symfony/symfony — pull request #5187 by Tobion (2012-08-06 02:08:05+00:00)
Title: [Routing] allow disabling the requirements check on URL generation

This adds the possibility to disable the requirements check (`strict_requirements = null`) on URL generation.

To sum up, here the possibilities:
- `strict_requirements = true`: throw exception for mismatching requirements (most useful in development environment).
- `strict_requirements = false`: don't throw exception but return null as URL for mismatching requirements and log it (useful when you cannot control all params because they come from third party libs or something but don't want to have a 404 in production environment. it logs the mismatch so you can review it).
- `strict_requirements = null`: Return the URL with the given parameters without checking the requirements at all. When generating an URL you should either trust your params or you validated them beforehand because otherwise it would break your link anyway (just as with strict_requirements=false). So in production environment you should know that params allways pass the requirements. Thus you could disable the check on each URL generation for performance reasons. If you have 300 links on a page and each URL at least one param you safe 300 unneeded `preg_match` calls. I tested the performance in one of my projects. The rendering time of a single template that contains ~300 links with several params was reduced from avg. 46ms to avg. 42ms. That are 8.7% reduction in the twig layer where the links are created on each request.

Btw, this is based on 5181 (and thus includes unrelated changes) and will be rebased later.