LiipImagineBundle

This bundle is a fork of AvalancheImagineBundle which provides easy image
manipulation support for Symfony2. The goal of the fork is to make the
code more extensible and as a result applicable for more use cases.

For more details on the reason for the fork see:
https://github.com/avalanche123/AvalancheImagineBundle/pull/25

For example with this bundle the following is possible:

<img src="{{ '/relative/path/to/image.jpg' | imagine_filter('thumbnail') }}" />

This will perform the transformation called thumbnail, which you can define
to do a number of different things, such as resizing, cropping, drawing,
masking, etc.

This bundle integrates the standalone PHP "Imagine library".

Installation

In case you are not sure how to install this bundle, see the installation instructions.

Configuration

After installing the bundle, make sure you add this route to your routing:

# app/config/routing.yml

_imagine:
    resource: .
    type:     imagine

For a complete configuration drill-down see the respective chapter in the documentation.

Basic Usage

This bundle works by configuring a set of filters and then applying those
filters to images inside a template So, start by creating some sort of filter
that you need to apply somewhere in your application. For example, suppose
you want to thumbnail an image to a size of 120x90 pixels:

# app/config/config.yml

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

You've now defined a filter set called my_thumb that performs a thumbnail transformation.
We'll learn more about available transformations later, but for now, this
new filter can be used immediately in a template:

<img src="{{ '/relative/path/to/image.jpg' | imagine_filter('my_thumb') }}" />

Or if you're using PHP templates:

<img src="<?php $this['imagine']->filter('/relative/path/to/image.jpg', 'my_thumb') ?>" />

Behind the scenes, the bundles applies the filter(s) to the image on the first
request and then caches the image to a similar path. On the next request,
the cached image would be served directly from the file system.

In this example, the final rendered path would be something like
/media/cache/my_thumb/relative/path/to/image.jpg. This is where Imagine
would save the filtered image file.

In order to get an absolute path to the image add another parameter with the value true:

<img src="{{ '/relative/path/to/image.jpg' | imagine_filter('my_thumb', true) }}" />

Or if you're using PHP templates:

<img src="<?php $this['imagine']->filter('/relative/path/to/image.jpg', 'my_thumb', true) ?>" />

Note: Using the dev environment you might find that the images are not properly rendered when
using the template helper. This is likely caused by having intercept_redirect enabled in your
application configuration. To ensure that the images are rendered disable this option:

web_profiler:
    intercept_redirects: false

Filters

The LiipImagineBundle provides a set of built-in filters.
You may easily roll your own filter, see the filters chapter in the documentation.

Using the controller as a service

If you need to use the filters in a controller, you can just load ImagineController.php controller as a service and handle the response:

class MyController extends Controller
{
    public function indexAction()
    {
        // RedirectResponse object
        $imagemanagerResponse = $this->container
            ->get('liip_imagine.controller')
                ->filterAction(
                    $this->getRequest(),
                    'uploads/foo.jpg',      // original image you want to apply a filter to
                    'my_thumb'              // filter defined in config.yml
        );

        // string to put directly in the "src" of the tag <img>
        $cacheManager = $this->container->get('liip_imagine.cache.manager');
        $srcPath = $cacheManager->getBrowserPath('uploads/foo.jpg', 'my_thumb');

        // ..
    }
}

In case you need to add more logic the recommended solution is to either extend ImagineController.php controller or take the code from that controller as a basis for your own controller.

Outside the web root

When your setup requires your source images to live outside the web root, or if that's just the way you roll,
you have to set the bundle's parameter data_root in the config.yml with the absolute path where your source images are
located:

liip_imagine:
    data_root: /path/to/source/images/dir

Afterwards, you need to grant read access on Apache to access the images source directory. For achieving it you have
to add the following directive to your project's vhost file:

<VirtualHost *:80>
    <!-- Rest of directives like DocumentRoot or ServerName -->

    Alias /FavouriteAlias /path/to/source/images/dir
    <Directory "/path/to/source/images/dir">
        AllowOverride None
        Allow form All
    </Directory>
</VirtualHost>

Another way would be placing the directive in a separate file living inside your project. For instance,
you can create a file app/config/apache/photos.xml and add to the project's vhost the following directive:

<VirtualHost *:80>
    <!-- Rest of directives like DocumentRoot or ServerName -->

    Include "/path/to/your/project/app/config/apache/photos.xml"
</VirtualHost>

This way you keep the file along with your code and you are able to change your files directory access easily or create
different environment-dependant configuration files.

Either way, once you have granted access on Apache to read the data_root files, the relative path of an image with this
absolute path /path/to/source/images/dir/logo.png must be /FavouriteAlias/logo.png to be readable.

Documentation

For more detailed information about the features of this bundle, please refer to the documentation.