这是输入代码:
Title: <input type="text" ref="searchTitle" onChange={this.searchTitle}/>
这是onChange事件处理程序:
searchTitle(event) {
this.setState({
show_article_editable_list: <Article_Editable_List articleTitle={event.target.value}/>,
});
}
这是订阅方法,其中包含以前代码中的事件值:
export default createContainer( (props) => {
const articleTitle = props.articleTitle;
Meteor.subscribe('search_results', articleTitle);
return { articles: Articles.find({}).fetch() };
}, Article_Editable_List);
这是从订阅获取参数的发布方法:
Meteor.publish('search_results', function (articleTitle) {
if(articleTitle) {
return Articles.find({articleTitle});
}
});
这是带有索引的集合代码:
export const Articles = new Mongo.Collection('articles');
if(Meteor.isServer) {
Articles._ensureIndex({
articleTitle: "text",
});
}
这是显示搜索结果的位置:
render() {
return (
this.props.articles.map( (article) => {
const dateCreated = article.createdAt.toString();
const dateUpdated = article.updatedAt.toString();
return (
<div key={article._id} className="article_list_editable">
<h1>{article.articleTitle}</h1>
<br/>
<h1>{article.articleAuthor}</h1>
<div>{dateCreated}</div>
<div>{dateUpdated}</div>
<div>{article.articleType}</div>
</div>
)
})
)
}
这是需要解决的错误
Error: Article_Editable_List.render(): A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object.
答案 0 :(得分:1)
看起来你需要将地图包装在像
这样的包装中 render() {
return (
<div>{
this.props.articles.map( (article) => {
const dateCreated = article.createdAt.toString();
const dateUpdated = article.updatedAt.toString();
return (
<div key={article._id} className="article_list_editable">
<h1>{article.articleTitle}</h1>
<br/>
<h1>{article.articleAuthor}</h1>
<div>{dateCreated}</div>
<div>{dateUpdated}</div>
<div>{article.articleType}</div>
</div>
)
}
)
}</div>
)
}
因为map返回数组,但是你只能返回单个组件,而不是数组。