How to update specific image if source has changed?

[tburny]

I'm using Liip to transform profile pictures to different sizes and I store them on the filesystem using the default configuration.

I cannot find a way to delete the old cached image, so it gets re-generated.
The goal is to have a filter name and a webpath of the original image file to delete the cached version(s) of that file.
I don't want to wipe the whole cache just because someone changed his profile picture.

My code so far:

                if (!empty($oldFile) && file_exists($oldFile)) {
                    unlink($oldFile);
                    $filter = 'profile_picture';
                    // Returns an image or a response, both unusable for me...
                    // $resolvedPath =  $cacheManager->resolve($this->getRequest(), $oldWebPath, $filter);
                    $cacheManager->remove($oldWebPath, $filter);
                }

How can I get this solved?

[havvg]

Your $cacheManager->remove($oldWebPath, $filter); should do the trick. At least that's what I'm doing and it works fine.

[tburny]

Hmm. I cannot get this to work :(
I tried to make the paths relative to the browser root or using relative paths, the cached files still are not deleted.
The original files are uploaded to /web/uploads/avatars. I defined a filter named 'user_profile' and the target path thus is /web/cache/profile_picture/uploads/avatars.

The filter configuration:

liip_imagine:
    filter_sets:
        profile_picture:
            quality: 85
            filters:
                thumbnail: { size: [120, 120], mode: inbound }

$oldWebPath is a relative url, namely e.g. 'uploads/avatars/16.jpeg'. In the template, I use
{{ user.avatar.webpath | imagine_filter('profile_picture',true)}}
to create a picture with the user_profile definition.

I use the current dev-master version of Liip..Bundle, Imagine 0.4.0 with composer and Symfony 2.1

[tburny]

I found the solution, we have a little bug/non-expected behaviour here.
If CacheManager::resolve() isn't called before CacheManager::remove(), the cached image is not removed at all.

Not working:

        /** @var $cacheManager CacheManager */
        $cacheManager = $this->get('liip_imagine.cache.manager');
        // $cacheManager->resolve($this->getRequest(),$pngPath,$filter);
        $cacheManager->remove($pngPath, $filter);

Now uncomment the resolve line, the file gets deleted.

        /** @var $cacheManager CacheManager */
        $cacheManager = $this->get('liip_imagine.cache.manager');
        $cacheManager->resolve($this->getRequest(),$pngPath,$filter);
        $cacheManager->remove($pngPath, $filter);

where $pngPath is the path of the original image relative to the webroot, e.g. 'uploads/avatars/16.png'

[lsmith77]

sorry .. i do not have time to dig into this atm. would be great if you could look into figuring this out. not sure if we need to add a resolve() call in remove() ..

[havvg]

I planned to write tests for most parts of this bundle over this weekend, hopefully I will discover the missing pieces and/or verify existing stuff :)

[lsmith77]

wow! that would be sooooo awesome.

[havvg]

The correct behavior is to work with the targetPath, which is the resolved one.

$cacheManager = $this->get('liip_imagine.cache.manager');
$cacheManager->resolve($this->getRequest(), $pngPath, $filter);
$cacheManager->remove($pngPath, $filter);