Ember数据删除失败，如何回滚 [英] Ember Data delete fails, how to rollback

问题描述

如果我调用destroyRecord并且在服务器上失败，它也会从本地存储和UI消失。如果删除失败，我需要以某种方式回滚。我试过这样的东西。

If I call destroyRecord and it fails on the server, it also disappears from the local store and from the UI. I need to somehow "rollback" if delete fails. I have tried something like this.

        item.destroyRecord().then(function () {
            Notify.success("item removed");
        }).catch(function (response) {
            //NEED TO ROLLBACK HERE - ANY IDEAS?
            Notify.error('Failed to remove!');
        });

推荐答案

首先，回滚与关系不能完全奏效ember数据，其次更新版本的ember数据处理更好（ember数据1.0 beta 7+）。记录在这个目的上有一个回滚方法，它仍然是beta，但它主要是你要找的。

Firstly, rollback with relationships doesn't fully work in ember data, secondly the newer versions of ember data handle this better (ember data 1.0 beta 7+). Records have a rollback method on them for this very purpose, it's still in beta, but it does mostly what you're looking for.

    item.destroyRecord().then(function () {
        Notify.success("item removed");
    }).catch(function (response) {
        item.rollback();
        Notify.error('Failed to remove!');
    });

注意：在较新版本的Ember中， item.rollback（）不再使用功能，而是使用Marcelo的评论中提到的 item.rollbackAttributes（）。

NOTE: In newer versions of Ember, item.rollback() no longer functions, instead use item.rollbackAttributes() as mentioned in comments from Marcelo.

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