我正在设置“设置”页面，登录用户可以更改其个人资料图片。但是，Meteor似乎无法找到profile的{{1}}属性。
signup.js（这是我在注册时创建用户并创建个人资料属性的地方）
userprofile_settings.js
import React, { Component } from 'react';
import { browserHistory } from 'react-router';
export default class Signup extends Component {
handleSubmit(event) {
event.preventDefault();
var signupEmail = event.target.signupEmail.value;
var signupPassword = event.target.signupPassword.value;
if (signupPassword !== '') {
Accounts.createUser({
email: signupEmail,
password: signupPassword,
profile: {
avatar: "/user-default.svg"
}
}, (err) => {
err ? (console.log(err.reason)) : browserHistory.push("/app/profile");
});
}
}
render() {
return (
<div className="login-form">
<form onSubmit={this.handleSubmit}>
<div className="input-options">
<input type="text" placeholder="Email" name="signupEmail" />
</div>
<div className="input-options">
<input type="password" placeholder="Password" name="signupPassword" />
</div>
<button className="login-submit bold">Sign me up!</button>
</form>
</div>
);
}
}
以下是我收到的错误：import React, { Component } from 'react';
import { Link } from 'react-router';
import reactMixin from 'react-mixin';
import ReactMeteorData from 'meteor/react-meteor-data';
export default class ProfileSettings extends Component {
constructor(props) {
super(props);
this.state = {
avatar: this.props.user.profile.avatar
}
}
getMeteorData(){
return{
user: Meteor.user()
}
}
componentWillMount(){
// we create this rule both on client and server
Slingshot.fileRestrictions("avatar", {
allowedFileTypes: ["image/png", "image/jpeg", "image/gif"],
maxSize: 2 * 500 * 500
});
}
upload(){
var userId = Meteor.user()._id;
var metaContext = {avatarId: userId};
var uploader = new Slingshot.Upload("UsersAvatar", metaContext);
uploader.send(document.getElementById('input').files[0], function (error, downloadUrl) { // you can use refs if you like
if (error) {
// Log service detailed response
console.error('Error uploading', uploader.xhr.response);
alert (error); // you may want to fancy this up when you're ready instead of a popup.
}
else {
// we use $set because the user can change their avatar so it overwrites the url :)
Meteor.users.update(Meteor.userId(), {$set: {"profile.avatar": downloadUrl}});
}
// you will need this in the event the user hit the update button because it will remove the avatar url
this.setState({avatar: downloadUrl});
}.bind(this));
}
formSubmit(){
let avatarUrl = this.state.avatar;
Meteor.users.update( {_id: Meteor.userId() }, {
$set: {profile: avatarUrl}
});
}
render() {
return (
<div>
<div className="sticky-header">
<h3>Settings</h3>
</div>
<form>
<div className="row well">
<div className="col-md-6">
<div className="form-group">
<label htmlFor="exampleInputFile">File input</label>
<input type="file" id="input" onChange={this.upload.bind(this)} />
<p className="help-block">Image max restriction: 2MB, 500x500. Cropped: 200x200</p>
</div>
</div>
<div className="col-md-6 utar-r">
<img src={this.state.avatar} height="200" width="200" alt="..." className="img-rounded" />
</div>
<div className="form-group">
<button className="btn btn-lg btn-primary btn-block" type="submit" onClick={this.formSubmit.bind(this)}>Update Profile</button>
</div>
</div>
</form>
<footer className="sticky-footer">
<Link to="/app/profile">
<button className="profile-edit bg-black">
<h3>Cancel</h3>
</button>
</Link>
<Link to="">
<button className="profile-edit">
<h3>Save Changes</h3>
</button>
</Link>
</footer>
</div>
);
}
}
reactMixin(ProfileSettings.prototype, ReactMeteorData);
答案 0 :(得分：0)
错误无法找到profile属性，但表示没有user（或user未定义）这正是{{1}意味着。
您的代码中存在一些错误：
TypeError: Cannot read property 'profile' of undefined而不是getMeteorData this.data的返回
this.props将在getMeteorData之后运行，因此无法在构造函数中获取Meteor的数据constructor反应性地返回数据，并且在您实例化该类时可能没有您想要的数据所以我建议使用容器/组件方法，如：
getMeteorData使用此结构，export default class ProfileSettingsContainer extends Component {
getMeteorData(){
return{
user: Meteor.user()
}
}
render() {
const user = this.data.user;
if (user) {
return <ProfileSettings user={user} />
} else {
return null; // or what ever placeholder you want while the data is being loaded
}
}
}
class ProfileSettings extends Component {
constructor(props) {
super(props);
this.state = {
avatar: props.user.profile.avatar
}
}
}
将使用ProfileSettings
Finnaly，
props.user应该是
Meteor.users.update( {_id: Meteor.userId() }, {
$set: {profile: avatarUrl}
});
但那是无关的