I have the following query db in mongodb that returns exactly what I need: db.collection.find({field1: 2801394}, {name: 1, field2: 1, _id: 1, "field3.2801394": 1}) Note field 3 is a hash, and t...

When I use mongo-ruby-driver and I insert new document it returns generated '_id': db = MongoClient.new('127.0.0.1', '27017').db('ruby-mongo-examples') id = db['test'].insert({name: 'example'}) #...

I recently upgraded from mongoid 2.0.2 to mongoid 3 with rails 3.2.12 and ruby 1.9.3 . Following issue comes when save command excutes => @new_node.save Moped::Errors::OperationFailure (The ...

This issue was said to be resolved the latest version of Moped but still happens to me. I have a rails 4.2 app with Mongoid, created a user for a MongoDB DB with readWrite and dbOwner roles, and se...

I'm using Mongoid (v3) to access MongoDB, and want to perform this action: db.sessionlogs.update( {sessionid: '12345'}, /* selection criteria */ {'$push':{rows: "new set of data"}}, /* modifica...

I am seeing a ton of jobs failing when running Sidekiq that are all related to connectivity issues with my Mongo database. I'm stress testing the machine with lots of load, so I queued over 18,000 ...

I have a Rails 3 app with MongoID 3 deployed successfully to Heroku (using MongoHQ) -- but then something happened (cannot pinpoint what exactly it was) and the build started crashing on Heroku. S...