From inside a static method, you can also create a new document by doing : schema.statics.createUser = function(callback) { var user = new this(); user.phone_number = “jgkdlajgkldas”; user.save(callback); };
Posting my own answer so this doesn’t stay open: Version 4 models (stable released on 2015-03-25) now exposes a hydrate() method. None of the fields will be marked as dirty initially, meaning a call to save() will do nothing until a field is mutated. https://github.com/LearnBoost/mongoose/blob/41ea6010c4a84716aec7a5798c7c35ef21aa294f/lib/model.js#L1639-1657 It is very important to note that this is intended … Read more
The results returned from the aggregation pipeline are just plain objects. So you do the sorting as a pipeline stage, not as a separate operation: Recommend.aggregate( [ // Grouping pipeline { “$group”: { “_id”: ‘$roomId’, “recommendCount”: { “$sum”: 1 } }}, // Sorting pipeline { “$sort”: { “recommendCount”: -1 } }, // Optionally limit results … Read more
The second parameter of populate is a field selection string, so you can do this as: Author .findOne({personcode: code}) .select(‘-_id -__v’) .populate(‘bookids’, ‘-_id -__v’) .exec(function (err, data) { //foo }); Note that you should combine your field selections into a single string.
As suggested in accepted answer, you need to have your local server to be run as a replica set to be able to perform transactions, as opposed to standalone server. However, in addition to the proposed solution, you can easily convert your Standalone local db to a Replica Set without using any third-party tool, by … Read more
Because this query finds the doc in the shell: db.getCollection(‘stories’).find({_id:’572f16439c0d3ffe0bc084a4′}) That means that the type of _id in the document is actually a string, not an ObjectId like Mongoose is expecting. To find that doc using Mongoose, you’d have to define _id in the schema for Story as: _id: { type: String }
TL;DR All you have to do is remove the curly braces from the Types. That should work. Just like this: import Types from ‘mongoose’ But the name does not matter. Explanation import Types from ‘mongoose’ works because we are importing the package’s default export (this is why the name we use does not matter). However, … Read more
null is a valid _id value in MongoDB, so if you don’t want it used in new docs you must ensure that a null value is replaced with a new ObjectID in query: var query = {_id: plcy._id}; if (!query._id) { query._id = new mongoose.mongo.ObjectID(); } // the rest stays the same…
Option 2 is probably the cleanest. Assuming you have a Mongoose Connection object named conn that’s been opened using mongoose.createConnection, you can access the native mongo Db object via conn.db. From there you can call collectionNames which should provide what you’re looking for: conn.db.collectionNames(function (err, names) { // names contains an array of objects that … Read more