Posting Data to Controller Function that has no view

<?php echo $this->Form->create('user', array('action'=>'view','inputDefaults'=> array('div'=> false,'fieldset'=>false))); ?>

 <p><?php echo $this->Form->input('username');?></p>

 <?php echo $this->Form->postLink('Find User', array('action' => 'view',$this->request->data['user']['username']));?>

When I try to send this with a submit button I get an error msg that the view file does not exist. 

When I try sending as above with a post link I get "undefined variable or undefined index". 

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