November 2023 - refactoring Discovery routes: how will it affect my theme/plugin?

david · November 6, 2023, 10:47am

This change is now live in main/tests-passed

DEV: Refactor discovery routes to remove use of 'named outlets' (#22622)

committed 10:39AM - 06 Nov 23 UTC

The motivation of this PR is to remove our dependence on Ember's 'named outlets'…, which are removed in Ember 4+. At a high-level, the changes can be summarized as: - The top-level `discovery` route is totally emptied of all logic. The HTML structure of the template is moved into the `<Discovery::Layout />` component for use by child routes. - `AbstractTopicRoute` and `AbstractCategoryRoute` routes now both lean on the `DiscoverySortableController` and associated template. This controller is where most of the logic from the old top-level `discovery` controller has ended up. - All navigation controllers/templates have been replaced with components. `navigation/categories`, `navigation/category` and `navigation/default` were very similar, and so they've all been combined into `<Navigation::Default>`. `navigation/filter` gets its own component. - The `discovery/topics` controller/template have been moved into a new `<Discovery::Topics>` component. Various other parts of the app have been tweaked to support these changes, but I've tried to keep that to a minimum. Anything from `<TopicList>` down is untouched, which should hopefully mean that a large proportion of topic-list-customizing themes are unaffected. For more information, see https://meta.discourse.org/t/282816

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November 2023 - refactoring Discovery routes: how will it affect my theme/plugin?

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