usePuck
A hook for building custom components that can interact with Puck.
import { Puck, usePuck } from "@measured/puck";
 
const JSONRenderer = () => {
  const { appState } = usePuck();
 
  return <div>{JSON.stringify(appState.data)}</div>;
};
 
export function Editor() {
  return (
    <Puck>
      <JSONRenderer />
    </Puck>
  );
}Components using the usePuck hook must be rendered within the <Puck> context as children, overrides or plugins.
Returns
| Param | Example | Type | 
|---|---|---|
| appState | { data: {}, ui: {} } | AppState | 
| dispatch | (action: PuckAction) => void | Function | 
| history | {} | Object | 
| selectedItem | { type: "Heading", props: {id: "my-heading"} } | ComponentData | 
| setHistories | setHistories: (histories) => {} | Function | 
| setHistoryIndex | setHistoryIndex: (index) => {} | Function | 
appState
The current application state for this Puck instance.
console.log(appState.data);
// { content: [], root: {}, zones: {} }dispatch
Execute an action to mutate the Puck application state.
dispatch({
  type: "setUi",
  ui: {
    leftSideBarVisible: false,
  },
});history
The history API provides programmatic access to the undo/redo AppState history.
| Param | Example | Type | 
|---|---|---|
| back | () => void | Function | 
| forward | () => void | Function | 
| hasPast | true | Boolean | 
| hasFuture | false | Boolean | 
| histories | [{ id: 'abc123', data: {} }] | History[] | 
| index | 5 | Number | 
history.back
A function to move the app state back through the histories.
history.forward
A function to move the app state forward through the histories.
history.hasPast
A boolean describing whether or not the present app state has past history items.
history.hasFuture
A boolean describing whether or not the present app state has future history items.
history.histories
An array describing the recorded history as History objects.
History params
| Param | Example | Type | 
|---|---|---|
| data | {} | AppState | 
| id | abc123 | String | 
data
The app state payload for this history entry.
id
A unique ID for this history entry.
history.index
The index of the currently selected history in history.histories
selectedItem
The currently selected item, as defined by appState.ui.itemSelector.
console.log(selectedItem);
// { type: "Heading", props: {id: "my-heading"} }setHistories
A function to set the history state.
const { setHistories } = usePuck();
setHistories([]); // clears all historysetHistoryIndex
A function to set current history index.
const { setHistoryIndex } = usePuck();
setHistoryIndex(2);