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Web Path Resolver

This cache resolver (WebPathResolver) enables cache resolution for local, web-path-based setups. This means images will be cached on your local filesystem, within the web path of your Symfony application.

The resulting web path is computed by taking a number of factors into account, including the request context, as provided by the Symfony HTTP kernel.

Tip

The request context is most notably used to determine the HTTP scheme used for the final URL. If you use a proxy to offload TLS traffic decryption and need the resolver to generate secure URLs, you will need to appropriately configure Symfony's trusted proxies. If you utilize embedded controllers in your templates, you must add localhost to your trusted proxies configuration.

Also, the request context is used to determine the port of the resulting URL, should it differ from the standard HTTP/HTTPS (80/443) ports.

Configuration

liip_imagine:
    resolvers:
       profile_photos:
          web_path:
            # use %kernel.project_dir%/web for Symfony prior to 4.0.0
            web_root: "%kernel.project_dir%/public"
            cache_prefix: "media/cache"

There are several configuration options available:

  • web_root - must be the absolute path to you application's web root. This is used to determine where to put generated image files, so that apache will pick them up before handing the request to Symfony next time they are requested. The default value ends with web for Symfony prior to version 4.0.0. Default value: %kernel.project_dir%/(public|web)
  • cache_prefix - this is also used in the path for image generation, so as to not clutter your web root with cached images. For example by default, the images would be written to the web/media/cache/ directory. Default value: /media/cache

Usage

After configuring WebPathResolver, you can set it as the default cache resolver for LiipImagineBundle using the following configuration.

# app/config/config.yml

liip_imagine:
    cache: profile_photos

Usage on a Specific Filter

Alternatively, you can set WebPathResolver as the cache resolver for a specific filter set using the following configuration.

# app/config/config.yml

liip_imagine:
    filter_sets:
        cache: ~
        my_thumb:
            cache: profile_photos
            filters:
                # the filter list