使用Cloud Functions添加子级？

Question

How do I add a child after .onWrite using Cloud Functions?

Code skeleton:

exports.addNewValue = functions.database.ref('/messages/{pushId}')
.onWrite(event => {
// add child newValue: "randomValue" to the newly added key above

Answer 1

If you want to update the database at the same location where the change occurred with some key/value pair:

event.data.adminRef.update({key:"value"})

I suggest also getting acquainted with the documentation for how to work with database triggers , and how to write to Realtime Database using the JavaScript API.