Show error messanges from backend as popup

[wellemut]

User Story: As a user, I want to know why, if something does not work as expected

Problem

The strict Backend Validation often prevents the user to save an entry, and sends and answer to the post request.

• Mailadress is wrong (contains ä) (is not validated in frontend)
• Webadress is wrong (less possible, because its validated in entry formular)
• missing location

But the error message is only shown via API, so user would have to open dev tools of the browser.

Such a message is better than nothing but much too general But the backend is sending a better respons https://github.com/kartevonmorgen/kartevonmorgen/issues/661

Solution

• [x] Whatever the backend send a answer to the post-request, please show it to the user as popup in the frontend Good example is this popup

• [x] Mailadress is wrong (contains ä) (is not validated in frontend)

• [x] Webadress is wrong (less possible, because its validated in entry formular)

• [ ] missing location

Technical solutions:

• Backend Issue: Return JSON Content-Type for error messages https://github.com/kartevonmorgen/openfairdb/issues/116
  • Pull-Request: https://github.com/kartevonmorgen/openfairdb/pull/353

[navid-kalaei]

@wellemut the backend dev server is not updated and does not return the error message. even though if it's updated, it only returns CORS error, not the actual cause. I was not able to reproduce the issue therefore I did not develop this feature.

[wellemut]

Here it works.

I get a specific error messages from the dev backend...

[wellemut]

Feedback:

• [x] The error message at the top of the edit form is not visible: Jump to the top if there is an error...