A Gentle Introduction to symfony (pdf) - Bad Request

Chapter 12: Caching 205_day:contextual: trueenabled: trueListing12-11Global components (the ones located in the application templates/ directory) can becached, provided that you declare their cache settings in the application cache.yml.Caching a Template FragmentAction caching applies to only a subset of actions. For the other actions—those that updatedata or display session-dependent information in the template—there is still room for cacheimprovement but in a different way. Symfony provides a third cache type, which is dedicatedto template fragments and enabled directly inside the template. In this mode, the action isalways executed, and the template is split into executed fragments and fragments in thecache, as illustrated in Figure 12-3.Figure 12-3 - Caching a template fragmentFor instance, you may have a list of users that shows a link of the last-accessed user, and thisinformation is dynamic. The cache() helper defines the parts of a template that are to be putin the cache. See Listing 12-5 for details on the syntax.Listing 12-5 - Using the cache() Helper, in frontend/modules/user/templates/listSuccess.phpListing12-12Here’s how it works:• If a cached version of the fragment named ‘users’ is found, it is used to replace thecode between the and the lines.• If not, the code between these lines is processed and saved in the cache, identifiedwith the unique fragment name.----------------- Brought to you by