[Routing] Fix default value not taken if usigng name:entity.attribute

[eltharin]

Q	A
Branch?	7.3
Bug fix?	yes
New feature?	no
Deprecations?	no
Issues
License	MIT

When using Mapped parameters, default values can't be used :

 #[Route('/zoom/{vortexLibelle:vortex.libelle}/{libelle:otherVortex}', name: 'zoom', methods: ['GET'])] #[AjaxCallOrNot] public function zoom(VortexManager $vr, Vortex $vortex, ?Vortex $otherVortex = null): Response { ... }

or

 #[Route('/zoom/{vortexLibelle:vortex.libelle}/{otherVortexLibelle:otherVortex.libelle}', name: 'zoom', methods: ['GET'])] #[AjaxCallOrNot] public function zoom(VortexManager $vr, Vortex $vortex, ?Vortex $otherVortex = null): Response { ... }

route was not found if we want to go to : /zoom/myVortex,

with this fix, it's OK

[nicolas-grekas]

what about the logic for backed enums in the previous block? don't we need something similar?

[eltharin]

I write on my todolist to allow mapped parameters notation to use BackedEnum::from :)

[nicolas-grekas]

Thank you @eltharin.