OK, I think you need to break this out into the basic “varieties”. You have two “entity”-style objects: User Campaign You have one “mapping”-style object: UserCampaign You have one “transactional”-style object: Click Step 1: entity Let’s start with the easy ones: User & Campaign. These are truly two separate objects, neither one really depends on … Read more
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
While Pentaho and Jaspersoft and other legacy reporting solutions have ways to pump data out of MongoDB, there are two newer solutions designed explicitly for analytics and reporting on MongoDB data: JSON Studio. This is a commercial solution that lets you visually build aggregation pipelines and connect them to charts. SlamData. This is an open … Read more
Since 3.2, we can use $arrayElemAt to get the first element in an array db.my_collection.aggregate([ { $project: { resp : { $arrayElemAt: [‘$my_field’,0] } }} ])
The “production deployments” page on MongoDB’s site may be of interest to you. Lots of presentations listed with infrastructure information. For example: http://blog.wordnik.com/12-months-with-mongodb says they’re storing 3 TB per node.
The answer in this related post is correct. You should: not mix options with connection string (if done so) make sure your IP you are running on is whitelisted and your network allows connections to Atlas make sure the user has sufficient permissions use the connection string as is provided by atlas and just provide … Read more
The error comes from the bcrypt.hash method. In your case, you have the following piece of code : bcrypt.hash(newUser.password, salt , (err, hash) => { … } I think that your problem comes from the newUser.password that must be empty (null or undefined). The error says data and salt arguments required. It looks like your … 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