Prevent the putting in cache of a file

[renaud2263]

Hi All,

 

I develop my own BO module with a stat graph.

I need this graph to be generated each refresh of the page. My graph function generate a PNG file.

How I can prevent this image to be in the cache ?

 

Thanks for help.

[rocky]

Add the image update time after the image URL in a query string. That's how PrestaShop does it on line 1617 of classes/controller/FrontController.php:

            $logo = $this->context->link->getMediaLink(_PS_IMG_.Configuration::get('PS_LOGO_MOBILE').'?'.Configuration::get('PS_IMG_UPDATE_TIME'));