node.js Mongoose findByIdAndUpdate 没有返回正确的模型
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Mongoose findByIdAndUpdate not returning correct model
提问by JonRed
I have an issue I've not seen before with the Mongoose findByIdAndUpdate not returning the correct model in the callback.
我有一个以前从未见过的问题，Mongoose findByIdAndUpdate 没有在回调中返回正确的模型。
Here's the code:
这是代码：
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);
});
The original document in the db looks like this:
db 中的原始文档如下所示：
{
_id: 1234
descriptors: Array[2],
name: 'Test Name 1'
}
The updateObj going in looks like this:
进入的 updateObj 如下所示：
{
_id: 1234
descriptors: Array[2],
name: 'Test Name 2'
}
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.
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，它已被正确更新。它只是没有从数据库中返回。
This feels like a 'stupid-user' error, but I can't see it. Any ideas greatly appreciated.
这感觉像是一个“愚蠢的用户”错误，但我看不到。任何想法都非常感谢。
回答by JohnnyHK
In Mongoose 4.0, the default value for the newoption 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 trueto get the new version of the doc, after the update is applied:
在 Mongoose 4.0 中，(and )new选项的默认值已更改为（请参阅发行说明的#2262 ）。这意味着您需要在应用更新后显式设置选项以获取文档的新版本：findByIdAndUpdatefindOneAndUpdatefalsetrue
Model.findByIdAndUpdate(id, updateObj, {new: true}, function(err, model) {...
