使用React-Redux的类型化分派

yduiuuwa  于 2022-11-24  发布在  React
关注(0)|答案(1)|浏览(175)

在正式的tutorial之后,我真的不明白如何正确地使用react-redux@8.0.5发送更新。
我的设置如下所示:

export const mySlice = createSlice({
  name: 'MyItem',
  initialState: { field1: 'hello, world', field2: 0 },
  reducers: {
    setField: (state: { field1: string; field2: number }, action: PayloadAction<string>) => {
      state.field1 = action.payload;
    },
  },
});

export const store = configureStore({
  reducer: {
    myItem: mySlice.reducer,
  },
});

export type AppDispatch = typeof store.dispatch;

在一个组件的内部,我挣扎着分派:

const dispatch: AppDispatch = useDispatch();

// Resembles the `dispatch(increment())}` from the offical example, but I get a type error and I can't pass my update data.
// Additionally, the signature looks wrong (it looks like a reducer)
dispatch(mySlice.actions.setField());
// Since the signature doesn't match, TypeScript complains with `Void function return value is used`
dispatch(mySlice.actions.setField('newValue')) 
// TypeScript won't complain, but it doesn't seem like I could pass my update this way
dispatch(mySlice.actions.setField);
// TypeScript won't complain, but it's neither typed nor the recommended approach anyway
dispatch({ type: 'Idontexist', someValue: "hey" });

谢谢你的帮助!

jljoyd4f

jljoyd4f1#

正确导出

export const {setField} = mySlice.actions;

现在您可以导入它并调度(setField())

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