Rendering images from a controller

[demiankatz]

My application has a controller which renders images on the fly.  I don't see an obvious, pre-existing way to do this with the ZF2 view functionality.

Do I need to build an ImageRenderer and ImageStrategy in order to make this happen, or is there a simpler way?  It seems like a lot of infrastructure to build just to set some HTTP headers and dump out a blob of image data.

If there's a simple solution, I'd love to hear about it.  If not, I'll be happy to share whatever I end up building; this seems like a fairly common use case that may be useful to have supported out of the box.

- Demian

[Jurian Sluiman-3]

2012/7/13 Demian Katz <[hidden email]>

My application has a controller which renders images on the fly.  I don't see an obvious, pre-existing way to do this with the ZF2 view functionality.

Do I need to build an ImageRenderer and ImageStrategy in order to make this happen, or is there a simpler way?  It seems like a lot of infrastructure to build just to set some HTTP headers and dump out a blob of image data.

If there's a simple solution, I'd love to hear about it.  If not, I'll be happy to share whatever I end up building; this seems like a fairly common use case that may be useful to have supported out of the box.

- Demian

If you return a Response object from your controller, no view rendering is involved. For example:

public function ImageAction()

{

    $image = $this->doSomeRendering();

    $response = $this->getResponse();

    $response->setContent($image);

    return $response;

}

You might want to set additional headers before the response is returned. You can do this by:

$headers = $response->getHeaders();

$headers->addHeaderLine('Some-Header', 'value-here');

--
Jurian Sluiman