猫鼬findByIdAndUpdate没有返回正确的模型 [英] Mongoose findByIdAndUpdate not returning correct model
问题描述
我遇到了一个以前从未见过的问题,即Mongoose findByIdAndUpdate在回调中未返回正确的模型.
I have an issue I've not seen before with the Mongoose findByIdAndUpdate not returning the correct model in the callback.
代码如下:
var id = args._id;
var updateObj = {updatedDate: Date.now()};
_.extend(updateObj, args);
Model.findByIdAndUpdate(id, updateObj, function(err, model) {
if (err) {
logger.error(modelString +':edit' + modelString +' - ' + err.message);
self.emit('item:failure', 'Failed to edit ' + modelString);
return;
}
self.emit('item:success', model);
});
数据库中的原始文档如下:
The original document in the db looks like this:
{
_id: 1234
descriptors: Array[2],
name: 'Test Name 1'
}
要加入的updateObj如下:
The updateObj going in looks like this:
{
_id: 1234
descriptors: Array[2],
name: 'Test Name 2'
}
从回调返回的模型与原始模型相同,而不是updatedObj. 如果我查询数据库,它已正确更新.只是没有从数据库中返回它.
The model returned from the callback is identical to the original model, not the updatedObj. If I query the db, it has been updated correctly. It's just not being returned from the database.
这感觉像是一个愚蠢的用户"错误,但我看不到它.任何想法,不胜感激.
This feels like a 'stupid-user' error, but I can't see it. Any ideas greatly appreciated.
推荐答案
在Mongoose 4.0中,findByIdAndUpdate
(和findOneAndUpdate
)的new
选项的默认值已更改为false
(请参阅#2262) 发行说明).这意味着在应用更新后,您需要将选项显式设置为true
以获得新版本的文档:
In Mongoose 4.0, the default value for the new
option of findByIdAndUpdate
(and findOneAndUpdate
) has changed to false
(see #2262 of the release notes). This means that you need to explicitly set the option to true
to get the new version of the doc, after the update is applied:
Model.findByIdAndUpdate(id, updateObj, {new: true}, function(err, model) {...
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