Firebase simple REST DELETE? - angularjs

Question

My data in firebase looks like the below. I am reading https://www.firebase.com/docs/rest/api/ and its weird, I am trying to remove an item.
burning-*
contacts
-K7qAf6egBeg5l3e_Gjc
name: "Ind"
phonenumber: "(408) ***-***"
uid: "1"
-K7qB8Afu7bIm9LUtV68
name: "Paul Bhayya"
phonenumber: "(408) ***-***"
uid:"2"
Inside angular.js I am making this call inside a custom directive of mine.
$http.delete(Firebaseurl + '/contacts/'+scope.contact.name+'/.json').then(function(result) {
console.log(result);
});
The api is not making sense to me, I see the problem might be that my data is now nested inside a key with a weird ID i.e -K7qAf6egBeg5l3e_Gjc.
So I am wondering how can I make a call to delete an item by the key name so if client side that contact is clicked say Ind gets clicked then I tell Firebase to delete the contact with that name. Maybe ID is better, but whatever works.
EDIT:
FYI I parsed the Firebase object selectedContacts is the result of the GET method for the objects. It wasnt formatted very well for my angular code so I turned it into a clean array of objects and I am using it to compare to other set of data to pass into the $scope
Object.keys(selectedContacts.data).forEach(function(key) {
selectedContactsArray.push(selectedContacts.data[key]);
});
selectedContactsArray.filter( function( item ) {
for( var i=0, len=usersContacts.length; i<len; i++ ){
if( usersContacts[i].name == item.name ) {
usersContacts[i]['selectedContact'] = true
}
}
});

Answer 1

To get a user by their name:
...firebaseio.com/contacts.json?orderBy="name"&equalTo="Ind"&limitToFirst=1
You'll have to add an index to your security rules:
{
"rules": {
"contacts": {
".indexOn": ["name"]
}
}
}
With this index, the query will return an object like this:
{
"-K7qAf6egBeg5l3e_Gjc": {
"name": "Ind",
"phonenumber": "(408) ***-***",
"uid": "1"
}
}
You can read the key from there and then execute a REST DELETE request against
...firebaseio.com/contacts/-K7qAf6egBeg5l3e_Gjc.json
But as discussed in the comments to your question, you can also use AngularFire to do the same.