[英]displaying data from axios using react.js and redux
因此,我目前正在學習redux,並且正在制作一個顯示文章列表的應用程序。 但是我不知道為什么我的后端數據沒有顯示出來。 我不確定我的錯誤是在哪里阻止我的后端數據顯示? 我知道這不是redux的設置,因為我做了一個更簡單的應用程序,以查看是否是問題所在,而事實並非如此,它必須在動作,reducers和組件上做更多的事情。 當數據庫中有更多數據提供鏈接時,我想走得更遠,以便轉到另一個頁面,該頁面顯示有關該文章的所有信息。
來自我的節點后端的數據
[{"_id":"58c71df9f7e4e47f1fe17eeb","article":"words words","author":"Jason","date":"1/2/2014","title":"my article","__v":0}]
fashionActions.js
import axios from "axios";
export function fetchFashionArticle() {
return function(dispatch) {
axios.get("http://localhost:3000/api/fashion")
.then((response) => {
dispatch({type: "FETCH_FASHIONARTICLES_FULFILLED", payload: response.data})
})
.catch((err) => {
dispatch({type: "FETCH_FASHIONARTICLES_REJECTED", payload: err})
})
}
}
export function addFashionArticle(_id, title,date, author, article) {
return {
type: "ADD_FASHIONARTICLE",
payload: {
_id,
title,
date,
author,
article,
},
}
}
export function updateFashionArticle(_id, title,date, author, article) {
return {
type: "UPDATE_FASHIONARTICLE",
payload: {
_id,
title,
date,
author,
article,
},
}
}
export function deleteFashionArticle(id) {
return {type: 'DELETE_FASHIONARTICLE', payload: id}
}
FashionArticle.js
import React from "react";
import { connect } from "react-redux";
import {fetchFashionArticle} from "../actions/fashionActions";
@connect((store) => {
return {
fashionarticles:store.fashionarticles.fashionarticles,
};
})
export default class FashionArticle extends React.component {
fetchFashionArticle() {
this.props.dispatch(fetchFashionArticle())
}
render() {
const { fashionarticles } = this.props;
if(!fashionarticles.length) {
return <button onClick={this.fetchFashionArticles.bind(this)}>Load articles</button>
}
const mappedArticles = fashionarticles.map(fashionarticle => <li>{fashionarticle}</li>)
return(
<div>
<h1>Fashion Article</h1>
<h2>{fashionarticles.title}</h2>
</div>
)
}
}
fashionArticleReducers.js
export default function reducer(state={
fashionarticles: [],
fetching: false,
fetched: false,
error: null,
}, action) {
switch (action.type) {
case "FETCH_FASHIONARTICLES": {
return {...state, fetching: true}
}
case "FETCH_FASHIONARTICLES_REJECTED": {
return {...state, fetching: false, error: action.payload}
}
case "FETCH_FASHIONARTICLES_FULFILLED": {
return {
...state,
fetching: false,
fetched: true,
fashionarticles: action.payload,
}
}
case "ADD_FASHIONARTICLE": {
return {
...state,
fashionarticles: [...state.fashionarticles, action.payload],
}
}
case "UPDATE_FASHIONARTICLE": {
const { _id, title,date,author,article } = action.payload
const newFashionArticles = [...state.fashionarticles]
const fashionarticleToUpdate = newFashionArticles.findIndex(fashionarticle => fashionarticle.id === id)
newFashionArticles[fashionarticleToUpdate] = action.payload;
return {
...state,
fashionarticles: newFashionArticles,
}
}
case "DELETE_FASHIONARTICLE": {
return {
...state,
fashionarticles: state.fashionarticles.filter(fashionarticle => fashionarticle.id !== action.payload),
}
}
}
return state
}
index.js
import { combineReducers } from 'redux';
import user from './testReducers'
import fashionarticles from './fashionArticleReducers';
export default combineReducers({
user,
fashionarticles,
})
您正在發送帶有axios響應的有效負載,類型為FETCH_FASHIONARTICLES_DONE
但是減速器正在監聽FETCH_FASHIONARTICLES_FULFILLED
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