This is how I do it:
I use /pictures/download instead of /images/display but that should be
irrelevant. You can make adjustments where necessary.
In my Pictures controller I have:
function download($id)
{
$this->layout = 'image';
$this->set('pictures', $this->Picture->read(null, $id));
}
My download.thtml view looks like this:
<?php
header("Content-length:".$pictures['Picture']['filesize']);
header("Content-type: ".$pictures['Picture']['mime']);
header("Content-Disposition: attachment;
filename=".$pictures['Picture']['filename'].".".$pictures['Picture']['ext']);
echo $pictures['Picture']['content'];
?>
And lastly my image.thtml layout is a one liner that looks like this:
<?php echo $content_for_layout;?>
Once I got all that working, I can use the image in a view like this:
$html->image('/pictures/download/'.$picture['Pictures']['id'],array('alt'=>$picture['Pictures']['filename'])
Hope this helps. If I need to clarify anything just let me know.
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