一尘不染

UI路由器中的ControllerProvider导致错误

angularjs

我有一个,ui-router
StateProvider并且需要根据外部数据在控制器和视图之间进行选择,因此我使用TemplateProviderControllerProvider

如果我只有TemplateProvider它,一切都很好,但是当我添加时,ControllerProvider会出现此错误:

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)

undefined serviceName可能看起来有些像(它说有对象,但看起来像,undefined但是我不太擅长调试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

基于RadimKöhlers答案的更改

    .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)

这至少需要版本0.2.14angular-ui-router.js


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2020-07-04

共1个答案

一尘不染

问题是,这controllerProvider只是必须返回 对象 代表controllerstring (它的名字)

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

stateConfig.controllerProvider (可选) 功能

返回实际 控制器字符串的可 注入提供程序函数。

因此,我们无法兑现承诺…

但是有一个解决方案:

一个可行的例子

我们可以使用内置的功能 解析 -通过使用异步功能来完成异步工作,并使其controllerProvider成为英雄-

  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;
  }],

我们看到的是仅带有计时器的简化示例(扮演async的角色 .then() )。等待一会儿,然后返回解析的控制器名称。

controllerProvider 随后 (一旦全部解决) 只需要这一结果,并返回一个字符串。

在这里检查

2020-07-04