NGRX 实体 updateOne 不工作：id undefined

Question

我决定寻求帮助，但我无法理解 NGRX 实体！（此代码最初由 NX 创建）。

我遵循了 NGRX 实体指南，我也看了很多教程视频，但我仍然无法使 NGRX 实体 updateOne 工作。在下面收到此错误 - 我可以毫无问题地将实体加载到商店中，这些正在构建我的 UI 很好。

我有一个实体按钮集合，希望在单击按钮时更新按钮的存储状态 - 仅此而已！

（知道为什么这不起作用吗？？）

ERROR TypeError: Cannot read property 'id' of undefined
    at http://localhost:4200/vendor.js:83815:26
    at Array.filter (<anonymous>)
    at updateManyMutably (http://localhost:4200/vendor.js:83811:27)
    at updateOneMutably (http://localhost:4200/vendor.js:83801:16)
    at Object.operation [as updateOne] (http://localhost:4200/vendor.js:83622:27)
    at http://localhost:4200/main.js:1169:28
    at http://localhost:4200/vendor.js:88532:26
    at reducer (http://localhost:4200/main.js:1173:12)
    at http://localhost:4200/vendor.js:87072:20
    at combination (http://localhost:4200/vendor.js:86960:37)

这是我目前的代码：

// state
export interface QuickButton {
    id: number;
    isSelected: boolean;
    title: string;
    linkUrl: string;
}

// in component
this.store.dispatch( actions.setQuickFilter( evt ) );

// evt = {id: 1, isSelected: true, linkUrl: "", title: "Video"}

// in actions
export const setQuickFilter = createAction(
  '[QuickBar] setQuickFilter',
  props<{update: Update<QuickButton>}>()
);

// in reducer
export const QUICKBAR_FEATURE_KEY = 'quickBar';

export interface State extends EntityState<QuickButton> {
  selectedId?: string | number; // which QuickBar record selected
  loaded: boolean; // has the QuickBar list been loaded
  error?: string | null; // last none error (if any)
}

export interface QuickBarPartialState {
  readonly [QUICKBAR_FEATURE_KEY]: State;
}

export const quickBarAdapter: EntityAdapter<QuickButton> = createEntityAdapter<QuickButton>();

export const initialState = quickBarAdapter.getInitialState({
  // set initial required properties
  loaded: false,
});

const quickBarReducer = createReducer(
  initialState,

  on(QuickBarActions.loadQuickBarSuccess, (state, action) =>
    quickBarAdapter.addAll( action.quickBar, state )
  ),
  on(QuickBarActions.loadQuickBarFailure, (state, { error }) => ({
    ...state,
    error,
  })),

  on(QuickBarActions.setQuickFilter, (state, {update}) => {
      /// **** This is NOT Working *****
      return quickBarAdapter.updateOne( update, state);
    } 
  )
);

export function reducer(state: State | undefined, action: Action) {
  return quickBarReducer(state, action);
}

export const {
  selectIds,
  selectEntities,
  selectAll,
  selectTotal,
} = quickBarAdapter.getSelectors();

Answer 1

您发送的操作不正确。

this.store.dispatch(actions.setQuickFilter(evt));

应该是

this.store.dispatch(actions.setQuickFilter({ update: evt }));

Answer 2

耶！！最后。这是一个真正的愚蠢错误——因为不理解实体。大量的反复试验和记录来解决这个问题！

解决方法：更改组件中的调度调用 from:

this.store.dispatch( actions.setQuickFilter( {update: evt} } ) );

至：

this.store.dispatch( actions.setQuickFilter( {update: {id: evt.id, changes: evt} } ) );

现在，我所有订阅的功能都可以使用按钮中的更新值来控制它们自己的 UI 元素。终于！

NGRX 实体 updateOne 不工作：id undefined

NGRX entity updateOne not working: id undefined

javascript

entity

crud

ngrx

angular