I want to do a custom login for a demo of my doing, but I encountered a problem.
I use the username to access a reference url inside Firebase, I get a returned object. If I want to access a single attribute, I get the undefined value, but if I add in my html {{returnedObj.name}}
the value is displayed.
Why is that?
angular.module('Demo').controller('loginCtrl', ['$scope', '$firebase', '$location', function($scope, $firebase, $location){
$scope.user = {};
$scope.check = function(){
console.log('https://fabritzio-demo.firebaseio.com/users/' + $scope.user.name);
$scope.returnedObj = $firebase(new Firebase('https://fabritzio-demo.firebaseio.com/usuarios/' + $scope.user.name)).$asObject();
alert($scope.returnedObj.name); // returns undefined value
};
}]);
Firebase values are loaded asynchronously. The value will not yet have been loaded into $scope.returnedObj
when the alert
fires.
There are a couple of ways to handle values loading asynchronously from Firebase, for example using $loaded
to get a promise:
$scope.returnedObj.$loaded().then(function () {
alert($scope.returnedObj.name);
});
The value is displayed in the template because Angular watches all $scope
variables for changes. When the value is loaded (milliseconds later), it is immediately displayed.
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