Question

我正在使用Angular UI-Router在我的前端应用程序中实现状态。我的抽象基础状态上有一个resolve组，我从所有子状态延伸出来，但我遇到了问题：

我看了这个Q / A： How do I access the 'resolve' property of a UI-Router root state from $stateChangeStart? ......但它并没有真正回答我的问题。这是代码：

.state('app', {
    abstract: true,
    url: '/',
    templateUrl: 'build/views/layout/master.html',
    data: {
        doesRequireLogin: true
    },
    resolve: {
        principalRoles: function($q, User, RoleMapping, $rootScope) {

            var deferred = $q.defer();

            // Grab the current user, then attempt to find their roles
            User.getCurrent(
                function foundUser(user) {

                    RoleMapping.find({
                        filter: {
                            where: {
                                principalId: user.id
                            },
                            include: 'role'
                        }
                    }, function hasRoles(roleMappings) {

                        // Reduce the roles list to just the names of the roles
                        var rolesList = roleMappings.map(function(mapping) {
                            return mapping.role ? mapping.role.name : '';
                        });

                        $rootScope.user.roles = rolesList;

                        return deferred.resolve(rolesList);

                    }, function hasError(error) {
                        return deferred.reject(error);
                    });

                },
                function userError(error) {
                    return deferred.reject(error);
                }
            );
            return deferred.promise;

        }
    }
})

这很好用，似乎返回了我需要的信息。不过我的问题是在我的.run块中，我有以下代码：

// Intercept state changes to see if we need to log in
$rootScope.$on('$stateChangeStart', function (event, toState,   toParams
                                                   , fromState, fromParams) {

    console.log(arguments);

    var requireLogin = toState.data.doesRequireLogin;
    console.log(toState.data.principalRoles);

    try {
        // this only works because i assign this in the state, 
        // probably not the best idea, 
        // and besides it only works *after* the first page load, never initially
        console.log($rootScope.user.roles);
    }
    catch(e) {}

    if (requireLogin && !$rootScope.isAuthenticated) {
        event.preventDefault();
        $state.go('auth')
    }

});

这仅适用于初始页面加载后的后续状态更改，您能想到如何为所有实例返回当前用户的角色吗？

Answer 1

我在以下问题中按照Radim的回答解决了这个问题： https://stackoverflow.com/a/26702638/1679310

Angular UI-Router - 以root状态解析数据并在$ stateChangeStart中使用

1 个答案: