我尝试使用用户的uid
将一些内容插入我的Firebase数据库,但由于某种原因它未定义。看看下面的代码:
主页控制器在页面加载时设置用户的数据信息(authData
):
flickrApp.controller('mainCtrl', ['$scope', '$rootScope', '$firebase', 'Auth', 'shared', function($scope, $rootScope, $firebase, Auth, shared) {
Auth.$onAuth(function(authData) {
shared.setAuth(authData);
$scope.authData = shared.getAuth();
});
}]);
处理身份验证状态并在我的控制器之间共享的服务:
flickrApp.service('shared', function() {
var authentication = false;
return {
getAuth: function () {
return authentication;
},
setAuth: function (auth) {
authentication = auth;
}
};
});
这是我的代码控制器中无法正常工作的地方。我在$scope.authData
函数中正确设置了$watch
,但当我尝试在var ref
行中使用它时,它表示$scope.authData
未定义(因此我可以&#39} ; t访问uid
)。我无法弄清楚为什么它不能正常工作......
我是否必须将$apply
与观察者功能一起使用或出现什么问题?
flickrApp.controller('tagsCtrl', ['$scope', '$rootScope', '$firebase', 'shared', function($scope, $rootScope, $firebase, shared) {
$scope.tagsList = [];
$scope.shared = shared;
$scope.$watch('shared.getAuth()', function(authData) {
$scope.authData = authData;
console.log($scope.authData);
});
var ref = new Firebase ('https://flickr.firebaseio.com/users/' + $scope.authData.uid);
var sync = $firebase(ref);
$scope.addTag = function(tag) {
$scope.tagsList.push(tag);
sync.$set({favoriteTags: $scope.tagsList});
}
}]);
答案 0 :(得分:1)
我认为问题是,在$ watch中设置$ scope.authData的数据之前,已完成对ref的赋值。尝试将您的代码更改为:
flickrApp.controller('tagsCtrl', ['$scope', '$rootScope', '$firebase', 'shared', function($scope, $rootScope, $firebase, shared) {
$scope.tagsList = [];
$scope.shared = shared;
var ref,sync;
$scope.$watch('shared.getAuth()', function(authData) {
$scope.authData = authData;
console.log($scope.authData);
if($scope.authData){
ref = new Firebase ('https://flickr.firebaseio.com/users/' + $scope.authData.uid);
sync = $firebase(ref);
}
});
$scope.addTag = function(tag) {
$scope.tagsList.push(tag);
sync.$set({favoriteTags: $scope.tagsList});
}
}]);