docs(content-layout): use rxResource to load data

[spike-rabbit]

@siemens/siemens-element share your opinions. Should we show / use experimental stuff in our docs?

The resource API allows us to significantly simply the some example code. But even in ng21 it is still experimental.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch docs/use-resource

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[github-actions]

[github-actions]

Documentation.
Examples.
Playwright report.

Coverage Reports:

• element-ng
• element-translate-ng

[spliffone]

Can you showcase how do you indicate errors, since this isn't obvious how this is handled.

[spliffone]

How does the loading indicator work in your example? Can you describe it.

[chintankavathia]

The API is in experimental since last 1 year. not sure what they are cooking but there was one blog post mentioning about some issues around the api (https://angular.schule/blog/2025-10-rx-resource-is-broken)

I would prefer not to put this on our docs as most of the time projects copy the code snippet and they don't really pay much attention whether the api is experimental or not and may end up coming back to us asking for how to handle certain use cases on top of this.

[timowolf]

No, we should only show what should be used. Remember, the mcp is now trained on our examples and is generating this code.

[spike-rabbit]

But are we sure, that projects should not be using the resource API?

I was not aware, that they were facing larger issues with it. At least in the example it works well and some parts of the blog post got solved already.