Here’s a summary of all that was released in Q2 2023


Interacting with other fields

UI extensions can interact with the other fields of the form, and with the form itself.

For these purposes, the form property exposes the following methods:

change(fieldName: string, value: any) => Promise<void>changes the value of another field
getState() => Promise<FormState>returns the current form state
getFieldState(fieldName: string) => Promise<FieldState>returns the given field state
subscribeToFieldState(fieldName: string, callback: (state: FieldState, subscription: FieldSubscription) => void) => Promise<Unsubscribe>opens a subscription to a field's state changes
subscribeToFormState(callback: (state: FormState) => void, subscription: FormSubscription) => Promise<Unsubscribe>; opens a subscrition to the form's state changes
setFieldsVisibility(arg: VisibilityMap| ((currentVisibilityMap:VisibilityMap) => VisibilityMap)) => void;Allows modifying visibility of any field


Internally, Hygraph uses final-form to manage form and field states.


See FormState on final-form.

The FormSubscription param has the same shape as FormState, but using a boolean to describe which state changes you want to subscribe to.

subscribeToFormState((state) => console.log(state.dirty, state.errors), {
// react only to form `dirty` and `invalid` state changes
dirty: true,
invalid: true,


See FormState on final-form.

The FieldSubscription param has the same shape as FieldState, but using a boolean to describe which state changes you want to subscribe to.

subscribeToFieldState('title', (state) => console.log(state.value), {
// react only to field `value` changes
value: true,


Both subscribeToFieldState and subscribeToFormState return a function to be called when needing to unsubscribe from changes. In order to avoid perfomance issues, make sure to unsubscribe any existing subscription before subscribing again.

Example in React:

React.useEffect(() => {
let unsubscribe;
subscribeToFieldState('title', (state) => console.log(state.value), {
value: true,
}).then((fieldUnsubscribe) => (unsubscribe = fieldUnsubscribe));
return () => {
}, []);

#Set fields visibility

type VisibilityMap = {
[fieldApiId: string]: 'READ_ONLY' | 'HIDDEN' | 'READ_WRITE';

Using object form to set visibility for field with API ID fieldApiId

fieldApiId: 'READ_ONLY',

Using callback to calculate next visibility value for field with API ID fieldApiId

setFieldsVisibility((currentVisibilityMap) => {
const nextVisibilityValue =
currentVisibilityMap[fieldApiId] === 'READ_ONLY'
return {
fieldApiId: nextVisibilityValue,