我正在面临一个问题,将控制器转换为准备我的Angular 2应用程序的组件,但迁移不顺利的问题,我有ui路由器在状态之间路由,并在几个控制器中使用解决方案,带控制器的版本正在工作,但组件的版本现在在工作,我遵循了很多指南,似乎我正在做好代码,但它不适合我.
我有以下模块与控制器:
(function () { 'use strict'; angular .module('app.sample',[]) .config(config); /** @ngInject */ $stateProvider .state('app.sample',{ url : '/sample',views : { 'content@app': { templateUrl: 'app/main/sample/sample.html',controller : 'SampleController as vm' } },resolve: { SampleData: function (myService) { return myService.getSample(); // I return a promise here } } }); } })();
控制器:
(function () { 'use strict'; angular .module('app.sample') .controller('SampleController',SampleController); /** @ngInject */ function SampleController(SampleData) { var vm = this; vm.helloText = SampleData.data.helloText; } })();
上面的代码工作得很好,但是在将其作为组件之后,它变成如下:
(function () { 'use strict'; angular .module('app.sample',[]) .config(config); /** @ngInject */ function config($stateProvider) { // State $stateProvider .state('app.sample',{ url: '/sample',views: { 'content@app': { template: '<sample></sample>' } },resolve: { SampleData: function (myService) { return myService.getSample(); // I return a promise here } } }); } })();
零件:
(function () { 'use strict'; angular .module('app.sample') .component('sample',{ templateUrl: 'app/main/sample/sample.html',bindings: { },controller: Sample }); /** @ngInject */ function Sample(SampleData) { var $ctrl = this; $ctrl.helloText = SampleData.data.helloText; } })();
但现在它不工作,并给我以下错误:
Error: [$injector:unpr] Unknown provider: SampleDataProvider <- SampleData http://errors.angularjs.org/1.5.7/$injector/unpr?p0=SampleDataProvider%20%3C-%20SampleData at angular.js:68 at angular.js:4502 at Object.getService [as get] (angular.js:4655) at angular.js:4507 at getService (angular.js:4655) at injectionArgs (angular.js:4679) at Object.invoke (angular.js:4701) at $controllerInit (angular.js:10234) at nodeLinkFn (angular.js:9147) at angular.js:9553
我的依赖关系在bower.json中:
"dependencies": { "angular": "1.5.7","angular-animate": "1.5.7","angular-aria": "1.5.7","angular-cookies": "1.5.7","angular-material": "1.1.0-rc.5","angular-messages": "1.5.7","angular-resource": "1.5.7","angular-sanitize": "1.5.7","angular-ui-router": "1.0.0-beta.1","jquery": "2.2.4","mobile-detect": "1.3.2","moment": "2.13.0" }
任何想法有什么问题,我错过了什么?
最后解决了,我误解了组件的工作原理.
首先我将SampleData更改为sampleData,Pascal Case,但第一个字母小.
然后在模块内,我将模板更改为模板:’< sample sample-data =“$resolve.sampleData”>< / sample>‘
并决心:
resolve: { sampleData: function (msApi) { return msApi.resolve('sample@get'); } }
而对于组件我也改变了绑定:
bindings: { sampleData: '=' },
并且在组件的控制器内部,我从签名中删除了SampleData,并将其称为$ctrl.helloText = $ctrl.sampleData.data.helloText ;.
所以最终的代码现在就像:
对于模块:
(function () { 'use strict'; angular .module('app.sample',views: { 'content@app': { template: '<sample sample-data="$resolve.sampleData"></sample>' } },resolve: { sampleData: function (myService) { return myService.getSample(); // I return a promise here } } }); } })();
和组件如下:
(function () { 'use strict'; angular .module('app.sample') .component('sample',bindings: { sampleData: '=' },controller: Sample }); /** @ngInject */ function Sample() { var $ctrl = this; $ctrl.helloText = $ctrl.sampleData.data.helloText; } })();
最后工作.