ember.js - 在视图中保存模型数据后为空

Question

在视图中保存模型后，视图中的数据为空。例如，如果我在帖子中添加评论并且在保存帖子后我的视图为空，则不会显示任何数据。为什么？我如何解决问题？

 var post = this.get('model');
 var comment = this.store.pushObject('comment');
 comment.set('text', ' thats some text');
 comment.set('created', '11111212');
 comment.save().then(function(resolvedComment){
   post.get('comments').addObject(resolvedComment);
   post.save();
});

Answer 1

按照转换指南，您应该将代码更改为：

var post = this.get('model');
var comment = this.store.createRecord('comment');
comment.set('text', ' thats some text');
comment.set('created', '11111212');
comment.save().then(function(resolvedComment){
  post.get('comments').pushObject(resolvedComment);
  post.save();
});

更多信息可以在这里找到。

希望能帮助到你。

Answer 2

好的，你得到我的控制器，如果你点击保存按钮，这个方法就会触发。

App.PostController = Ember.ObjectController.extend({
    needs: ['application'],
    newComment: null,

    actions:{

        createIncidentComment: function(){
            var post = this.get('model');
            var state = post.get('postState');
            var newComment = this.get('newComment');
            var date = Date.now();
            var currentUser = this.get('controllers.application.user');
            var contr = this;
            if(newComment!= null){
                var comment = this.store.createRecord('comment',{
                    comment: newComment,
                    created: date,
                    context: postState,
                    reporter: currentUser
                });
                comment.save().then(function(){
                    post.get('comments').pushObject(comment);
                    post.save();
                });
            }
        }
    }
});

Answer 3

问题解决了 ：）

保存帖子后，我实际上重新加载了模型。在我的示例中，模型是帖子。

App.PostController = Ember.ObjectController.extend({
    needs: ['application'],
    newComment: null,

    actions:{

        createIncidentComment: function(){
            var post = this.get('model');
            var state = post.get('postState');
            var newComment = this.get('newComment');
            var date = Date.now();
            var currentUser = this.get('controllers.application.user');
            var contr = this;
            if(newComment!= null){
                var comment = this.store.createRecord('comment',{
                    comment: newComment,
                    created: date,
                    context: postState,
                    reporter: currentUser
                });
                comment.save().then(function(){
                    post.get('comments').pushObject(comment);
                    post.save().then(function(){
                       post.reload();
                    });
                });
            }
        }
    }
});