我知道有很多问题在那里讨论这个话题,但是,他们所有我已经尝试返回一个空数组。我曾尝试过:流星 - 检索最新文档
- 创建新的出版物。
- 使用for循环来检索最后一项(不快)
- 通过在客户端的数据库查看。
这里是我的刊物:
Meteor.publish('notes-newest', function() {
return Notes.find().sort({$natural: -1}).limit(10);
});
这里就是我试图访问它:
import { Meteor } from "meteor/meteor";
import React from "react";
import { withRouter } from "react-router-dom";
import { Tracker } from "meteor/tracker";
import { Accounts } from "meteor/accounts-base";
import { Notes } from "../methods/methods";
import SubjectRoutes from "./subjectRoutes/subjectRoutes";
import RenderNotesBySubject from "./renderNotesBySubject";
import Menu from "./Menu.js";
class Home extends React.Component{
constructor(props){
super(props);
this.state = {
notes: []
};
}
componentDidMount() {
Meteor.subscribe('notes-newest')
this.tracker = Tracker.autorun(() => {
const notes = Notes.find().fetch()
if(notes == null || notes == undefined){
return;
}
this.setState({ notes })
})
}
renderNewNotes(){
let notes = this.state.notes;
let count = 10;
console.log(notes);
}
render(){
return (
<div>
<Menu />
<h1></h1>
{this.renderNewNotes()}
</div>
)
}
}
export default withRouter(Home);
新代码
import { Meteor } from "meteor/meteor";
import React from "react";
import { withRouter } from "react-router-dom";
import { Tracker } from "meteor/tracker";
import { Accounts } from "meteor/accounts-base";
import { createContainer } from "meteor/react-meteor-data"
import { Notes } from "../methods/methods";
import SubjectRoutes from "./subjectRoutes/subjectRoutes";
import RenderNotesBySubject from "./renderNotesBySubject";
import Menu from "./Menu.js";
class Home extends React.Component{
constructor(props){
super(props);
this.state = {
notes: []
};
}
componentDidMount() {
// Meteor.subscribe('notes-newest')
this.tracker = Tracker.autorun(() => {
const notes = this.props.list
if(notes == null || notes == undefined){
return;
}
this.setState({ notes })
})
}
renderNewNotes(){
let notes = this.state.notes;
let count = 10;
console.log(notes);
}
render(){
return (
<div>
<Menu />
<h1></h1>
{this.renderNewNotes()}
</div>
)
}
}
export default createContainer(({props})=>{
Meteor.subscribe("notes-newest", props);
return{
list: Notes.find().fetch(),
}
}, Home);
仍然没有运气.......我上传的新代码,我不是一个真正的有经验的反应或流星用户等都可以你检查出来,并告诉我,如果我这样做是正确的? –
好吧,这是我现在的位置,在控制台有一个错误,说:“从子笔记异常 - 最新ID 9GfWBt7xs5HRPNeoY TypeError:Notes.find(...)。sort不是一个函数”。这就是为什么当我console.log(this.props.list)它返回一个空数组。我的出版物可能会出现问题,而不是数据容器? –