Question

我有Ember.ArrayController，其中包含DS.Store#find查询的结果。

当应用程序收到Pusher发出的添加了新项目的通知时，我想将其添加到列表中：

App.Item = DS.Model.extend({
    name: DS.attr("string")
});

App.latestItemsController = Ember.ArrayController.create({

    init: function() {
        // load a page of data from the server
        this.set("content", App.store.find(App.Item, {page: 1}));

        // subscribe to events from our app-wide message pump 
        // which dispatches events from Pusher
        App.get("eventQueue").on("item-added", _(this.itemAdded).bind(this));
    },

    // called whenever we're notified of a new item being added by someone else
    itemAdded: function(data) {

        // don't want to do this as it'll save next time we do a App.store.commit();
        App.store.createRecord(App.Item, data);

        // can't do this because it's a DS.Model and tells you to use createRecord:
        // plus as it's a filtered result even if the App.Item.create succeeded 
        // then we'd get an error because this.content is immutable [1]
        this.pushObject(App.Item.create(data));

        // ... not sure what else to try!
    }
});

这在性质上与以下问题类似：

[1] Adding item to filtered result from ember-data

[2] create temporarty non persistent object in Ember-Data

Answer 1

（1）使用#load加载记录而不将它们标记为新记录。

（2）DS.AdapterPopulatedModelArray不允许您修改它。我要做的是手动创建自己的DS.ModelArray，并将内容和isLoaded属性绑定到DS.Store返回的属性。

将项添加到ModelArray而不使其保存在DS.Store＃commit上

1 个答案: