テーブルのカラム名を取得
$this->Model->getColumnTypes();

Controller
$columnTypes=$this->SystemTest->getColumnTypes();
$columnNames=array_keys($columnTypes);
$this->set('columnTypes', $columnTypes);
$this->set('columnNames', $columnNames);

View
columnTypes<br/>
<?php
$tmp=var_export($columnTypes,true);
echo str_replace("\n", "<br/>", $tmp);
?>
<br/><br/>
columnNames<br/>
<?php
$tmp=var_export($columnNames,true);
echo str_replace("\n", "<br/>", $tmp);
?>

Sample