Fixed some errors to get keys example working

Author: erkattak

application/controllers/api/key.php

@@ -198,7 +198,7 @@ private function _generate_key()
 
 		do
 		{
-			$salt = dohash(time().mt_rand());
+			$salt = do_hash(time().mt_rand());
 			$new_key = substr($salt, 0, config_item('rest_key_length'));
 		}
 
@@ -214,14 +214,14 @@ private function _generate_key()
 
 	private function _get_key($key)
 	{
-		return $this->rest->db->where('key', $key)->get(config_item('rest_keys_table'))->row();
+		return $this->db->where('key', $key)->get(config_item('rest_keys_table'))->row();
 	}
 
 	// --------------------------------------------------------------------
 
 	private function _key_exists($key)
 	{
-		return $this->rest->db->where('key', $key)->count_all_results(config_item('rest_keys_table')) > 0;
+		return $this->db->where('key', $key)->count_all_results(config_item('rest_keys_table')) > 0;
 	}
 
 	// --------------------------------------------------------------------
@@ -232,20 +232,20 @@ private function _insert_key($key, $data)
 		$data['key'] = $key;
 		$data['date_created'] = function_exists('now') ? now() : time();
 
-		return $this->rest->db->set($data)->insert(config_item('rest_keys_table'));
+		return $this->db->set($data)->insert(config_item('rest_keys_table'));
 	}
 
 	// --------------------------------------------------------------------
 
 	private function _update_key($key, $data)
 	{
-		return $this->rest->db->where('key', $key)->update(config_item('rest_keys_table'), $data);
+		return $this->db->where('key', $key)->update(config_item('rest_keys_table'), $data);
 	}
 
 	// --------------------------------------------------------------------
 
 	private function _delete_key($key)
 	{
-		return $this->rest->db->where('key', $key)->delete(config_item('rest_keys_table'));
+		return $this->db->where('key', $key)->delete(config_item('rest_keys_table'));
 	}
 }