Deprecation: #60574 - Client Related Conditions¶
Conditions that depend on client details are unlovely for a number of reasons:
Per condition or permutation of conditions that matches, the frontend creates a different cache entry. This can lead to a very high number of cache entrys per page
Conditions based on browser or clients on server side are bad practice.
The device information in the core is outdated (for example it is possible to match "AMIGA")
Setups like reverse proxies give additional headaches with these types of conditions
All client related condition types are deprecated with this patch.
Usage of client related TypoScript conditions will result in a deprecation log message. Client related conditions are browser, version, system and useragent.
Installations using TypoScript conditions for browser, version, system or useragent.
Most usual conditions for specific browsers can nowadays be turned into conditional CSS includes
Use libraries such as modernizr for browser support
If conditions for specific clients or devices are still needed, they should be done with a userFunc condition and a project like WURFL that keep the device information more recent than the current core code like matching AMIGA