[英]Render JSX elements within a function
很抱歉,如果問題的措詞很奇怪,還不太知道如何形容。 我正在嘗試制作它,因此當您單擊專輯名稱時,它會顯示該專輯的所有曲目; 目前,它可以正常登錄到控制台,但是當我嘗試渲染它時,僅顯示一個軌道名稱,或者根本不顯示任何軌道(這是我當前所在的位置)。 這是我的搜索組件,所有幫助都將不勝感激。
export default class SearchScreen extends Component {
constructor() {
super();
this.state = {
value: '',
searchClicked: false,
backClicked: false,
albumInfoClicked: false,
searchAlbums: {
response: []
},
albums: [],
tracks: ['']
};
this.handleChange = this.handleChange.bind(this);
this.searchAlbums = this.searchAlbums.bind(this);
}
handleChange(event) {
this.setState({
value: event.target.value
});
}
//Gets list of albums
searchAlbums() {
spotifyWebApi.searchAlbums(this.state.value)
.then((response) => {
this.setState({
albums: response.albums.items ,
searchClicked: true,
});
});
}
render() {
var albumTrackInfo = [];
var albumInfoClicked = false;
//this is the part that matters
if(searchClicked) {
return this.state.albums.map((t, counter) => {
return t.artists.map((artistsArray) => {
var albumID = t.id;
const albumInfo = () => {
albumInfoClicked = true;
console.log(albumID)
//Gets list of tracks for the album ID
spotifyWebApi.getAlbumTracks(albumID)
.then(response => {
albumTrackInfo = response.items
return albumTrackInfo.map((albumTracks) => {
this.setState({
tracks: albumTracks.name,
albumInfoClicked: true
})
//this isnt getting renderd
return (
<div>
<li>{this.state.tracks}</li>
</div>
)
})
})
}
return (
<div class="result-container row">
<div class="row">
<img src={t.images[0].url} alt={t.name} class="image" height="256px" width="256px" data-toggle="tooltip" data-placement="top" title="Hooray!" /> {counter}
<div class="middle">
<div key={t.name} class="text">
<a href="#" onClick={() => albumInfo()}> {t.id} <br></br> {t.name} </a><br></br>
By: {artistsArray.name} <br></br>
<i class="fas fa-play"></i>
</div>
</div>
</div>
</div>
)
});
});
}
我不熟悉Spotify API,但我想問題可能出在這條邏輯上
spotifyWebApi.getAlbumTracks(albumID)
.then(response => {
albumTrackInfo = response.items
return albumTrackInfo.map((albumTracks) => {
this.setState({
tracks: albumTracks.name,
albumInfoClicked: true
})
您正在將軌道的狀態設置為一個特定的軌道名稱。 也許您想嘗試這樣的事情( 更新 )
spotifyWebApi.getAlbumTracks(albumID)
.then(response => {
albumTrackInfo = response.items
let songsObject = albumTrackInfo.reduce((acc, val) => {
const name = val.name;
return {
...acc,
[name]: name
};
}, {});
let songsArray = Object.keys(songsObject);
this.setState({
tracks: songsArray
})
})
這應該為您提供該api中所有歌曲名稱的數組,並更新音軌的狀態。
更新
Damian G.我想您可能更喜歡以這種方式獲取數據-這將為您提供一系列歌曲名稱作為字符串。
spotifyWebApi.getAlbumTracks(albumID)
.then(response => {
albumTrackInfo = response.items
let newArray = albumTrackInfo.map((albumTrack) => {return albumTrack.name});
this.setState({
tracks: newArray
})
})
或者從風格上講是一個更好的解決方案:
spotifyWebApi.getAlbumTracks(albumID)
.then(response => {
albumTrackInfo = response.items
let songsArray = albumTrackInfo.map((albumTrack) => {return albumTrack.name});
return songsArray;
}).then(songsArray => {
this.setState({
tracks: songsArray
})
})
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