[V3] Enhancement - support ref.parent with snapshot

[florianbepunkt]

I noticed that you can't get the parent of a reference as in JS SDK: https://firebase.google.com/docs/reference/js/firebase.database.Reference#parent

in my specific case I need to get the parent path/key from a snapshot, which in JS SDK I would do liek this

function (snapshot) {
   snapshot.ref().parent().key;
}

EDIT: To clarify… when I have a normal database ref, getting the key of the parent works. but not with a snapshot.

[florianbepunkt]

digging through code I noticed that snapshot.ref returns a Database object and not a Reference Object.

[Ehesp]

Salakar@57df078

[Salakar]

@florianbepunkt this has been implemented on my fork as per web API it's a getter method, so usage is slightly diff from your example:

function(snapshot) {
  const parentRef = snapshot.ref.parent;
  // ... do something else
}

https://github.com/Salakar/react-native-firestack/blob/master/lib/modules/database/reference.js#L292

Closing as now complete.

[Salakar]

@florianbepunkt actually my bad, thought this was fixed, it wasn't, just pushed a fix so it is now =]

I also added a ton of missing snapshot methods, .child(), .hasChild() .hasChildren() etc..

[florianbepunkt]

@Salakar Great, thank you. Hope I can check it out soon.