Router: Support keepAlive for multiple instances of the same dynamic route

[ChrisArasin]

I have a show/entity page that links to related shows. They both use the dynamic route entity/:entityId.
I want to preserve the scrolled position on the first show page when when clicking through to the second show page and then back pressing to the original page by using keepAlive.

However, the Router does not seem to allow preserving multiple instances of the same route, as cleanup is forced if the same route template is detected.

Lightning-SDK/src/Router/utils/router.js

Lines 411 to 414 in 092fe4b

	// if the current and new request share the same route blueprint
	if (activeRoute === request.route.path) {
	doCleanup = true
	}

[sandeep-vedam]

Hi @ChrisArasin

We are investigating this issue. Just wanted to know whether you have used any other Router parameters in the app.

[ChrisArasin]

@sandeep-vedam What do you mean exactly? I have other routes that are also dynamic if that's the question.

[sandeep-vedam]

Hey @ChrisArasin
I mean any of the Router settings mentioned in the below link
https://lightningjs.io/docs/#/lightning-sdk-reference/plugins/router/settings

[ChrisArasin]

At the moment we have this configuration:

  router: {
    lazyCreate: true,
    lazyDestroy: true,
    gcOnUnload: true,
    reuseInstance: false,
    destroyOnHistoryBack: true,
  },