我有一个空状态数组，当我尝试使用react-addons-update更改状态时，我收到此错误import React from 'react';
import ReactDOM from 'react-dom';
import Helmet from "react-helmet";
import axios from 'axios';
import { browserHistory } from 'react-router';
import { BootstrapTable, TableHeaderColumn } from 'react-bootstrap-table';
import {encrypt, decrypt} from '../utils/pgp.js';
import update from 'react-addons-update';
export default class Passwords extends React.Component {
constructor(props) {
super(props);
this.state = {
bunny: [],
loaded: false
}
}
componentDidMount = () => {
(async function(){
let bugs = await axios.get('/api/vault/', {
headers: {'Authorization': "JWT " + sessionStorage.getItem('token')}
});
let hiren = [];
bugs.data.forEach(async data => {
let temp = {};
temp['id'] = data.id;
temp['site_url'] = data.site_url;
temp['tag'] = data.tag;
temp['email'] = await decrypt(sessionStorage.getItem('key'), data.email);
temp['username'] = await decrypt(sessionStorage.getItem('key'), data.username);
temp['password'] = await decrypt(sessionStorage.getItem('key'), data.password);
temp['note'] = await decrypt(sessionStorage.getItem('key'), data.note);
temp['created_at'] = data.created_at;
temp['updated_at'] = data.updated_at;
hiren.push(temp);
});
//this.setState({bunny: hiren}); <-- renders empty table
this.setState(update(this.state, {$push: hiren}));
this.setState({loaded: true});
console.log(this.state.bunny);
}.bind(this))();
}
render() {
function anchor(cell, row){
let a;
if (cell.startsWith('http://'))
a = cell.slice(7);
else if (cell.startsWith('https://'))
a = cell.slice(8);
return '<a href=' + cell + '>' + a + '</a>' ;
}
if(this.state.loaded) {
return (
<div>
<Helmet
title="Vault-> Passwords"
/>
<BootstrapTable data={this.state.bunny} striped={true} hover={true} condensed={true} pagination={true} search={true}>
<TableHeaderColumn dataField="id" isKey={true}>ID</TableHeaderColumn>
<TableHeaderColumn dataField="site_url" dataFormat={anchor} dataSort={true}>URL</TableHeaderColumn>
<TableHeaderColumn dataField="email">Email</TableHeaderColumn>
<TableHeaderColumn dataField="username">Username</TableHeaderColumn>
<TableHeaderColumn dataField="password">Password</TableHeaderColumn>
<TableHeaderColumn dataField="note">Note</TableHeaderColumn>
<TableHeaderColumn dataField="tag">Tag</TableHeaderColumn>
<TableHeaderColumn dataField="created_at">Created At</TableHeaderColumn>
<TableHeaderColumn dataField="updated_at">Updated At</TableHeaderColumn>
</BootstrapTable>
</div>
)
}
return <div>loading.... </div>
}
}
。这是代码：
sudo add-apt-repository ppa:webupd8team/sublime-text-3
那么在状态下推送数组的正确方法是什么？
答案 0 :(得分：2)
尝试使用this.setState(update(this.state, {bunny: { $push: hiren } }))
并且您在forEach中使用异步函数。在调用setState时，变量hiren将为空。