f0519486f2
This PR was merged into the 3.3 branch.
Discussion
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Parse the _controller format in sub-requests
| Q | A
| ------------- | ---
| Branch? | 3.3
| Bug fix? | yes
| New feature? | no
| BC breaks? | possibly (edge case)
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | #22966
| License | MIT
| Doc PR | n/a
As mentioned on the issue (https://github.com/symfony/symfony/issues/22966#issuecomment-305289227), the new "controller service args" functionality relies on the `_controller` attribute to be in either the service format `App\Controller\Foo:bar` or at least the final parsed format `App\Controller\Foo::bar`. But when you make a sub-request with the `App:Foo:bar` format, the `ControllerResolver` correctly parses this, but the `_controller` request attribute will always contain the original `App:Foo:bar` format. That causes the `ServiceValueResolver` to fail.
The only way I can think to fix this - reliably - is to parse the `_controller` attribute in a listener. And this, works great! Notes:
A) There is a small chance for a BC break: if you were relying on the `_controller` old format in a `kernel.request` format in the framework, in a listener between the priority of 25 and 31 for sub-requests (because normal requests have `_controller` normalized during routing)... then you will see a behavior change.
B) We could load the `ControllerNameParser` lazily via a service locator.
C) We could deprecate calling the parser in the FW's `ControllerResolver`. Along with (B), I think it would (in 4.0) mean that the `ControllerNameParser` is not instantiated at runtime (except for sub-requests).
If someone can think of a different/better solution, please let me know!
Cheers!
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