[Autocomplete] Reset form state on each request for applications that reuse the Symfony application between requests

[dotdevio]

Q	A
Bug fix?	yes
New feature?	no
Issues
License	MIT

Hi there, in ux-autocomplete there is an WrappedEntityTypeAutocompleter::getForm which on first call saves form instance in WrappedEntityTypeAutocompleter $form property, it has method setOptions which is called on each request in EntityAutocompleteController, in PHP-FPM everything will work as expected where container is created on each request, but with Swoole or similar where container is not created on each request rather only first request on first EntityAutocompleteController request everything is also fine, but on second request WrappedEntityTypeAutocompleter will have an instance of form from previous request which is fine but the call of setOptions in controller will throw exception.

So in Swoole on second and next requests $this->form already contains an instance of form from previous request because DI Container is not created on each request as in PHP-FPM (Container is created only once) and exception is thrown. So, Symfony have an kernel.reset / kernel.terminate event which probably can be used here to reset $this->form in WrappedEntityTypeAutocompleter because they are fired after request is completed.

[smnandre]

Thank you @dotdevio for this PR!

Could you maybe add a test?

Also.. I'd see this more as a feature than a bug, as swoole (or similar runners) compatibility was not something supported before.. what do you think ?

[dotdevio]

Thank you @dotdevio for this PR!

Could you maybe add a test?

Also.. I'd see this more as a feature than a bug, as swoole (or similar runners) compatibility was not something supported before.. what do you think ?

This is not a feature because Symfony supports multiple runtimes and this bug will be not only in Swoole but any other runtime like FrankenPHP, RoadRunner etc. Service state shoud reset in this case for sure, no BC breaks on PHP-FPM. I would like add a test but i dont see how i can test here and i dont found any tests for WrappedEntityTypeAutocompleter. Actually there is noothing to break the app, just unsetting variable on kernel.reset event.

[smnandre]

Ok! Thank you for the fix @dotdevio :)

[1ed]

This fixes #1649

[kbond]

Perfect, thanks @dotdevio!