Remove tracks functionality (calculatePageOrder)

[olemartinorg]

In #339 we discussed removing the older tracks functionality (calculatePageOrder). See discussions below. If we remove that support, we should ensure app developers are notified in DevTools when still using the configuration option in triggers. We should also make sure we support all use-cases using newer expressions - especially changing the page order in some way. It seems we already have some (undocumented) support for changing the page order using ILayoutNavigation (search for that type and its usages), where the next page can be configured per-layout file. If we enhance these properties to support expressions, we should be covered enough to be able to remove support for calculatePageOrder.

Discussion:

• Considerations for v4 #339 (comment)
• Considerations for v4 #339 (comment)
• Considerations for v4 #339 (comment)

Relevant issues:

• Navigationbar component does not trigger "calculatePageOrder" #306

Tasks

Preview Give feedback

1. Migrate from PageOrder to Dynamic Expressions #1707
   fe-v4 +1
   
2. Update Course documentation with new way of hiding/showing pages instead of tracks #1708
   fe-v4 +1
   

[RonnyB71]

This issue implies hiding and reordering of pages. Hiding is supported with expressions, while we need to look into the usage of reordering - are there any real cases of reordering of pages?

[olemartinorg]

I've read through 78 classes implementing IPageOrder, and I found no logic in any of them that could not be re-implemented using expressions. 🥳 Especially after commaContains arrived. Most classes have fairly simple logic that could be very easily replicated using expressions (removing a few pages based on data model lookups and equality comparisons), but some have a bit more advanced results (choosing between a larger range of different tracks), although the logic itself is still very simple (i.e. comparing form data with fixed strings). Crucially, I found no examples where the actual page order is altered, this functionality seems to only be used for hiding/showing certain pages.

[RonnyB71]

Oppdatere:

• Kurs
• Dokumentasjon
• Eksempler på uttryk
• Oppådatere converterings tool

Fjernes fra frontend

TImebox for å teste ut automatikk

[olemartinorg]

Re-opening. As mentioned above, we also need a strategy for migrating existing apps, update documentation, etc.

[olemartinorg]

Closing this issue as either stale/outdated or done now. Let me know if you disagree @mikaelrss 🙏