UI-router 中的 ControllerProvider 导致错误

Question

我有一个 ui-router StateProvider，需要根据外部数据在控制器和视图之间进行选择，所以我使用了 TemplateProvider 和 ControllerProvider。

如果我只有 TemplateProvider 一切正常，但是当我添加 ControllerProvider 时我得到这个错误：

Error: [ng:areq] Argument 'fn' is not a function, got Object
http://errors.angularjs.org/1.3.1/ng/areq?p0=fn&p1=not%20aNaNunction%2C%20got%Object
    at REGEX_STRING_REGEXP (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:80:12)
    at assertArg (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:1577:11)
    at assertArgFn (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:1587:3)
    at annotate (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:3417:5)
    at invoke (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:4096:21)
    at Object.instantiate (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:4129:23)
    at http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:8320:28
    at compile (http://localhost:48510/Scripts/Vendor/AngularUIRouter/angular-ui-router.js:3897:28)
    at invokeLinkFn (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:8081:9)
    at nodeLinkFn (http://localhost:48510/Scripts/Vendor/Angular/1-angular.js:7593:11)

看起来像一些 undefined serviceName 可能（它说得到了对象，但它看起来像 undefined 但我不擅长调试 AngularJs）

这是我的代码：

.state('abstractParent.childState', {
    url: '/childState',
    controllerProvider: ['myService', function (myService) {
        return myService
          .isSpecificMember()
          .then(function (result) {  //this returns a promise of a bool.
            if (result.data) {
                return 'SpecificController';
            } else {
                return 'GeneralController';
            }
        })
    }],
    templateProvider: ['myService', '$templateFactory',
     function (myService, $templateFactory) {
        return myService.isSpecificMember().then(function(result) {
            if(result.data)
            {
                return $templateFactory.fromUrl('SpecificView');
            } else {
                return $templateFactory.fromUrl('GenericView');
            }
        })
    }],
    resolve: {
        thing: ['thingService', function (thingService) { 
            //this is only used in one of the controllers.
            return thingService.getThing();
        }]
    }})

编辑

根据 Radim Köhlers 的回答所做的更改

    .state('abstractParent.childState', {
        url: '/childState',
        resolve: {
            controllerName: ['myService', function (myService) {
                return myService.isSpecificMember().then(function (result) {  //this returns a promise of a bool.
                    if (result.data) {
                        return 'SpecificController';
                    } else {
                        return 'GeneralController';
                    }
                })
            }],
            thing: ['thingService', function (thingService) { //this is only used in one of the controllers.
                return thingService.getThing();
            }]
        },
        controllerProvider: ['controllerName', function (controllerName) {
            return controllerName;
        }],
        templateProvider: ['myService', '$templateFactory', function (myService, $templateFactory) {
            return myService.isSpecificMember().then(function(result) {
                if(result.data)
                {
                    return $templateFactory.fromUrl('SpecificView');
                } else {
                    return $templateFactory.fromUrl('GenericView');
                }
            })
        }]
        })

新错误：

    Error: [$injector:unpr] Unknown provider: controllerNameProvider <- controllerName
    http://errors.angularjs.org/1.3.1/$injector/unpr?p0=controllerNameProvider%20%3C-%20controllerName
        at REGEX_STRING_REGEXP (1-angular.js:80)
        at 1-angular.js:3930
        at Object.getService [as get] (1-angular.js:4077)
        at 1-angular.js:3935
        at getService (1-angular.js:4077)
        at Object.invoke (1-angular.js:4109)
        at angular-ui-router.js:3465
        at processQueue (1-angular.js:12901)
        at 1-angular.js:12917
        at Scope.$get.Scope.$eval (1-angular.js:14110)

解决方案

这至少需要 angular-ui-router.js

的 0.2.14 版本

Answer 1

重点是，controllerProvider 必须 return object 表示 controller 或 string (它的名字)

http://angular-ui.github.io/ui-router/site/#/api/ui.router.state.$stateProvider

stateConfig.controllerProvider (optional) function

Injectable provider function that returns the actual controller or string.

所以，我们不能return承诺...

但是有一个解决办法：

有a working example

我们可以使用内置功能 resolve - 执行异步操作，并使 controllerProvider 成为英雄 - 通过使用它：

  resolve: {
    controllerName: ['$stateParams', '$timeout','$q', 
        function ($stateParams, $timeout, $q)
        {
          var deferred = $q.defer();
           $timeout(function(){ 

            deferred.resolve('MyLazyRevealedCtrl');

          },250);
          return deferred.promise;
        }],

  },
  controllerProvider:['controllerName', function (controllerName)
  {
      return controllerName;
  }],

我们可以看到的是只有一个计时器的简化示例（扮演异步 .then() 的角色）。它会等待一段时间，然后 return 解析控制器名称。

controllerProvider然后（一旦全部解决）只需要结果，return将其作为字符串。

检查一下here

UI-router 中的 ControllerProvider 导致错误

ControllerProvider in UI-router results in error

javascript

angularjs

angular-ui-router

angular-promise