UI路由器中的ControllerProvider导致错误 [英] ControllerProvider in UI-router results in error
问题描述
我有一个 ui-router StateProvider 并且需要在控制器和控制器之间进行选择基于外部数据的视图，所以我使用了 TemplateProvider 和 ControllerProvider.
I have a ui-router StateProvider and need to pick between controllers & views based on external data, so I used TemplateProvider and ControllerProvider.
如果我只有 TemplateProvider 一切正常，但是当我添加 ControllerProvider 时，我收到此错误:
If I only had the TemplateProvider it all works fine, but when I add the ControllerProvider I get this error:
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，但看起来它是 undefined 但我不擅长调试AngularJs)
Looks like some undefined serviceName possibly (it says got object, but it looks like it's undefined but I'm not great at debugging 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 $templateFactory.fromUrl('GenericView');
}
})
}],
resolve: {
thing: ['thingService', function (thingService) {
//this is only used in one of the controllers.
return thingService.getThing();
}]
}})
编辑
基于 Radim Köhlers 答案的变化
Changes based on Radim Köhlers answer
.state('abstractParent.childState', {
url: '/childState',
resolve: {
controllerName: ['myService', function (myService) {
return myService.isSpecificMember().then(function (result) { //this returns a promise of a bool.
if (result.data) {
return 'SpecificController';
} else {
return 'GeneralController';
}
})
}],
thing: ['thingService', function (thingService) { //this is only used in one of the controllers.
return thingService.getThing();
}]
},
controllerProvider: ['controllerName', function (controllerName) {
return controllerName;
}],
templateProvider: ['myService', '$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.$eval (1-angular.js:14110)
解决方案
这至少需要angular-ui-router.js
推荐答案
重点是，controllerProvider 只需要返回代表 controllerobject> 或 string (它的名字)
The point is, that controllerProvider simply must return object representing the controller or string (its name)
http://angular-ui.github.io/ui-router/site/#/api/ui.router.state.$stateProvider
http://angular-ui.github.io/ui-router/site/#/api/ui.router.state.$stateProvider
stateConfig.controllerProvider (可选) 函数
返回实际控制器或字符串的可注入提供程序函数.
Injectable provider function that returns the actual controller or string.
所以，我们不能返回承诺......
So, we cannot return promise...
但是有一个解决方案:
我们可以使用内置功能 resolve - 执行异步操作，并使 controllerProvider 成为英雄 - 通过使用它:
We can use built-in feature resolve - to do the async stuff, and make controllerProvider a hero - by consuming it:
resolve: {
controllerName: ['$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;
}],
我们可以看到一个简单的例子，只有一个计时器(扮演异步 .then() 的角色).它等待一段时间并返回解析的控制器名称.
What we can see is simplified example with just a timer (playing role of async .then()). It waits a while and returns resolved controller name.
controllerProvider 然后 (一旦所有问题都解决了) 只接受该结果，并将其作为细绳.
The controllerProvider then (once all is resolved) just takes that result, and returns it as a string.
在此处查看
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