Added 'random' as an order_by() option in Active Record.
diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php
index cb134ea..e8059ab 100644
--- a/system/database/DB_active_rec.php
+++ b/system/database/DB_active_rec.php
@@ -450,7 +450,12 @@
 	 */

 	function order_by($orderby, $direction = '')

 	{

-		if (trim($direction) != '')

+		if (strtolower($direction) == 'random')

+		{

+			$orderby = ''; // Random results want or don't need a field name

+			$direction = $this->_random_keyword;

+		}

+		elseif (trim($direction) != '')

 		{

 			$direction = (in_array(strtoupper(trim($direction)), array('ASC', 'DESC'), TRUE)) ? ' '.$direction : ' ASC';

 		}

@@ -458,6 +463,7 @@
 		$this->ar_orderby[] = $orderby.$direction;

 		return $this;

 	}

+	

 	// --------------------------------------------------------------------

 

 	/**

@@ -469,6 +475,7 @@
 	{

 		return $this->order_by($orderby, $direction);

 	}

+	

 	// --------------------------------------------------------------------

 

 	/**

@@ -583,7 +590,7 @@
 			$this->from($table);

 		}

 		

-		$sql = $this->_compile_select($this->count_string);

+		$sql = $this->_compile_select($this->_count_string);

 

 		$query = $this->query($sql);

 		$this->_reset_select();