The full error in console:
Uncaught (in promise) Error: Objects are not valid as a React child (found: object with keys {id, name, description, css, ephemeral, readonly, topPost})
If you meant to render a collection of children, use an array instead or wrap the object using createFragment(object) from the React add-ons. Check the render method ofexports
.(…)
I don't really know what this error means and it doesn't point me to a line in the code, so I don't know what to do.
I am using api.jsx to fetch data from Imgur (specifically I call it in topic-store.jsx ) and then trying to render the data in topic-list.jsx
main.jsx
var React = require('react');
var Header = require('./header');
var TopicList = require('./topic-list');
module.exports = React.createClass({
render: function () {
return <div>
<Header />
{this.content()}
</div>
},
content: function () {
if (this.props.children) {
return this.props.children
} else {
return <TopicList/>
}
}
});
header.jsx
var React = require('react');
var Router = require('react-router');
var Link = Router.Link; //Router's Link object is a renderable component, that turns into an anchor tag when rendered
//Using Link allows a user to change routes without triggering a full page refresh, the content on the page will change but the browser will not refresh
module.exports = React.createClass({
render: function () {
return <nav className="navbar navbar-default header">
<div className="container-fluid">
<Link to="/" className="navbar-brand">
Imgur Browser
</Link>
<ul className="nav navbar-nav navbar-right">
<li><a>Topic #1</a></li>
</ul>
</div>
</nav>
}
});
topic-list.jsx
var React = require('react');
var TopicStore = require('../stores/topic-store');
module.exports = React.createClass({
getInitialState: function () {
return {topics: []}
},
componentWillMount: function () {
TopicStore.getTopics().then(function () {
//We have successfully fetched topics
//Topics are available on TopicStore.topics
this.setState({
topics: TopicStore.topics
});
}.bind(this));
},
render: function () {
return <div className="list-group">
Topic List
{this.renderTopics()}
</div>
},
renderTopics: function () {
return this.state.topics.map(function(topic) {
return <li>
{topic}
</li>
});
}
});
topic-store.jsx
var Api = require('../utils/api');
var Reflux = require('reflux');
module.exports = Reflux.createStore({
getTopics: function() {
return Api.get('topics/defaults').then(function(json) {
this.topics = json.data;
}.bind(this));
}
});
api.jsx
var Fetch = require('whatwg-fetch');
var rootUrl = 'https://api.imgur.com/3/';
var apiKey = 'e80dc51eb3f6d56';
module.exports = window.api = {
get: function(url) {
return fetch(rootUrl + url, {
headers: {
'Authorization': 'Client-ID ' + apiKey
}
}).then(function (response) {
return response.json()
});
}
};
The issue relies on the way you render your topic object in the renderTopics
method.
When you're doing something like this:
return <li>{topic}</li>
You're basically trying to do:
return <li>{{ id: 1, name: 'One topic' }}</li>
And React don't know how to render a raw object. To fix your issue, specify which keys of your object you want to render. For example:
renderTopics: function () {
return this.state.topics.map(function(topic) {
return (<li>{topic.id} {topic.name}</li>)
});
}
You are missing <ul></ul>
or <ol></ol>
tag in topic-list.jsx
Using <ul></ul>
tag in the render call for topics:
render: function () {
return <div className="list-group">
Topic List
<ul>
{this.renderTopics()}
</ul>
</div>
},
Update: Incorporating comments from Aperçu for completeness
You need to get the values from the json blob (does not render Raw content):
For topic being {id:1, name:Topic1}
renderTopics: function () {
return this.state.topics.map(function(topic) {
return <li>
{topic.id}{topic.name}
</li>
});
}
to complete previous answers, add brackets arround your JSX returned in render functions
exemple main.jsx :
var React = require('react');
var Header = require('./header');
var TopicList = require('./topic-list');
module.exports = React.createClass({
render: function () {
return (
<div>
<Header />
{this.content()}
</div>
);
},
content: function () {
if (this.props.children) {
return this.props.children
} else {
return <TopicList/>
}
}
});
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