All Questions
32,273
questions
509
votes
23
answers
714k
views
How do I update/upsert a document in Mongoose?
Perhaps it's the time, perhaps it's me drowning in sparse documentation and not being able to wrap my head around the concept of updating in Mongoose :)
Here's the deal:
I have a contact schema and ...
- 27.5k
436
votes
9
answers
253k
views
What is the "__v" field in Mongoose
I'm using Mongoose version 3 with MongoDB version 2.2. I've noticed a __v field has started appearing in my MongoDB documents. Is it something to do with versioning? How is it used?
- 8,862
431
votes
17
answers
464k
views
Mongoose: findOneAndUpdate doesn't return updated document
Below is my code
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');
var Cat = mongoose.model('Cat', {
name: String,
age: {type: Number, default: 20},
...
- 8,438
367
votes
24
answers
595k
views
E11000 duplicate key error index in mongodb mongoose
Following is my user schema in user.js model -
var userSchema = new mongoose.Schema({
local: {
name: { type: String },
email : { type: String, require: true, unique: true },
...
- 5,926
361
votes
9
answers
333k
views
mongodb/mongoose findMany - find all documents with IDs listed in array
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' : [
'...
- 9,053
331
votes
8
answers
141k
views
Stop Mongoose from creating _id property for sub-document array items
If you have subdocument arrays, Mongoose automatically creates ids for each one. Example:
{
_id: "mainId"
subDocArray: [
{
_id: "unwantedId",
field: "value"
},
...
- 3,413
331
votes
12
answers
493k
views
Push items into mongo array via mongoose
Basically I have a mongodb collection called 'people'
whose schema is as follows:
people: {
name: String,
friends: [{firstName: String, lastName: String}]
}
Now, I have a ...
- 3,717
327
votes
36
answers
386k
views
How to paginate with Mongoose in Node.js?
I am writing a webapp with Node.js and mongoose. How can I paginate the results I get from a .find() call? I would like a functionality comparable to "LIMIT 50,100" in SQL.
- 10.5k
310
votes
10
answers
196k
views
Comparing mongoose _id and strings
I have a node.js application that pulls some data and sticks it into an object, like this:
var results = new Object();
User.findOne(query, function(err, u) {
results.userId = u._id;
}
When I do ...
- 3,563
286
votes
9
answers
217k
views
How do you turn a Mongoose document into a plain object?
I have a document from a mongoose find that I want to extend before JSON encoding and sending out as a response. If I try adding properties to the doc it is ignored. The properties don't appear in ...
- 42.7k
281
votes
22
answers
346k
views
Avoid "current URL string parser is deprecated" warning by setting useNewUrlParser to true
I have a database wrapper class that establishes a connection to some MongoDB instance:
async connect(connectionString: string): Promise<void> {
this.client = await MongoClient.connect(...
- 17.3k
261
votes
11
answers
182k
views
Difference between MongoDB and Mongoose
I wanted to use the mongodb database, but I noticed that there are two different databases with either their own website and installation methods: mongodb and mongoose. So I came up asking myself this ...
- 2,820
257
votes
12
answers
358k
views
Node.js Mongoose.js string to ObjectId function
Is there a function to turn a string into an objectId in node using mongoose? The schema specifies that something is an ObjectId, but when it is saved from a string, mongo tells me it is still just a ...
- 3,144
255
votes
22
answers
277k
views
add created_at and updated_at fields to mongoose schemas
Is there a way to add created_at and updated_at fields to a mongoose schema, without having to pass them in everytime new MyModel() is called?
The created_at field would be a date and only added when ...
- 74.2k
243
votes
21
answers
479k
views
How to sort in mongoose?
I find no documentation for the sort modifier. The only insight is in the unit tests:
spec.lib.query.js#L12
writer.limit(5).sort(['test', 1]).group('name')
But it doesn't work for me:
Post.find()....
- 9,048
219
votes
11
answers
256k
views
In Mongoose, how do I sort by date? (node.js)
let's say I run this query in Mongoose:
Room.find({}, (err,docs) => {
}).sort({date:-1});
This doesn't work!
- 266k
217
votes
7
answers
225k
views
How can I generate an ObjectId with mongoose?
I'd like to generate a MongoDB ObjectId with Mongoose. Is there a way to access the ObjectId constructor from Mongoose?
This question is about generating a new ObjectId from scratch. The generated ID ...
- 37.3k
211
votes
51
answers
237k
views
Cannot overwrite model once compiled Mongoose
Not Sure what I'm doing wrong, here is my check.js
var db = mongoose.createConnection('localhost', 'event-db');
db.on('error', console.error.bind(console, 'connection error:'));
var a1= db.once('...
- 3,391
205
votes
8
answers
366k
views
Mongoose, Select a specific field with find
I'm trying to select only a specific field with
exports.someValue = function(req, res, next) {
//query with mongoose
var query = dbSchemas.SomeValue.find({}).select('name');
query.exec(...
- 3,415
204
votes
11
answers
327k
views
MongoDB/Mongoose querying at a specific date?
Is it possible to query for a specific date ?
I found in the mongo Cookbook that we can do it for a range Querying for a Date Range
Like that :
db.posts.find({"created_on": {"$gte": start, "$lt": ...
- 5,891
199
votes
16
answers
184k
views
Populate nested array in mongoose
How can I populate "components" in the example document:
{
"__v": 1,
"_id": "5252875356f64d6d28000001",
"pages": [
{
"__v": 1,
"_id": "5252875a56f64d6d28000002",
...
- 3,631
195
votes
10
answers
198k
views
Properly close mongoose's connection once you're done
I'm using mongoose in a script that is not meant to run continuously, and I'm facing what seems to be a very simple issue yet I can't find an answer; simply put once I make a call to any mongoose ...
- 12k
193
votes
8
answers
168k
views
Mongoose - What does the exec function do?
I came across a piece of Mongoose code that included a query findOne and then an exec() function.
Ive never seen that method in Javascript before? What does it do exactly?
- 2,053
186
votes
35
answers
186k
views
Failed to load c++ bson extension
A total node noob here. I've been trying to set up a sample node app but the following error keeps popping up every time I try to run:
node app
Failed to load c++ bson extension, using pure JS ...
- 2,448
186
votes
8
answers
176k
views
Mongoose and multiple database in single node.js project
I'm doing a Node.js project that contains sub projects. One sub project will have one Mongodb database and Mongoose will be use for wrapping and querying db. But the problem is
Mongoose doesn't ...
- 1,901
176
votes
6
answers
430k
views
How to define object in array in Mongoose schema correctly with 2d geo index
I'm currently having problems in creating a schema for the document below. The response from the server always returns the "trk" field values as [Object]. Somehow I have no idea how this should work, ...
- 1,959
176
votes
18
answers
169k
views
mongoError: Topology was destroyed
I have a REST service built in node.js with Restify and Mongoose and a mongoDB with a collection with about 30.000 regular sized documents.
I have my node service running through pmx and pm2.
...
- 2,436
173
votes
11
answers
198k
views
How to access a preexisting collection with Mongoose?
I have a large collection of 300 question objects in a database test. I can interact with this collection easily through MongoDB's interactive shell; however, when I try to get the collection through ...
- 16.1k
173
votes
8
answers
66k
views
Why does mongoose always add an s to the end of my collection name
For example, this code results in a collection called "datas" being created
var Dataset = mongoose.model('data', dataSchema);
And this code results in a collection called "users" being created
var ...
- 2,149
166
votes
4
answers
238k
views
Mongoose's find method with $or condition does not work properly
Recently I start using MongoDB with Mongoose on Nodejs.
When I use Model.find method with $or condition and _id field, Mongoose does not work properly.
This does not work:
User.find({
$or: [
...
- 4,947
164
votes
30
answers
205k
views
Server Discovery And Monitoring engine is deprecated
I am using Mongoose with my Node.js app and this is my configuration:
mongoose.connect(process.env.MONGO_URI, {
useNewUrlParser: true,
useUnifiedTopology: true,
useCreateIndex: true,
...
- 3,103
162
votes
10
answers
140k
views
Delete a key from a MongoDB document using Mongoose
I'm using the Mongoose Library for accessing MongoDB with node.js
Is there a way to remove a key from a document? i.e. not just set the value to null, but remove it?
User.findOne({}, function(err, ...
- 20.1k
162
votes
15
answers
250k
views
Mongoose, update values in array of objects
Is there a way to update values in an object?
{
_id: 1,
name: 'John Smith',
items: [{
id: 1,
name: 'item 1',
value: 'one'
},{
id: 2,
name: 'item 2',
value: 'two'
...
- 24.1k
162
votes
4
answers
62k
views
mongoDB/mongoose: unique if not null
I was wondering if there is way to force a unique collection entry but only if entry is not null.
e
Sample schema:
var UsersSchema = new Schema({
name : {type: String, trim: true, index: true, ...
- 9,053
160
votes
9
answers
99k
views
Mongoose -- Force collection name
I am trying to use mongoose to create a database and a collection in it. My code is:
var mongoose = require('mongoose');
var db = mongoose.connect('mongodb://localhost/testdb');
var Schema = mongoose....
- 1,609
158
votes
6
answers
129k
views
Mongoose subdocuments vs nested schema
I'm curious as to the pros and cons of using subdocuments vs a deeper layer in my main schema:
var subDoc = new Schema({
name: String
});
var mainDoc = new Schema({
names: [subDoc]
});
or
var ...
- 39.1k
154
votes
8
answers
107k
views
How do you use Mongoose without defining a schema?
In previous versions of Mongoose (for node.js) there was an option to use it without defining a schema
var collection = mongoose.noSchema(db, "User");
But in the current version the "noSchema" ...
- 11.3k
153
votes
9
answers
303k
views
How to get all count of mongoose model?
How can I know the count of a model that data has been saved? there is a method of Model.count(), but it doesn't seem to work.
var db = mongoose.connect('mongodb://localhost/myApp');
var ...
- 1,533
149
votes
2
answers
36k
views
Mongoose indexing in production code
Per the Mongoose documentation for MongooseJS and MongoDB/Node.js :
When your application starts up, Mongoose automatically calls ensureIndex for each defined index in your schema. While nice for ...
- 2,213
142
votes
3
answers
116k
views
Mongoose findByIdAndUpdate not returning correct model
I have an issue I've not seen before with the Mongoose findByIdAndUpdate not returning the correct model in the callback.
Here's the code:
var id = args._id;
var updateObj = {updatedDate: ...
- 2,893
135
votes
37
answers
117k
views
Mongoose Unique index not working!
I'm trying to let MongoDB detect a duplicate value based on its index. I think this is possible in MongoDB, but through the Mongoose wrapper things appear to be broken. So for something like this:
...
- 11.2k
133
votes
8
answers
151k
views
Mongoose (mongodb) batch insert?
Does Mongoose v3.6+ support batch inserts now? I've searched for a few minutes but anything matching this query is a couple of years old and the answer was an unequivocal no.
Edit:
For future ...
- 41.7k
131
votes
14
answers
141k
views
Return certain fields with .populate() from Mongoose
I'm getting returned a JSON value from MongoDB after I run my query. The problem is I do not want to return all the JSON associated with my return, I tried searching the docs and didn't find a proper ...
- 2,388
130
votes
17
answers
295k
views
ERR_HTTP_HEADERS_SENT: Cannot set headers after they are sent to the client
I'm facing this weird issue in NodeJS when using with Passport.js, Express and Mongoose. Basically, I get an error saying "Cannot set headers after they are sent to the client" even though I don't ...
- 1,411
129
votes
23
answers
123k
views
Mongoose the Typescript way...?
Trying to implement a Mongoose model in Typescript. Scouring the Google has revealed only a hybrid approach (combining JS and TS). How would one go about implementing the User class, on my rather ...
- 1,398
129
votes
3
answers
110k
views
Best way to perform a full text search in MongoDB and Mongoose
I'm searching on Google since days and I tried many things but I still can not perform a good full text search on my user collection.
I tried ElasticSearch but was pretty impossible to query and ...
- 3,416
129
votes
8
answers
130k
views
MongoDB, remove object from array
Doc:
{
_id: 5150a1199fac0e6910000002,
name: 'some name',
items: [{
id: 23,
name: 'item name 23'
},{
id: 24,
name: 'item name 24'
}]
}
Is there a way to pull a ...
- 24.1k
127
votes
9
answers
198k
views
Mongoose delete array element in document and save
I have an array in my model document. I would like to delete elements in that array based on a key I provide and then update MongoDB. Is this possible?
Here's my attempt:
var mongoose = require('...
- 5,393
126
votes
12
answers
295k
views
Mongoose: Get full list of users
I have tried to use Mongoose to send the list of all users as follows:
server.get('/usersList', function(req, res) {
var users = {};
User.find({}, function (err, user) {
users[user....
- 115k
125
votes
17
answers
145k
views
MongoDB password with "@" in it
I'm trying to connect to a MongoDB database with a username and password using Mongoose in Node.js. All the docs say that the connection string should look like
mongodb://username:password@host:...
- 5,011