我正在尝试创建基于 Json 服务器包的小应用程序，这将帮助我记住我有空时想看的电影，想学习 React 和 Axios，所以我正在使用这些技术做这件事，想法是当我点击添加电影按钮 - 电影将被添加到 Json 数据库，点击删除 - 特定电影将被删除，点击列表时 - 我将能够编辑文本，
如果我执行诸如http://localhost:3000/movies/1 之类的操作，Delete 就可以工作，以显示它应该删除的 id，但是有没有办法设置它？要删除连接到我单击的按钮的列表？类似于http://localhost:3000/movies/ “id”？我将不胜感激任何帮助，因为我完全不知道如何继续
import React from 'react';
import ReactDom from 'react-dom';
import axios from 'axios';
import List from "./list.jsx";
class Form extends React.Component {
constructor(props) {
super(props)
this.state = {
name:'',
type:'',
description:'',
id:'',
movies: [],
}
}
handleChangeOne = e => {
this.setState({
name:e.target.value
})
}
handleChangeTwo = e => {
this.setState({
type:e.target.value
})
}
handleChangeThree = e => {
this.setState({
description:e.target.value
})
}
handleSubmit = e => {
e.preventDefault()
const url = `http://localhost:3000/movies/`;
axios.post(url, {
name: this.state.name,
type: this.state.type,
description:this.state.description,
id:this.state.id
})
.then(res => {
// console.log(res);
// console.log(res.data);
this.setState({
movies:[this.state.name,this.state.type,this.state.description, this.state.id]
})
})
}
handleRemove = (e) => {
const id = this.state.id;
const url = `http://localhost:3000/movies/`;
// const id = document.querySelectorAll("li").props['data-id'];
e.preventDefault();
axios.delete(url + id)
.then(res => {
console.log(res.data);
})
.catch((err) => {
console.log(err);
})
}
// editMovie = e => {
// const url = `http://localhost:3000/movies/`;
// e.preventDefault();
// const id = e.target.data("id");
// axios.put(url + id, {
// name: this.state.name,
// type: this.state.type,
// description:this.state.description,
// })
// .then(res => {
// console.log(res.data);
// })
// .catch((err) => {
// console.log(err);
// })
// }
render() {
return (
<form onSubmit={this.handleSubmit}>
<input type="text" placeholder="movie" onChange={this.handleChangeOne}/>
<input type="text" placeholder="type of movie" onChange={this.handleChangeTwo}/>
<textarea cols={40} rows={5} placeholder="description of the movie" onChange={this.handleChangeThree}></textarea>
<input type="submit" value="Add movie"></input>
<List removeClick={this.handleRemove} editClick={this.editMovie}/>
</form>
)
}
}
export default Form
列表：
import React from 'react';
import ReactDom from 'react-dom';
import axios from 'axios';
class List extends React.Component{
constructor(props){
super(props)
this.state = {
movies: [],
}
}
componentDidMount() {
const url = `http://localhost:3000/movies`;
console.log(url);
axios.get(url)
.then(res => {
console.log(res.data);
const movies = res.data;
this.setState({
movies: movies
})
})
.catch((err) => {
console.log(err);
})
}
// editMovie =(e) => {
// console.log("it works with edit!");
// if (typeof this.props.editClick === "function") {
// this.props.editClick(e)
// } else {
// console.log("Doesn't work with edit");
// }
// }
removeMovie =(e) => {
console.log("it works with remove!");
if (typeof this.props.removeClick === "function") {
this.props.removeClick(e)
} else {
console.log("Doesn't work with remove");
}
}
render(){
let movies = this.state.movies.map(e =>
<ul onClick={this.editMovie}>
<li data-id={e.id}>
{e.name}
</li>
<li data-id={e.id}>
{e.type}
</li>
<li data-id={e.id}>
{e.description}
</li>
<button type="submit" onClick={this.removeMovie}>Delete</button>
</ul>)
return(
<div>
{movies}
</div>
)
}
}
export default List;
Json 部分
{
"movies": [
{
"id": 1,
"name": "Kongi",
"type": "drama",
"description": "movie about monkey"
},
{
"id": 2,
"name": "Silent Hill",
"type": "thriller",
"description": "movie about monsters"
},
{
"name": "Harry potter",
"type": "fantasy",
"description": "movie about magic and glory",
"id": 3
}
]
}