Question

我正在开发一个使用Babel和Angular 1.5.0的角度fullstack项目。

问题在于，当我构建一个数组（this.events = []）时，我无法在$ onInit（）上定位这个数组，我应该填充要在ui-calendar上显示的数据。我在this.awesomeTesting = [];

上这样做

所以我需要在$ onInit（）中使用来自$ http.get（'/ api / calendars /'）的数据填充this.events []数组，但是我不明白为什么我无法定位数组所以我可以填充数据。

我做错了什么？

这是我的代码：

'use strict';

(function() {

class MainController {

  constructor($http, $scope, socket, uiCalendarConfig) {
    this.$http = $http;
    this.socket = socket;
    this.awesomeThings = [];
    this.awesomeTesting = [];
    this.events = [];
    this.events.splice(0, this.events.length);
    this.eventSources = [this.events];
    console.log(this.eventSources);


    /* config object */
    $scope.uiConfig = {
      calendar:{
        height: 450,
        editable: true,
        header:{
          left: 'month',
          center: 'title',
          right: 'today prev,next'
        },
        dayClick: $scope.alertEventOnClick,
        eventDrop: $scope.alertOnDrop,
        eventResize: $scope.alertOnResize
      }
    };

    $scope.$on('$destroy', function() {
      socket.unsyncUpdates('thing');
    })
  }

  $onInit() {
    this.$http.get('/api/things').then(response => {
      this.awesomeThings = response.data;
      this.socket.syncUpdates('thing', this.awesomeThings);
    });

    this.$http.get('/api/calendars').then(response => {
      this.awesomeTesting = response.data;

      this.awesomeTesting.forEach(function (objectItem) {
        console.log('displays property in each object: ', objectItem.title);

        this.events.push({
          title: objectItem.title,
          start: objectItem.start
        });

      });
      this.socket.syncUpdates('calendar', this.awesomeTesting);
    });
  }

  addThing() {
    if (this.newThing) {
      this.$http.post('/api/things', { name: this.newThing });
      this.newThing = '';
    }
  }

  deleteThing(thing) {
    this.$http.delete('/api/things/' + thing._id);
  }
}

angular.module('myApp')
  .component('main', {
    templateUrl: 'app/main/main.html',
    controller: MainController
  });

})();

Answer 1

我通过使用for循环而不是.forEach（）修复了这个问题，但我仍然想知道如何使用.forEach（）完成答案？

for循环的解决方案：

for (var i = 0; i < this.awesomeTesting.length; i++) {

    this.events.push({
      title: this.awesomeTesting[i].title,
      start: this.awesomeTesting[i].start
    });
  }

Answer 2

尝试删除this.events.splice(0, this.events.length); 希望这有帮助。

Answer 3

试试这个：

var that = this; 而不是取代this.events - ＆gt; that.events

`$onInit() {

*var that = this;*
this.$http.get('/api/things').then(response => {
  this.awesomeThings = response.data;
  this.socket.syncUpdates('thing', this.awesomeThings);
});

this.$http.get('/api/calendars').then(response => {
  this.awesomeTesting = response.data;

  this.awesomeTesting.forEach(function (objectItem) {
    console.log('displays property in each object: ', objectItem.title);

    *that.events.*push({
      title: objectItem.title,
      start: objectItem.start
    });

  });
  this.socket.syncUpdates('calendar', this.awesomeTesting);
});

}`

如何使用angular-fullstack从$ onInit（）内定位构造数组

3 个答案: