TYPO3 Core

My class is perfectly callable. If I add the method name to it, it is instantiated and called:

$GLOBALS['TYPO3_CONF_VARS']['FE']['eID_include']['myeidid'] = \My\AjaxController::class.'::__invoke'

The problem lies in EidRequestHandler::dispatch() where the condition

...
if (strpos($configuration, '::') !== false || is_callable($configuration)) {
...

always returns false. '::' is not there because it's a class name, and callable returns false when argument is a class (php 5.6.19) here.

The class was existing before migrating from 7.4.0 to 7.6.2 and worked with autoload.

I think the condition should be something like that:

...
if (strpos($configuration, '::') !== false || class_exists($configuration) || is_callable($configuration)) {
...

I double-checked now with the docs. Your syntax is simply wrong, a class name alone is not supported.

You either must specify a callable (className::method) or a filename (legacy).

I did not find any documentation at the time I created the ajax handler 3 or 4 month ago nor now. So I had to read the code, debug and do "trial and error".

Fact is, that it worked with Version 7.4.0 and did not with 7.6.4. And there is code to handle a class name in 'EidRequestHandler', but the code for that in "EidRequestHandler" is gone somewhere after 7.4.0. This is a breaking change (undocumented?)- because the new <class>::<method>-synthax is not compatible with version 7.4.0, as the old <class>-synthax is not with 7.6.x.

Would you please be so kind to tell me where I can find the documention you mentioned? I could not find it - and I would be happy to work with a documentation instead of doing time expensive code analysis.