Как добавить на главной странице панель меню слева (column_left)?

$data['column_left']= $this->load->controller('common/column_left');

<divclass="row"><?php echo $column_left;?>
<?php if($column_left && $column_right){?>
<?php $class ='col-sm-6';?>
<?php } elseif ($column_left || $column_right){?>
<?php $class ='col-sm-9';?>
<?php }else{?>
<?php $class ='col-sm-12';?>
<?php }?>

$data['column_left']= $this->load->controller('common/column_left');

<?php echo $header;?>
<div class="container">
<div class="row"><?php echo $column_left;?>
<?php if($column_left && $column_right){?>
<?php $class ='col-sm-6';?>
<?php } elseif ($column_left || $column_right){?>
<?php $class ='col-sm-9';?>
<?php }else{?>
<?php $class ='col-sm-12';?>
<?php }?>
<div id="content"class="<?php echo $class; ?>"><?php echo $content_top;?><?php echo $content_bottom;?></div>
<?php echo $column_right;?></div>
</div>
<?php echo $footer;?>