相关疑难解决方法(0)

在Cloud Functions for Firebase中,例如:

exports.makeUppercase = functions.database.ref('/messages/{pushId}/original')
    .onWrite(event => {
    //how to access data at another node, for example 
    //important/messages/{pushId}
})

例如,如何在另一个节点读取数据/important/messages/{pushId}？谢谢