[Router] Add Symfony UX Router package

[Kocal]

Q	A
Bug fix?	yes/no
New feature?	yes/no
Issues	Fix #...
License	MIT

As promised in #616 (comment), it's time for a Symfony UX Router implementation. 🎉

[smnandre]

Nice!

Do you already have some thought about the security / splits questions or do you prefer we address those later in the process ?

[Kocal]

The sooner the better I guess :p

[kbond]

I think, at least by default, only routes flagged with an expose: true option should be dumped. This matches FOSJsRoutingBundle and makes migration easier.

[tacman]

I think FOSJsRoutingBundle may already work, by dumping not the JSON but a JS file.

bin/console fos:js-routing:dump  --target=assets/js/fos_js_routes.js --pretty-print

Ryan had some comments here: FriendsOfSymfony/FOSJsRoutingBundle#466 that would automatically publish the routes (I think during the CompilerPass). That'd be really cool, but as a start a simple working example of FOSJsRoutingBundle with importmap('app') and loading the routes via a module would be great. We could document that here, and perhaps we wouldn't need a UX Router package, at least not right away.

[weaverryan]

Hi!

Thanks for getting this starts! But... since FOSJsRoutingBundle already exists and has for a long time, I would love to just add AssetMapper support for that. I think it would be fairly easy. Then the community doesn't need to migrate to a new package and we don't kill a community-supported package.

[Kocal]

Hey,

That's fair enough, I will just push my latest work and close the PR. We could re-open it later if needed :)

[tacman]

@Kocal would you be able to work on adding the AssetMapCompiler that Ryan described to the FOS bundle? I think that'd be a huge contribution and a nice solution to the problem addressed in this issue title.

I've added a comment to FriendsOfSymfony/FOSJsRoutingBundle#466 that shows a working version in a module, and Ryan added his idea to greatly simplify the DX experience.

[tacman]

If you create your own version, though, I'm happy to test it. I'm pretty much just looking for a Routing.generate() in javascript.