LiipImagineBundle: Thumbnails doesn't appear and are not created

Hello,

I have this problem on Symfony v2.1.11. It seems other people have this problem.

To verify it, I installed a clean version of Symfony v2.3.1 in new folder with: php composer.phar create-project symfony/framework-standard-edition path/ 2.3.1

I made configuration, and verified it with config.php, it’s ok.

I installed LiipImagnineBundle with composer adding in composer.json:

"imagine/Imagine": "0.4.*",
"liip/imagine-bundle": "dev-master"

composer update works

I enabled LiipImagineBundle in app/AppKernel.php with: new Liip\ImagineBundle\LiipImagineBundle(),

I configured LiipImagineBundle route in app/config/routing.yml with:

_imagine:
    resource: .
    type:     imagine

And I configured LiipImagineBundle in app/config/config.yml with:

liip_imagine:
    filter_sets:
        my_thumb:
            quality: 75
            filters:
                thumbnail: { size: [120, 90], mode: outbound }

To make a simple test I add this line in the welcome page /src/Acme/DemoBundle/Resources/views/Welcome/index.html.twig:

<img src="{{ 'bundles/acmedemo/images/welcome-quick-tour.gif' | imagine_filter('my_thumb') }}" />

but when I go to the page the thumnail doesn’t appear. When I verify the HTML code in browser I have this: <img src="/symfony-test/web/app_dev.php/media/cache/my_thumb/bundles/acmedemo/images/welcome-quick-tour.gif">

About the path, I already tried with or without parentheses and with or without asset() : same problem. I didn’t find interesting topics about this on stackoverflow.

I use PHP 5.4.9 on Ubuntu.

Any idea ? Many thanks.