EmberJS 发送多个操作的组件

2018-01-03 19:13 更新

描述

组件生成多个不同的操作以指定不同的事件。您需要将事件的名称指定为sendAction()方法的第一个参数。

语句

{{user-form submit="action1" cancel="action2"}}

例子

<!DOCTYPE html>
<html>
   <head>
      <title>Emberjs Sending Multiple Actions</title>
      <!-- CDN's -->
      <script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/3.0.1/handlebars.min.js"></script>
      <script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.10.0/ember.min.js"></script>
      <script src="https://builds.emberjs.com/tags/v1.10.0-beta.3/ember-template-compiler.js"></script>
      <script src="https://builds.emberjs.com/release/ember.debug.js"></script>
      <script src="https://builds.emberjs.com/beta/ember-data.js"></script>
   </head>
   <body>
      <script type="text/x-handlebars" data-template-name="index">
         <h1>Create New User</h1>
            {{user-form submit="createUser" cancel="cancelUserCreation" }}
      </script>

      <script type="text/x-handlebars" data-template-name="components/user-form">
         <form {{action "submit" on="submit"}}>
            <p>Name {{input type="text" value=fname}}</p>
            <button {{action "cancel"}}>Cancel</button>
            <input type="submit" value="Submit User Name">
         </form>
      </script>

      <script type="text/javascript">
         App = Ember.Application.create();

         App.IndexController = Ember.ObjectController.extend({
            actions: {
               //calling the multiple actions
               //action for creating user
               createUser: function(user) {
                  document.write("Created user: " + user.fname);
               },

               //action for cancle
               cancelUserCreation: function() {
                  document.write("Canceled user creation");
               }
            }
         });

         App.UserFormComponent = Ember.Component.extend({
            actions: {
               submit: function() {
                  //simply addind an additional parameters to the sendAction() method as submit
                  this.sendAction('submit', {
                     fname: this.get('fname'),
                  });
               },

               cancel: function() {
                  //simply addind an additional parameters to the sendAction() method as cancel
                  this.sendAction('cancel');
               }
            }
        });
      </script>
   </body>
</html>

输出

让我们执行以下步骤，看看上面的代码如何工作：

将上面的代码保存在comp_mult_actn.html文件中
在浏览器中打开此HTML文件。

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