角+火力地堡+ AngularFire种子指令ShowAdmin [英] Angular + Firebase + AngularFire Seed Directive ShowAdmin
问题描述
首先,我的情况...我的应用是利用Angular.js和AngularFire无需后端运行罗嗦了前期的描述。我使用的火力地堡简单登录认证和AngularFire,种子工程提供了一种简单的方式来获得验证信息。要创建的应用程序的管理员,我存储用户的在我火力地堡/管理员UID,所以我可以检查/管理/ simpleLogin:45存在,例如,看是否与UID simpleLogin用户:45是管理员。
First, a wordy up-front description of my situation... My application is utilizing Angular.js and AngularFire to run without a backend. I am using Firebase Simple Login for authentication, and the AngularFire-Seed project provides a simple way to get auth info. To create an administrator in the application, I'm storing a user's uid in /admin in my Firebase, so I can check if /admin/simpleLogin:45 exists, for example, to see if the user with uid simpleLogin:45 is an admin.
我试图创造一个指令,这将导致当前用户是否是我的应用程序的管理员要显示的元素。我写了一个指令,部分工作,而且我遇到了麻烦扭结制定。我请求您的帮助,勇敢的读者!
I'm trying to create a directive which will cause an element to be shown if the current user is an administrator of my application. I've written a directive that partially works, and I'm having trouble getting the kinks worked out. I request your assistance, gallant reader!
下面是我的指令,code:
Here's my directive code:
'use strict';
/* Directives */
angular.module('myApp.directives', []).
directive('appVersion', ['version', function (version) {
return function (scope, elm, attrs) {
elm.text(version);
};
}])
.directive('bpmShowAdmin', function ($rootScope, $scope, syncData, waitForAuth) {
return {
restrict: 'A',
compile: function (el, attr) {
el.addClass('hide');
waitForAuth.then(function () {
console.log('checking for admin rights');
var admins = syncData('admins');
admins.$on("loaded", function () {
var isAdmin = $rootScope.auth.user.uid in admins;
if (isAdmin) {
console.log('admin rights granted!');
el.toggleClass('hide', !isAdmin);
}
});
});
$rootScope.$on("$firebaseSimpleLogin:logout", function () {
el.toggleClass('hide', true);
});
}
}
});
该指令用于做一点这样的事情:
The directive is used by doing a little something like this:
<li bpm-show-admin>
...
</li>
这工作的大部分时间,但我显然不理解编译/链接阶段或类似的东西。当我第一次登录到我的应用程序,它并不总是显示的应该是可见的,当我登录的管理员的一切。它的工作原理刷新或两个后,所以有某种竞争条件或问题与我把指令的逻辑在哪里(编译与链接与控制器)。
This works most of the time, but I'm clearly not understanding the compile/link phases or something like that. When I first log into my application, it doesn't always show everything that's supposed to be visible when I'm logged in as an admin. It works after a refresh or two, so there's some kind of race condition or issue with where I'm putting the directive logic (compile vs. link vs. controller).
我一直在使用AngularFire种子项目的ngShowAuth作为一个例子,我相信是由臭名昭著的katowulf发展。 下面是code 的例子
I've been using the AngularFire-seed project's ngShowAuth as an example, which I believe was developed by the infamous katowulf. Here's an example of that code
我在做什么错误和/或不理解?
What am I doing incorrectly and/or not understanding?
感谢您的帮助!
推荐答案
我就开始启动小提琴得到进一步的帮助,但我结束了在小提琴建立我的过于复杂的局面才刚刚生气了,解决了这个该死的事情我自己。以下是我想出了:
I began to start a fiddle to get further help, but I wound up just getting pissed off at setting up my overly complex situation in a fiddle and solved the damn thing myself. Here's what I came up with:
'use strict';
angular.module('bpmWaitForAdmin', [])
.service('bpmWaitForAdmin', function ($rootScope, syncData, waitForAuth) {
return {
init: function (auth) {
$rootScope.$on('$firebaseSimpleLogin:login', function (e, user) {
var admins = syncData('admins');
admins.$on("loaded", function () {
if (user.uid in admins) {
$rootScope.$broadcast('bpmWaitForAdmin:true');
}
else {
$rootScope.$broadcast('bpmWaitForAdmin:false');
}
});
});
$rootScope.$on('$firebaseSimpleLogin:logout', function () {
$rootScope.$broadcast('bpmWaitForAdmin:false');
});
}
};
})
.directive('bpmShowAdmin', function ($rootScope, $timeout) {
return {
restrict: 'A',
compile: function (element, attributes) {
element.addClass('hide');
$rootScope.$on("bpmWaitForAdmin:true", function () {
$timeout(function () {
element.removeClass('hide');
});
});
$rootScope.$on("bpmWaitForAdmin:false", function () {
$timeout(function () {
element.addClass('hide');
});
});
}
}
});
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