如何从firebase创建流数据以做出反应？

Question

我正在尝试连接 firebase 实时数据库以使用通量做出反应，我不包括只是为了缩短代码的操作，我的代码：

// in React parent component
componentDidMount() {
    // connecting to firebase when component completely mounted
    rootRef.child('nodes').on('value', snap => {
        // passing snap to Store and emiting changes
        Store.inject(snap)
    })
    Store.on('connect', this.listenDatabase)
}

listenDatabase() {
    this.setState({
        dataReceived: true,
        rootData: Store.getRootData()
    })
}


// in Store.js
inject(snap) {
    const data = snap.val();
    // do something with data
    // ...
    this.result = /* some data turned into array or object */
    this.emit('connect')
}

我的代码有效，但问题是这个流程是好的做法吗？

Answer 1

你需要写getRootData函数

// in Store.js
    inject(snap) {
    const data = snap.val();    // do something with data    // ...    this.result = /* some data turned into array or object */    this.emit('connect')

     getRootData(){
        return this.result
     }