使用 ES6 在 React 中映射对象内部的数组

Mapping an array inside an object in React with ES6

我正在制作一个 react-feed 应用程序,灵感来自 Michael's tutorial (there's also a video) and I encountered some trouble trying to pass an array inside an array as props using Lodash's _.map 功能。这是我映射的信息:

const events = [ 
                {
                    event: 'Gods',
                    venue: 'Asgard',
                    venuePicture: 'picture1.jpg',
                    when: '21:00 27/04/16',
                    genres: ['rock', 'funk'],
                    artists: [
                        {
                            artist: 'Thor',
                            artistPicture: 'thor.jpg'
                        },

                        {
                            artist: 'Loki',
                            artistPicture: 'loki.jpg'
                        }
                    ]

                },

                {
                    event: 'Humans',
                    venue: 'Midgard',
                    venuePicture: 'picture2.jpg',
                    when: '21:00 27/04/16',
                    genres: ['jazz', 'pop'],
                    artists: [
                        {
                            artist: 'Human1',
                            artistPicture: 'human1.jpg'
                        },

                        {
                            artist: 'Human2',
                            artistPicture: 'human2.jpg'
                        }
                    ]

                }


             ];

我正在像这样传递给组件(这有效):

renderItems(){
        const props = _.omit(this.props, 'events');

        return _.map(this.props.events, (event, index) => <EventsFeedItem key={index} {...event} {...props}/>);

    }

    render() {
            return (
                <section>
                    {this.renderItems()}
                </section>
            );
        }

这工作得很好,划分每个 "event" 对象

然后我尝试像这样解构和映射每个事件的 "artists:" 对象:

renderArtists() {

        const { event, venue, venuePicture, when, genres, artists } = this.props.events;

        const props = _.omit(this.props, 'events');
        return  _.map({artists}, (artist, index) => <ItemArtist key={index} {...artist} {...props}/>);

    }

    render() {
        return (
            <ul>
                {this.renderArtists()}
            </ul>
        );
    }

这是我得到的结果,很接近,但不是我需要的:

我需要进一步分离它们以获得:

{artist: "Thor"} {artistPicture: "thor.jpg"}
{artist: "Loki"} {artistPicture: "loki.jpg"}

等等...

我看到这里有一个模式,我只是不知道如何进一步实现它。当我尝试重复相同的解构然后 _.map 事情时,它会中断。任何人都可以帮我解决这个问题,很抱歉 post.

哦,感谢VyvIT的评论(他删除了他的评论),我找到了问题,它在这里:

const { event, venue, venuePicture, when, genres, artists } = this.props.events;
    _.map({artists}, (artist, index) => <ItemArtist key={index} {...artist} {...props}/>);

"artists"不应该解构(大括号),应该是这样的:

_.map(artists, (artist, index) => <ItemArtist key={index} {...artist} {...props}/>);

非常感谢你们!

return _(this.props.events).flatMap('artists').map((artist, index)=><ItemArtist key={index} {...artist} {...props}/>).value();