javascript - 组件 : ui-router resolve will not inject into controller, 数据未定义

Question

我在使用组件和 ui-router 的 resolve 时遇到了这个问题，“在”resolving promise 之后的数据在 Controller 中是“未定义的”

服务:

class userService {
  constructor ($http, ConfigService, authService) {
    this.$http = $http;
    this.API_URL = `${ConfigService.apiBase}`;
    this.authService = authService;
  }


testAuth () {
    return this.$http.get(this.API_URL + '/test-auth')
 }

getCollaboratores () {
    return this.$http.get(this.API_URL + '/collaboratores').then( 
          (resolve) => {   // promise resolve
          console.log('Success',resolve.data);
     }
   )
 }

getAccount () {
   var config = {
   headers: { "X-Shark-CollaboratoreId" : "1"}
  };
  return this.$http.get(this.API_URL + '/accounts' + '/' + 1,     config).then( 
          (resolve) => {   // promise resolve
              console.log('Success',resolve.data);
      }
   )
 }

模块/组件/路由:

.config(($stateProvider, $urlRouterProvider) => {
 "ngInject";

 $urlRouterProvider.otherwise('/');

 $stateProvider
   .state('core', {
      redirectTo: 'dashboard',
      url: '/core',
      component: 'core',
      resolve: {
        userdata: (userService) => {
            return userService.getCollaboratores();
        },
        accdata: (userService) => {
            return userService.getAccount();
        }
      }

    });
})

Controller :

let self;

class CoreController {
  constructor($state,userService,authService,userdata,accdata) {
    this.name = 'core';
    this.$state = $state;
    this.userService = userService;
    this.authService = authService;
    this.userdata = userdata;
    this.accdata = accdata;
    console.log('name',this.name);
    self = this;
    console.log('userdata',self);
  }
}

CoreController.$inject = ['$state','userService',     'authService','userdata','accdata'];

export default CoreController;

在 Controller 中注入(inject)“http”调用后由 promise“解析”的对象

 this.userdata = userdata;
 this.accdata = accdata;

未定义!!!

bug在哪里？？

非常感谢...

Answer 1

将 getCollaboratores 函数更改为以下:

getCollaboratores () {
  return this.$http.get(this.API_URL + '/collaboratores').then( 
      (resolve) => {   // promise resolve
      console.log('Success',resolve.data);
      return resolve;
   });
}

对另一个 getAccount 做同样的事情(即在成功回调返回解析中)。

这将解决您的问题。

原因是一旦你链接成功回调，第一个回调返回可以作为第二个回调参数的东西。由于服务中的成功回调未返回任何内容(js 中函数的默认返回值未定义)，因此解析值在 Controller 中不可用。