docs-bug(MatFormFieldControl): Update "Creating a Custom Form Field Control" for Signals

[pcurrivan]

Documentation Feedback

This is probably already on your TODO list, but in this guide, the first example ("Form field with custom telephone number input control.") has a typescript file using Signals and Signal effects, but the rest of the guide does not mention Signals. It would be great to have the guide re-written using Signals. Creating a custom form field control can already be quite complicated, and Signals are a new concept, so having these docs up to date would be very helpful. Thanks!

Affected documentation page

https://material.angular.io/guide/creating-a-custom-form-field-control

[jmeinlschmidt]

I'm afraid the main issue at this point is that, it is impossible to implement MatFormFieldControl interface using signal-based inputs due to type mismatch.

[guillaume-moreau]

Is this planned in the future to have MatFormFieldControl compatible with signals ?