This PR was merged into the 2.2.x-dev branch.

Discussion
----------

Namespaces for Twig paths

Hello,

Recently, I had to use Symfony project's pieces of code in a Silex project, extending parent templates through submodules. These submodules, on which I had no control, used namespaced templates in their Twig files, such as:
```twig
{% import "@FooModule/macros.html.twig" as macros %}
```

____

### Problem
Silex cannot resolve namespaces by default, since you have to register paths as following:
```php
$app->register(new TwigServiceProvider(), array(
    'twig.path' => [
        '../app/Resources/views',
        '../common/foo-module/Resources/views'
    ]
));
```

### Temporary solution
What I had to do in order to get it working in the project was to "hack" the `\Twig_Loader_Filesystem` class (*PHP 7+*):
```php
$paths = [
    '../app/Resources/views',
    'FooModule' => '../common/foo-module/Resources/views',
];
$app->register(new TwigServiceProvider());
$app['twig.loader.filesystem'] = (function() use (&$paths): \Twig_Loader_Filesystem {
    $fileSystem = new \Twig_Loader_Filesystem();
    foreach ($paths as $namespace => $path) {
        if (is_string($namespace)) {
            $fileSystem->addPath($path, $namespace);
        } else {
            $fileSystem->addPath($path);
        }
    }

     return $fileSystem;
})();
```
This works fine. Other solutions crossed my minds, but this was one of the best alternatives I figured in order to use Twig namespaces in Silex.

### Code modification
Though this solution works, it may seem a bit dirty to have to do this in the project's code and not having the `TwigServiceProvider` providing this possibility. So I added this little piece of algorithm directly at the `\Twig_Loader_Filesystem` instanciation, which now looks like this as you will see in changes:
```php
$app['twig.loader.filesystem'] = function ($app) {
    if (!is_array($app['twig.path'])) {
        $app['twig.path'] = array($app['twig.path']);
    }

    $fileSystem = new \Twig_Loader_Filesystem();
    foreach ($app['twig.path'] as $namespace => $path) {
        if (is_string($namespace)) {
            $fileSystem->addPath($path, $namespace);
        } else {
            $fileSystem->addPath($path);
        }
    }

    return $fileSystem;
};
```
So you can simply register your `TwigServiceProvider` as following:
```php
$app->register(new TwigServiceProvider(), [
    'twig.path' => [
        '../app/Resources/views',
        'FooModule' => '../common/foo-module/Resources/views',
    ]
]);
```

___

English not being my native language, I hope I was clear enough. I stay around to answer any question about this potential contribution. (:

A

Commits
-------

d1f29680 [change] Namespaces for Twig paths

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

Refactoring tests

I've refactored some tests, using:
- `assertCount` instead of `count` function;
- `assertFalse` instead of strict comparison with `false` keyword;
- `assertArrayHasKey` instead of `isset` function.

Commits
-------

b163e443 Refactoring tests

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

Test against PHP 7.2

Commits
-------

9853996c Test against PHP 7.2

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

Swiftmailer SSL stream_context_options cannot be set #1582 :

Adding stream_context_options to the $app['swiftmailer.options']

Commits
-------

d622daa3 Swiftmailer SSL stream_context_options cannot be set #1582 : Adding stream_context_options to the $app['swiftmailer.options']

Adding stream_context_options to the $app['swiftmailer.options']

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

A minor typo

Hi,

I found a minor typo in this particular file. Kindly please check it and merge the pull request if you find it valid.

Thanks!

Commits
-------

8fd2b2bf Update organizing_controllers.rst

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

Add undocumented available parameter: base_path

Commits
-------

52248599 Add not documented available parameter: base_path

This PR was squashed before being merged into the 2.2.x-dev branch (closes #1549).

Discussion
----------

Fix wrong namespace forward/backward slash

Commits
-------

e7771477 Fix wrong namespace forward/backward slash

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

Handle the ControllerResolverInterface::getArguments deprecation in tests

Fixes deprecation notices/failures due to the deprecation of `ControllerResolverInterface::getArguments()`:

1. `Silex\ControllerResolver` [is not used by Silex](https://github.com/silexphp/Silex/blob/master/src/Silex/Provider/HttpKernelServiceProvider.php#L37) when using HttpKernel >= 3.1.0, so I skipped the only test present in `ControllerResolverTest` with recent versions, as it failed when testing against HttpKernel v4  (master).

2. `ServiceControllerResolverTest::testShouldDelegateGetArguments()` only asserts that the deprecated method is called, so added a `@group legacy` to handle the notice, and skipped the test with v4 to prevent a warning (PHPUnit complains when you mock a non-existent method).

Commits
-------

c020cec4 Correctly handle the ControllerResolverInterface::getArguments deprecation in tests

minor #1543 The general case is that 'app' may be located anywhere, accessible through an Alias. (PABourdin)

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

The general case is that 'app' may be located anywhere, accessible through an Alias.

Commits
-------

c5826fdf The general case is that 'app' may be located anywhere, accessible through an Alias.

This PR was merged into the 2.2.x-dev branch.

Discussion
----------

FormTrait: Fixed unused imports

Commits
-------

b51414f8 Fix unused components

This PR was merged into the 2.1.x-dev branch.

Discussion
----------

Fixed translator.resources definition

`translator.resource` is wrongly registered as a protected closure in `TranslationServiceProvider` (it was originally added correctly in dd270386, but changed in 48a3fdc4).

That makes a test fail with Pimple 3.2.1 due to the silexphp/Pimple#190 fix as `translator.resource` can't be extended.

Commits
-------

c5dc42a7 Fixed translator.resources definition

This PR was merged into the 2.1.x-dev branch.

Discussion
----------

Update documentation to add cache explaination

This updates the documentation explaining how to setup any cache that implements the Doctrine interface. As the Symfony documentation don't clearly shows how to do this, I intend to add it here.

Commits
-------

2e0f7d38 Update documentation to add cache explaination

This PR was merged into the 2.1.x-dev branch.

Discussion
----------

Error using EsiFragment with provider and twig functions

Trying to use twig functions "controller" and "render_esi" like [Symfony esi reference](http://symfony.com/doc/current/http_cache/esi.html) , i've noticed the following error:
An exception has been thrown during the rendering of a template ("You must use a URI when using the ESI rendering strategy or set a URL signer.").

It's the lack of a UriSigner on the constructor.

Commits
-------

c6bbc48b Update HttpFragmentServiceProvider.php

This PR was merged into the 2.1.x-dev branch.

Discussion
----------

add json manifest version strategy support

Commits
-------

65382f4c add json manifest version strategy support

This PR was merged into the 2.1.x-dev branch.

Discussion
----------

RedirectableUrlMatcher needs to return a proper array with the _route parameter

Symfony's HttpUtils's checkRequestPath() expects RedirectableUrlMatcher to return an array with '_route'. This throws a notice `Undefined index: _route`:

```
        $coll = new RouteCollection();
        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https')));
        $matcher = new RedirectableUrlMatcher($coll, new RequestContext());
        $httpUtils = new HttpUtils(null, $matcher);
        $request = Request::create('http://example.com/foo');
        $httpUtils->checkRequestPath($request, 'foo');
```

It's an issue with my app although I haven't yet taken the time to make a simplified app to show the issue besides the above.

Commits
-------

e6d41b8d RedirectableUrlMatcher needs to return a proper array with the _route parameter

This PR was squashed before being merged into the 2.1.x-dev branch (closes #1529).

Discussion
----------

Added test of FormTrait::namedForm()

I did not see the test of FormTrait::namedForm(), so I created it.

Commits
-------

32640626 Added test of FormTrait::namedForm()