Feature: #83429 - Feature Toggles¶
See forge#83429
Description¶
In order to allow better support for alternative functionality while keeping old functionality, a new API for enabling installation-wide features - called "Feature Toggles" - has been added.
The new API checks against a system-wide option array within $TYPO3_CONF_VARS['SYS']['features']
which can be
enabled system-wide. Both TYPO3 Core and Extensions can then provide alternative functionality for a certain
feature.
Features are usually breaking changes for a minor version / sprint release, which site administrators can enable at their own risk, or stay fully compatible with third-party extensions by choosing not to enable them.
Examples for having features are:
- Throw exceptions on certain occasions instead of just returning a string message as error message.
- Disable obsolete functionality which might still be used, but slows down the system.
- Enable alternative
PageNotFound handling
for an installation.
Impact¶
Features are documented for TYPO3 Core. For extension authors, the API can be used for any custom feature provided by an extension:
if (GeneralUtility::makeInstance(Features::class)->isFeatureEnabled('myFeatureName')) {
// do custom processing
}