我是 redux 的新手,我正在尝试将一个项目添加到购物篮中,但我得到了,TypeError: Cannot read properties of undefined (reading 'getState')。为什么我无法获得状态是我需要做的事情我没有做,请问我做错了什么。我正在使用 useDispatch 挂钩来读取存储并调度操作
嘿是我的代码
import { createSlice } from '@reduxjs/toolkit';
const initialState = {
items: [],
}
export const basketSlice = createSlice({
name: "basket",
initialState,
reducers: {
addToBasket: (state, action) => {
state.items = [...state.items, action.payload]
},
removeFromBasket: (state, action) => {},
}
});
export const { addToBasket, removeFromBasket} = basketSlice.actions;
export const selectItems = (state) => state.basket.items;
export default basketSlice.reducer;
import { configureStore } from "@reduxjs/toolkit";
import basketReducer from "../slices/basketSlice";
export const store = configureStore({
reducer: {
basket: basketReducer,
},
});
import '../styles/globals.css'
import { SessionProvider } from "next-auth/react"
import { Provider } from 'react-redux'
import store from '../app/store'
export default function App({
Component,
pageProps: { session, ...pageProps },
}) {
return (
<Provider store={store}>
<SessionProvider session={session}>
<Component {...pageProps} />
</SessionProvider>
</Provider>
)
}
import { useDispatch } from 'react-redux'
import {addToBasket} from "../slices/basketSlice"
const Product = ({id, title, description, price, image, category }) => {
const dispatch = useDispatch();
const addItemToBasket = () => {
const product = {
id,
title,
description,
price,
image,
category
}
dispatch(addToBasket(product))
}
return (
<div className="relative flex flex-col m-10 p-10 bg-white rounded-3xl">
<button onClick={addItemToBasket} className=" button">Add to basket</button>
</div>
)
}
export default Product;
看起来状态没有在<Provider />
组件内部正确设置。你store
是一个命名的导出,但它被导入_app.js
就好像它是一个default
导出(没有花括号)。尝试import { store } from "../some_path_to_store"
改用。
这是一个工作示例,可以从评论部分结束我们的讨论:https ://codesandbox.io/s/crazy-fire-o3tr54
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我来说两句