javascript - Mongoose : update nested document array

Question

我的收藏如下:

   "_id" : ObjectId("5751f7892ae95d601f40411d"),

   "doc" : [
    {
        "org" : ObjectId("5751f7892ae95d601f40411c"),
        "action" : 0,
        "_id" : ObjectId("5751f7892ae95d601f40411e")
    },
    {
        "org" : ObjectId("5751952cace204c507fad255"),
        "action" : 1,
        "_id" : ObjectId("575217ce341cf6512b8dff39")
    }     ]

我想用 org:5751952cace204c507fad255 更新文档中的操作字段所以 Action 将等于 2我知道这已经回答了很多次，但它对我不起作用

这是我尝试过但 Collection 没有改变的方法:

     Model.update(
    {
        "_id":ObjectId("5751f7892ae95d601f40411d"),
        "doc.org":ObjectId("5751952cace204c507fad255")
    },
    {
        "$inc": {
                "doc.$.action": 1
        }
    }
)

Answer 1

可以尝试使用位置运算符 $ 来增加匹配的 Action doc.$.action

喜欢:

//assume you passed modelId and orgId in request body
// According to your tag you may used mongoose so use mongoose.Types.ObjectId('5751f7892ae95d601f40411d') instead of ObjectId("5751f7892ae95d601f40411d")
// or direct req.body.modelId without convert
Model.update(
    {
        "_id": req.body.modelId,
        "doc.org": req.body.orgId
    },
    {
        "$inc": {
                "doc.$.action": 1
        }
    },
    function(error, updatedData) {
        if(error) {
            return res.status(400).send(error);
        }
        return res.status(200).send(updatedData);
    }
);