open a pdf on select cakephp, open a pdf on select cakephp

I am trying to open pdf files located on my localhost under files folder using cakephp form select element


echo "<div id=vac>";
echo $this->Form->create('Vacancy',array('target'=>'_blank'));
echo $this->Form->input('New Vacancy', array('options' => $Vacancy,'empty' => 'Select','between'=>'<br/><br/>','onChange'=>'javascript:this.form.submit()','url' =>'/files/emply'));
echo "</div>";



The vacancy database has the following entries:
id name Location.

I wish to open the file stored at location for a particular entry.

Q1: How can I specify the value of location in select field?
Q2: How to access the pdf at that location?

In my controller I am passing


$this->set('Vacancy',$vacancy->find('list',array('fields' => array('id', 'name','location'))));

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