Deprecations Added in Ember 5.x

Previously, if no Route#model hook was specified and a _id parameter was present, Ember would attempt to figure out how to load that model for you. Specify your own model hook to load from the store, if desired.

An optional feature, called no-implicit-route-model, can be turned on to clear this deprecation and opt in to the new behaviour. This optional feature is enabled in blueprints as of v5.7.0 and will be removed in v6.0.0. For more information, see the optional features guides.

For example:

import { Route } from '@ember/routing/route';
import { service } from '@ember/service';

export default class MyModelRoute extends Route {
  @service store;

  model({ my_model_id }) {
    return this.store.findRecord('my-model', my_model_id);
  }
}

For more background, read the RFC.

There are two types of paths to migrate off the old layouts

• use a currently supported multi-file layout (keeping separate js, ts, and hbs files)
• migrate the component entirely to the latest component format, gjs, gts, (aka <template>)

There are some tools to help with this:

• Classic to Colocation
• Convert pods to Colocation

Specifically, these layouts are no longer supported:

{app,addon}/
  components/
    foo.js
    namespace/
      bar.js
  templates/
    components/
      foo.hbs
      namespace/
        bar.hbs

{app,addon}/
  components/
    foo/
      component.js
      template.hbs
    namespace/
      bar/
        component.js
        template.hbs

The above example(s) can be migrated to:

{app,addon}/
  components/
    foo.js 
    foo.hbs
    namespace/
      bar.js
      bar.hbs

Or using --component-structure=nested

{app,addon}/
  components/
    foo/
      index.js 
      index.hbs
    namespace/
      bar/
        index.js
        index.hbs

Note, however, that classic components importing the layout and setting it on an @ember/component will still work. The key thing being deprecated is the runtime resolution of templates, so if there is an import involved, there is no runtime resolution.