[英]Delete item with redux
我試圖刪除用 react 和 redux 形式編寫的消息。
正如我在控制台中看到的那樣,id 道具已正確發送,但是當我按下刪除按鈕時,我只會收到錯誤消息。
這是按鈕組件:
import React from 'react'
import { useDispatch } from 'react-redux'
import { messages, fetchDeleteMessage } from 'reducer/messages'
export const DeleteBtn = (props) => {
const dispatch = useDispatch()
const handleDeleteMessageClick = () => {
dispatch(fetchDeleteMessage(props.message.id))
console.log('delete message', (props.message.id))
}
return (
<button className="delete-btn"
onClick={handleDeleteMessageClick}>
<span role="img" aria-label="delete">✖︎</span>
</button>
)
}
這是我的減速器,我嘗試在其 id 上獲取和刪除特定消息,id 正確傳遞給 fetch,但沒有任何反應,我看不出有什么問題,感覺我都試過了(....顯然不是)
import { createSlice } from '@reduxjs/toolkit'
export const messages = createSlice({
name: 'messages',
initialState: {
allMessages: [],
},
reducers: {
deleteMessage: (state, action) => {
console.log('deleteMessageState', state)
console.log('deleteMessageAction', action)
//finds the task
//remove it from the array
state.allMessages = state.allMessages.filter((message) => message.id !== action.payload)
},
}
})
//****** fetch DELETE message ********
export const fetchDeleteMessage = (id) => {
return (dispatch) => {
fetch(`http://localhost:3004/messages/${id}`, {
method: 'DELETE',
statusCode: 204,
headers: {
'Content-Type': 'application/json'
}
})
.then((res) => res.json())
.then(json => {
console.log('DELETE', json, id)
dispatch(messages.action.deleteMessage(id))
})
.catch(err => {
console.error('error', err)
dispatch(messages.actions.deleteMessage({ error: `Error, failed to delete` }))
})
}
}
`````
要刪除一個項目,您應該返回 state
return state.allMessages.filter((message) => message.id !== action.payload)
代替
state.allMessages = state.allMessages.filter((message) => message.id !== action.payload)
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.