Clearing input field on firebase function after angular submit - angularjs

Question

The function works and submits the user input to my firebase "back-end" but I cannot figure out a clear function to empty out the input field after using ng-submit. The input is tied to the var "emailInput" with ng-model. Thanks for any suggestions!
var newEmailref = new Firebase("https://nevermind.com");
$scope.email = $firebaseArray(newEmailref);
$scope.addEmail = function(email) {
$scope.email.$add(email);
$scope.emailInput = '';
};

Answer 1

I needed to assign a key to the email input and also an empty object.
$scope.emailInput = {};
var newEmailref = new Firebase("https://archerthedog.firebaseio.com/email");
$scope.email = $firebaseArray(newEmailref);
$scope.addEmail = function(email) {
$scope.email.$add(email);
$scope.emailInput = {};
};

Answer 2

See the Full code of mine it's working for me
var ref = firebase.database().ref();
var firebasedata = $firebaseObject(ref);
var messagesRef = ref.child("storeUserData");
var data = $firebaseArray(messagesRef)
$scope.createItem= function(user) {
data.$add(user).then(function(data) {
$scope.user = "";
var myPopup = $ionicPopup.show({
title: 'Dear User, Your Account has created Successfully',
});
$timeout(function() {
myPopup.close(); //close the popup after 6 seconds for some reason
}, 6000);
});
}
ref.orderByValue().on("value", function(data) {
data.forEach(function(takenData) {
console.log("The " + takenData.key + " rating is " +
takenData.val().email);
});
});

Answer 3

Your code just needs a small modification to use $scope.email = ""; instead of $scope.emailInput = '';:
var newEmailref = new Firebase("https://nevermind.com");
$scope.email = $firebaseArray(newEmailref);
$scope.addEmail = function(email) {
$scope.email.$add(email);
$scope.email = '';
};

Answer 4

i didn't get you.... If add a item in firebase database the database will create key value,
if you doing like this
var ref = firebase.database().ref('players/');
ref.orderByValue().on("value", function(data) {
data.forEach(function(takenData) {
console.log("The " + takenData.key + " rating is " +
takenData.val().email);
});
});
The console.log answer will be for takenData.key is some id value like
(-Ko7cGuymlshrS2JQEEC)
Then takenData.val().email) is an email address...