+}