更新猫鼬中的许多嵌套对象

Question

is there a way to update many nested objects in mongoose all at once ? i can update one nested object like this :

    Model.findOneAndUpdate(
    {name : watchlistName , "mentions.id" : 123},
    {
        $set : {
            "mentions.$.tone" : positive,
            "mentions.$.verified" : true
        }
    }, function (err) {
        if(err) {
            console.log(err);
        }
    }
    );

but if i have let's say 200 id to update, how should i proceed ?

Answer 1

You can use Model's update method for this.

Model.update(
    {name : watchlistName , "mentions.id": { $in: [1, 2, 3, 4, 5] }},
    {
        $set : {
            "mentions.$.tone" : positive,
            "mentions.$.verified" : true
        }
    }, function (err) {
        if(err) {
            console.log(err);
        }
    }
);

If you need to update them with different values I'd suggest to do it this way:

const docs = await Model.find({name : watchlistName , "mentions.id": { $in: [1, 2, 3, 4, 5] }}).exec();

docs.forEach((doc) => {
  doc.mentions.$.tone = '[docValue]';
});

await Promise.all(docs.map(async doc => await doc.save()));
// All docs are updated now