AngularJS：在同一指令的多个实例之间共享范围

I'm writing an app that uses the same table with the same data in multiple places. I created a custom directive that allows me to reuse this table. Unfortunately, if I edit the table in one instance, the other instance does not refresh. How do I link these two so that any edits I make to one show up in the other?

我正在编写一个应用程序,该应用程序在多个位置使用相同的数据表。我创建了一个自定义指令,允许我重用此表。不幸的是,如果我在一个实例中编辑表,则另一个实例不会刷新。如何链接这两个以便我对其中一个进行的编辑显示在另一个?

1 个解决方案

#1

It sounds like you've mostly figured it out, the hard part is getting your data into a shape where the videos and photos can be shared by the slide show. I recommend doing this in a shared data access object returned by a separate factory in Angular, rather than directly in a scope. I've got a sample in Plunkr if it helps.

听起来你已经大部分都弄明白了,困难的部分是将你的数据变成一个可以通过幻灯片分享视频和照片的形状。我建议在Angular中的单独工厂返回的共享数据访问对象中执行此操作,而不是直接在作用域中执行此操作。如果有帮助的话,我在Plunkr有一个样本。

The sample has a directives that binds to shared data, retrieved from a factory as an object injected into two separate scopes. In your case, you would have to add methods to retrieve data from the server, and shape it for display.

该示例具有绑定到共享数据的指令,从工厂检索为作为注入两个单独范围的对象。在您的情况下,您必须添加方法以从服务器检索数据,并对其进行整形以便显示。

testApp.factory("News", [function () {
  var news = {
    "stories": [
      {"date": new Date("2015-03-01"), "title": "Stuff happened"}, 
      {"date": new Date("2015-02-28"), "title": "Bad weather coming"},
      {"date": new Date("2015-02-27"), "title": "Dog bites man"}
    ],
    "addStory": function (title) {
      var story = {
        "date": new Date(),
        "title": title
      };
      news.stories.push(story);
    }
  };
  return news;
}]);

Both controllers reference the same factory for the data:

两个控制器都为数据引用相同的工厂:

testApp.controller("FirstController", 
  ["$scope", "News", function ($scope, news) {
    $scope.news = news;
}]);

testApp.controller("SecondController", 
  ["$scope", "News", function ($scope, news) {
    $scope.news = news;
}]);

Views then pass the data into to the news list directive, which both shares the data and keeps the directive relatively dumb.

然后,视图将数据传递到新闻列表指令,该指令共享数据并使指令保持相对愚蠢。

  <div ng-controller="FirstController">
    <news-list news="news" title="'First List'"></news-list>
  </div>
  <div ng-controller="SecondController">
    <news-list news="news" title="'Second List'"></news-list>
  </div>

The news-list directive is just dumb formatting in this example:

在这个例子中,news-list指令只是哑格式:

testApp.directive("newsList", 
  function() {
    var directive = {
      "restrict": "E",
      "replace": false,
      "templateUrl": "news-list.html",
      "scope": {
        "news": "=news",
        "title": "=title"
      } 
    };
    return directive;
});

View template:

<div class="news-list">
  <p>{{title}}</p>
  <ul>
    <li ng-repeat="story in news.stories | orderBy:'date':true">{{story.date | date:'short'}}: {{story.title}}</li>
  </ul>
  <form>
    <input type="text" id="newTitle" ng-model="newTitle" />
    <button ng-click="news.addStory(newTitle)">Add</button>
  </form>
</div>

#1

testApp.factory("News", [function () {
  var news = {
    "stories": [
      {"date": new Date("2015-03-01"), "title": "Stuff happened"}, 
      {"date": new Date("2015-02-28"), "title": "Bad weather coming"},
      {"date": new Date("2015-02-27"), "title": "Dog bites man"}
    ],
    "addStory": function (title) {
      var story = {
        "date": new Date(),
        "title": title
      };
      news.stories.push(story);
    }
  };
  return news;
}]);