API Documentation modal closes when submitting invalid URL

[brylie]

When editing the documentation for a given API, the modal dialogue can be closed when the URL is invalid. The autoform/schema will reject the invalid URL, so the change does not get saved to the database. This creates an inconsistent experience for the user, since they do not see the validation error and are left to scratch their head.

[ilarimikkonen]

for 0.58

[ilarimikkonen]

[matleppa]

It is hard to prevent the modal closing, so we can add a error text, which updates when the API document address is typed into the input field.
This way the user sees, when the URL is formally correct and expected to be added into database.

[matleppa]

There is a alight usability problem:
When URL is typed in, the autofill shows drop-down menu, if suitable values exist.
This menu covers the error message.
One solution might be adding the error message above the input field.
However, the afQuickField element in autoform shows the error message below input field as default. If a change were needed, the functionality needs to be implemented instead of default functionality.

And the common look-and-feel would be lost.