<form name="loginForm" ng-controller="LoginController"
ng-submit="login(credentials)" novalidate>
<label for="username">Username:</label>
<input type="text" id="username"
ng-model="credentials.username">
<label for="password">Password:</label>
<input type="password" id="password"
ng-model="credentials.password">
<button type="submit">Login</button>
</form>
.controller('LoginController', function ($scope, $rootScope, AUTH_EVENTS, AuthService) {
$scope.credentials = {
username: '',
password: ''
};
$scope.login = function (credentials) {
AuthService.login(credentials).then(function (user) {
$rootScope.$broadcast(AUTH_EVENTS.loginSuccess);
$scope.setCurrentUser(user);
}, function () {
$rootScope.$broadcast(AUTH_EVENTS.loginFailed);
});
};javascript:void(0);
})
.constant('AUTH_EVENTS', {
loginSuccess: 'auth-login-success',
loginFailed: 'auth-login-failed',
logoutSuccess: 'auth-logout-success',
sessionTimeout: 'auth-session-timeout',
notAuthenticated: 'auth-not-authenticated',
notAuthorized: 'auth-not-authorized'
})
.constant('USER_ROLES', {
all: '*',
admin: 'admin',
editor: 'editor',
guest: 'guest'
})
.factory('AuthService', function ($http, Session) {
var authService = {};
authService.login = function (credentials) {
return $http
.post('/login', credentials)
.then(function (res) {
Session.create(res.data.id, res.data.user.id,
res.data.user.role);
return res.data.user;
});
};
authService.isAuthenticated = function () {
return !!Session.userId;
};
authService.isAuthorized = function (authorizedRoles) {
if (!angular.isArray(authorizedRoles)) {
authorizedRoles = [authorizedRoles];
}
return (authService.isAuthenticated() &&
authorizedRoles.indexOf(Session.userRole) !== -1);
};
return authService;
})
.service('Session', function () {
this.create = function (sessionId, userId, userRole) {
this.id = sessionId;
this.userId = userId;
this.userRole = userRole;
};
this.destroy = function () {
this.id = null;
this.userId = null;
this.userRole = null;
};
return this;
})
<body ng-controller="ApplicationController"> ... </body>
.controller('ApplicationController', function ($scope,
USER_ROLES,
AuthService) {
$scope.currentUser = null;
$scope.userRoles = USER_ROLES;
$scope.isAuthorized = AuthService.isAuthorized;
$scope.setCurrentUser = function (user) {
$scope.currentUser = user;
};
})
<div ng-if="currentUser">Welcome, {{ currentUser.name }}</div>
<div ng-if="isAuthorized(userRoles.admin)">You're admin.</div>
<div ng-switch on="currentUser.role">
<div ng-switch-when="userRoles.admin">You're admin.</div>
<div ng-switch-when="userRoles.editor">You're editor.</div>
<div ng-switch-default>You're something else.</div>
</div>
.config(function ($stateProvider, USER_ROLES) {
$stateProvider.state('dashboard', {
url: '/dashboard',
templateUrl: 'dashboard/index.html',
data: {
authorizedRoles: [USER_ROLES.admin, USER_ROLES.editor]
}
});
})
.run(function ($rootScope, AUTH_EVENTS, AuthService) {
$rootScope.$on('$stateChangeStart', function (event, next) {
var authorizedRoles = next.data.authorizedRoles;
if (!AuthService.isAuthorized(authorizedRoles)) {
event.preventDefault();
if (AuthService.isAuthenticated()) {
// user is not allowed
$rootScope.$broadcast(AUTH_EVENTS.notAuthorized);
} else {
// user is not logged in
$rootScope.$broadcast(AUTH_EVENTS.notAuthenticated);
}
}
});
})
.config(function ($httpProvider) {
$httpProvider.interceptors.push([
'$injector',
function ($injector) {
return $injector.get('AuthInterceptor');
}
]);
})
.factory('AuthInterceptor', function ($rootScope, $q,
AUTH_EVENTS) {
return {
responseError: function (response) {
$rootScope.$broadcast({
401: AUTH_EVENTS.notAuthenticated,
403: AUTH_EVENTS.notAuthorized,
419: AUTH_EVENTS.sessionTimeout,
440: AUTH_EVENTS.sessionTimeout
}[response.status], response);
return $q.reject(response);
}
};
})
.directive('loginDialog', function (AUTH_EVENTS) {
return {
restrict: 'A',
template: '<div ng-if="visible"
ng-include="\'login-form.html\'">',
link: function (scope) {
var showDialog = function () {
scope.visible = true;
};
scope.visible = false;
scope.$on(AUTH_EVENTS.notAuthenticated, showDialog);
scope.$on(AUTH_EVENTS.sessionTimeout, showDialog)
}
};
})
<div login-dialog ng-if="!isLoginPage"></div>
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