I have an array of _ids and I want to get all docs accordingly, what's the best way to do it ?
Something like ...
// doesn't work ... of course ...
model.find({
'_id' : [
'4ed3ede8844f0f351100000c',
'4ed3f117a844e0471100000d',
'4ed3f18132f50c491100000e'
]
}, function(err, docs){
console.log(docs);
});
The array might contain hundreds of _ids.
Use this format of querying
let arr = _categories.map(ele => new mongoose.Types.ObjectId(ele.id));
Item.find({ vendorId: mongoose.Types.ObjectId(_vendorId) , status:'Active'})
.where('category')
.in(arr)
.exec();
Ids is the array of object ids:
const ids = [
'4ed3ede8844f0f351100000c',
'4ed3f117a844e0471100000d',
'4ed3f18132f50c491100000e',
];
Using Mongoose with callback:
Model.find().where('_id').in(ids).exec((err, records) => {});
Using Mongoose with async function:
const records = await Model.find().where('_id').in(ids).exec();
Or more concise:
const records = await Model.find({ '_id': { $in: ids } });
Don't forget to change Model with your actual model.
Both node.js and MongoChef force me to convert to ObjectId. This is what I use to grab a list of users from the DB and fetch a few properties. Mind the type conversion on line 8.
// this will complement the list with userName and userPhotoUrl based on userId field in each item
augmentUserInfo = function(list, callback){
var userIds = [];
var users = []; // shortcut to find them faster afterwards
for (l in list) { // first build the search array
var o = list[l];
if (o.userId) {
userIds.push( new mongoose.Types.ObjectId( o.userId ) ); // for the Mongo query
users[o.userId] = o; // to find the user quickly afterwards
}
}
db.collection("users").find( {_id: {$in: userIds}} ).each(function(err, user) {
if (err) callback( err, list);
else {
if (user && user._id) {
users[user._id].userName = user.fName;
users[user._id].userPhotoUrl = user.userPhotoUrl;
} else { // end of list
callback( null, list );
}
}
});
}
Combining Daniel's and snnsnn's answers:
let ids = ['id1','id2','id3']
let data = await MyModel.find(
{'_id': { $in: ids}}
);
_x000D_
Simple and clean code. It works and tested against:
"mongodb": "^3.6.0", "mongoose": "^5.10.0",
This code works for me just fine as of mongoDB v4.2 and mongoose 5.9.9:
const Ids = ['id1','id2','id3']
const results = await Model.find({ _id: Ids})
and the Ids can be of type ObjectId
or String
Source: Stackoverflow.com