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This PR was merged into the master branch. Discussion ---------- [2.3] [WIP] Synchronized services... | Q | A | ------------- | --- | Bug fix? | no | New feature? | no | BC breaks? | no | Deprecations? | no | Tests pass? | yes | Fixed tickets | #5300, #6756 | License | MIT | Doc PR | symfony/symfony-docs#2343 Todo: - [x] update documentation - [x] find a better name than contagious (synchronized)? refs #6932, refs #5012 This PR is a proof of concept that tries to find a solution for some problems we have with scopes and services depending on scoped services (mostly the request service in Symfony). Basically, whenever you want to inject the Request into a service, you have two possibilities: * put your own service into the request scope (a new service will be created whenever a sub-request is run, and the service is not available outside the request scope); * set the request service reference as non-strict (your service is always available but the request you have depends on when the service is created the first time). This PR addresses this issue by allowing to use the second option but you service still always has the right Request service (see below for a longer explanation on how it works). There is another issue that this PR fixes: edge cases and weird behaviors. There are several bug reports about some weird behaviors, and most of the time, this is related to the sub-requests. That's because the Request is injected into several Symfony objects without being updated correctly when leaving the request scope. Let me explain that: when a listener for instance needs the Request object, it can listen to the `kernel.request` event and store the request somewhere. So, whenever you enter a sub-request, the listener will get the new one. But when the sub-request ends, the listener has no way to know that it needs to reset the request to the master one. In practice, that's not really an issue, but let me show you an example of this issue in practice: * You have a controller that is called with the English locale; * The controller (probably via a template) renders a sub-request that uses the French locale; * After the rendering, and from the controller, you try to generate a URL. Which locale the router will use? Yes, the French locale, which is wrong. To fix these issues, this PR introduces a new notion in the DIC: synchronized services. When a service is marked as synchronized, all method calls involving this service will be called each time this service is set. When in a scope, methods are also called to restore the previous version of the service when the scope leaves. If you have a look at the router or the locale listener, you will see that there is now a `setRequest` method that will called whenever the request service changes (because the `Container::set()` method is called or because the service is changed by a scope change). Commits ------- |
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| src/Symfony | ||
| .editorconfig | ||
| .gitignore | ||
| .travis.yml | ||
| autoload.php.dist | ||
| CHANGELOG-2.0.md | ||
| CHANGELOG-2.1.md | ||
| CHANGELOG-2.2.md | ||
| composer.json | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS.md | ||
| LICENSE | ||
| phpunit.xml.dist | ||
| README.md | ||
| UPGRADE-2.1.md | ||
| UPGRADE-2.2.md | ||
| UPGRADE-3.0.md | ||
README
What is Symfony2?
Symfony2 is a PHP 5.3 full-stack web framework. It is written with speed and flexibility in mind. It allows developers to build better and easy to maintain websites with PHP.
Symfony can be used to develop all kind of websites, from your personal blog to high traffic ones like Dailymotion or Yahoo! Answers.
Requirements
Symfony2 is only supported on PHP 5.3.3 and up.
Be warned that PHP versions before 5.3.8 are known to be buggy and might not work for you:
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before PHP 5.3.4, if you get "Notice: Trying to get property of non-object", you've hit a known PHP bug (see https://bugs.php.net/bug.php?id=52083 and https://bugs.php.net/bug.php?id=50027);
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before PHP 5.3.8, if you get an error involving annotations, you've hit a known PHP bug (see https://bugs.php.net/bug.php?id=55156).
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PHP 5.3.16 has a major bug in the Reflection subsystem and is not suitable to run Symfony2 (https://bugs.php.net/bug.php?id=62715)
Installation
The best way to install Symfony2 is to download the Symfony Standard Edition available at http://symfony.com/download.
Documentation
The "Quick Tour" tutorial gives you a first feeling of the framework. If, like us, you think that Symfony2 can help speed up your development and take the quality of your work to the next level, read the official Symfony2 documentation.
Contributing
Symfony2 is an open source, community-driven project. If you'd like to contribute, please read the Contributing Code part of the documentation. If you're submitting a pull request, please follow the guidelines in the Submitting a Patch section and use Pull Request Template.
Running Symfony2 Tests
Information on how to run the Symfony2 test suite can be found in the Running Symfony2 Tests section.