我正在尝试验证用户是否已登录。最初，我按照Firebase文档中的说明使用了$scope.use，$scope.user.uid，$scope.getCurrenUser()，但我认为我的依赖关系错误。
代码： myApp.js https://gist.github.com/sebbe605/2b9ff7d3b798a58a3886
firebase.js https://gist.github.com/sebbe605/f9e7b9a75590b3938524
如果我理解正确，程序无法知道我指的是Firebase用户。澄清我希望.controller('templateCtrl',function($scope, $firebase)能够在用户登录时显示某个按钮。
- 更新1-- 所以，我已经更新了我的文件，据我所知，这应该有用。以前的代码就像上面的gits一样，以增强其优势。
myApp.js
angular.module('myApp', [
'ngRoute',
'firebase'
])
.config(['$routeProvider', function($routeProvider) {
$routeProvider
.when('/template',
{
templateUrl:'partials/template.html', controller:'templateCtrl'
});
$routeProvider
.when('/login',
{
templateUrl:'partials/login.html', controller:'signupCtrl'
});
$routeProvider
.when('/signup',
{
templateUrl:'partials/signup.html', controller:'signupCtrl'
});
$routeProvider
.when('/user',
{
templateUrl:'partials/user.html', controller:'userCtrl'
});
$routeProvider
.otherwise('/template');
}])
controllers.js
'use strict';
angular.module('myApp').controller('signupCtrl', function($scope, $http, angularFire, angularFireAuth){
$scope.loginBusy = false;
$scope.userData = $scope.userData || {};
var ref = new Firebase('https://boostme.firebaseio.com/');
angularFireAuth.initialize(ref, {scope: $scope, name: 'user'});
/*//////////////LOGIN - LOGOUT - REGISTER////////////////////*/
$scope.loginEmailText = "Email"
$scope.loginPasswordText = "Password"
$scope.login = function() {
$scope.loginMessage = "";
if ((angular.isDefined($scope.loginEmail) && $scope.loginEmail != "") && (angular.isDefined($scope.loginPassword) && $scope.loginPassword != "")) {
$scope.loginBusy = true;
angularFireAuth.login('password', {
email: $scope.loginEmail,
password: $scope.loginPassword
});
} else {
$scope.loginPassword = ""
$scope.loginPasswordText = "Incorrect email or password"
}
};
$scope.logout = function() {
$scope.loginBusy = true;
$scope.loginMessage = "";
$scope.greeting = "";
$scope.disassociateUserData();
$scope.userData = {};
angularFireAuth.logout();
};
$scope.emailText = "Email"
$scope.passwordText = "Password"
$scope.confirmPasswordText = "Confirm Password"
$scope.register = function() {
$scope.loginMessage = "";
if ((angular.isDefined($scope.email) && $scope.email != "") && (angular.isDefined($scope.password0) && $scope.password0 != "" && $scope.password0 == $scope.password1)) {
$scope.loginBusy = true;
angularFireAuth.createUser($scope.email, $scope.password0, function(err, user) {
if (user) {
console.log('New User Registered');
}
$scope.loginBusy = false;
});
} else {
$scope.password0 =""
$scope.password1 =""
$scope.passwordText = "Password Not Matching"
$scope.confirmPasswordText = "Password Not Matching"
}
};
$scope.$on('angularFireAuth:login', function(evt, user) {
$scope.loginBusy = false;
$scope.user = user;
console.log("User is Logged In");
angularFire(ref.child('users/' + $scope.user.id), $scope, 'userData').then(function(disassociate) {
$scope.userData.name = $scope.userData.name || {};
if (!$scope.userData.name.first) {
$scope.greeting = "Hello!";
} else {
$scope.greeting = "Hello, " + $scope.userData.name.first + "!";
}
$scope.disassociateUserData = function() {
disassociate();
};
});
});
$scope.$on('angularFireAuth:logout', function(evt) {
$scope.loginBusy = false;
$scope.user = {};
console.log('User is Logged Out');
});
$scope.$on('angularFireAuth:error', function(evt, err) {
$scope.greeting = "";
$scope.loginBusy = false;
$scope.loginMessage = "";
console.log('Error: ' + err.code);
switch(err.code) {
case 'EMAIL_TAKEN':
$scope.loginMessage = "That email address is already registered!";
break;
case 'INVALID_PASSWORD':
$scope.loginMessage = "Invalid username + password";
}
});
})
输出：
Error: [$injector:unpr] Unknown provider: angularFireProvider <- angularFire
http://errors.angularjs.org/1.3.0-rc.3/$injector/unpr?p0=angularFireProvider%20%3C-%20angularFire
at http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:80:12
at http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:3938:19
at Object.getService [as get] (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:4071:39)
at http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:3943:45
at getService (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:4071:39)
at invoke (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:4103:13)
at Object.instantiate (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:4123:23)
at http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:7771:28
at link (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular-route.js:938:26)
at invokeLinkFn (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.js:7549:9) <div ng-view="" class="ng-scope">
(anonymous function) angular.js:10683
(anonymous function) angular.js:7858
invokeLinkFn angular.js:7551
nodeLinkFn angular.js:7069
compositeLinkFn angular.js:6441
publicLinkFn angular.js:6320
boundTranscludeFn angular.js:6461
controllersBoundTransclude angular.js:7096
update angular-route.js:896
Scope.$broadcast angular.js:13751
(anonymous function) angular-route.js:579
processQueue angular.js:12234
(anonymous function) angular.js:12250
Scope.$eval angular.js:13436
Scope.$digest angular.js:13248
Scope.$apply angular.js:13540
done angular.js:8884
completeRequest angular.js:9099
xhr.onreadystatechange angular.js:9038
我无法弄清问题是什么。但是我认为有一些问题：但我无法分辨。如果需要更多信息，我很乐意发布。
答案 0 :(得分：1)
我最初采用与处理特权操作相同的if-then-else方法。但事实证明，这不是使用Angular时的最佳方法。不要使用if-then-else方法，而是尝试将问题重构为隔离特权代码的解决方案。
所以你的原始问题是关于只有当用户登录时才显示HTML元素，这在控制器中很简单：
$scope.auth = $firebaseSimpleLogin(new Firebase(FBURL));
此行将Firebase登录状态绑定到当前范围，这使其可供视图使用。不需要if-then-else，因为总是有登录状态。 AngularFire确保在该状态发生变化时通知视图，因此我们所要做的就是确保我们有HTML标记来处理经过身份验证的用户的存在与否：
<div ng-controller="TrenchesCtrl" class='auth'>
<div ng-show="auth.user">
<p>You are logged in as <i class='fa fa-{{auth.user.provider}}'></i> {{auth.user.displayName}}</p>
<button ng-click="auth.$logout()">Logout</button>
</div>
<div ng-hide="auth.user">
<p>Welcome, please log in.</p>
<button ng-click="auth.$login('twitter')">Login with <i class='fa fa-twitter'> Twitter</i></button>
<button ng-click="auth.$login('github')">Login with <i class='fa fa-github'> GitHub</i></button>
</div>
</div>
看看它几乎就像是if-then-else？但是没有我编写试图检测用户是否登录的代码。这是由AngularJS和AngularFire以声明方式处理的。
当您确实需要执行特权操作时，我发现最容易隔离这样的代码：
function updateCard(id, update) {
var auth = $firebaseSimpleLogin(new Firebase(FBURL));
auth.$getCurrentUser().then(function(user) {
update.owned_by = user.username;
var sync = $firebase(ref.child('cards').child(id));
sync.$update(update);
});
};
请注意，这些是来自my Trenches app（demo）的（简化）片段，我写这些片段是为了更多地了解Angular和AngularFire。