大孩子的儿童手表上的Firebase

Question

foo:{
    'uid1':{
        'push1':'bar1'
        'push1':'bar1'
        'push1':'bar1' // watch for child added here
    },
    'uid2':{
        'push1':'bar1'
        'push1':'bar1'
        'push1':'bar1' // watch for child added here
    },
}

Given the schema above, how do I get new child_added under the uid1 or uid2 while watching for foo ?

dbRef.child('foo')
    .on('child_added', snap => {
        console.log(snap.key);
        console.log(snap.val());
    });

I have this query above, but it only fires when the new data is added directly under foo but not when the data is added to foo 's children.

Thanks.

Answer 1

You'd have to wire up another listener for the children:

dbRef.child('foo')
    .on('child_added', snap => {
        console.log(snap.key);
        console.log(snap.val());
        dbRef.child('foo').child(snap.key)
            .on('child_added', snap => {
                console.log(snap.key);
                console.log(snap.val());
            });
    });