eval / custom class example with class path as string does not work with double-slashes for FlexForm

[sypets]

I am using the example for "eval" => "Vendor ...", but using this in FlexForms

The string as specified in the example with double-slashes does not work in my example. String with single-slashes does, e.g.

not:
'eval' => 'trim,Vendor\\Extension\\Evaluation\\ExampleEvaluation,required'

but:
'eval' => 'trim,Vendor\Extension\Evaluation\ExampleEvaluation,required'

(However, as stated above this was tested with FlexForm, not with TCA directly)

[remonator]

Specifying the class name in ext_localconf.php as you did is also necessary when using without FlexForms (using 10.4.9).

[linawolf]

Can be found at https://docs.typo3.org/m/typo3/reference-tca/master/en-us/ColumnsConfig/Type/Input/Properties/Eval.html now, Move Code to styleguide extension and make sure it is running.