我在Angular获得了一项服务:
App.factory('AuthService', function ($q, $http, CredentialStorage) {
var _endpoint = 'http://localhost:3000';
return {
login: function (credentials) {
return $http
.post('/api/users/login', credentials)
.success(function (apiResult) {
var deferred = $q.defer();
if (apiResult.code == 0) {
$scope.user = apiResult.context;
CredentialStorage.store(apiResult.context);
}
return deferred.promise;
})
.fail(function(apiResult, status, headers) {
var deferred = $q.defer();
return deferred.promise;
});
},
....});
我在哪里验证并将用户存储在某个cookie或其他任何内容中(这是不相关的)。
然后在我的控制器上我得到了:
App.controller('LoginController', function ($scope, $rootScope, AuthService) {
var _login = function($event) {
$event.preventDefault();
AuthService.login($scope.l).then(function() {
alert('aaa');
if (!AuthService.authenticatedUser) {
$scope.errors = ['Invalid username and password. Please try again.'];
alert($scope.errors);
} else {
alert('a' + $scope.errors);
}
})
}
$scope.login = _login;
});
由于某种原因,我的控制器不会执行。那是为什么?
由于
答案 0 :(得分:1)
嗯,简单的答案是:你使用.then
代替success
而不是App.factory('AuthService', function ($q, $http, CredentialStorage) {
var _endpoint = 'http://localhost:3000';
return {
login: function (credentials) {
return $http
.post('/api/users/login', credentials)
.then(function (response) {
var apiResult = response.data;
if (apiResult.code == 0) {
CredentialStorage.store(apiResult.context);
return apiResult.context; // promises let you return the value
}
throw new Error("Authentication failed"); // return $q.reject
// if you don't want to invoke
// exceptionHandler
});
},
....});
只添加一个监听器:
AuthService.login($scope.l).then(function(result) {
$scope.user = result;
}).catch(function(err){
// code to handle the case authorization failed or the API call failed
});
可以让你这样做:
{{1}}
从关注角度的角度分离来看,修改服务/工厂/提供商中的UI范围通常是不好的。最好返回结果。