mongoid3

It seems like Mongoid is now the superior ORM for Mongo based on performance and development activity. Unfortunately, we're on MongoMapper and need to migrate. Are there any concerns or stumbling blocks we should be aware of? We have found a few outdated articles on Google and tried posting on the Mongoid Google Groups (though we were prohibited), but would love thoughts from SO members who have done this in the past. We're on Rails 3.2.12. Thanks! Both of them are great MongoDB Libraries for Ruby. But if you want to switch, here are some notes: Migrating MongoMapper ORM to Mongoid ORM - Notes

I am talking to multiple databases using Mongoid.override_database("database_name") using Mongoid with rails. How do I find the current database programmatically? Mongoid docs on sessions: http://mongoid.org/en/moped/docs/driver.html define methods to override database but do not define a way to get the current database in use. Vamshidhar Behara Got it! Mongoid.default_session.options[:database] The new way to get this is Mongoid::Config.clients["default"]["database"] You can also just have a look at Mongoid::Config.clients to see what else is available. If you want the overrided database you

I've created a Rails Mountable App and added 'mongoid' and 'rspec' gem's. If I try to run my specs now I get the following error: Mongoid::Errors::NoSessionConfig: Problem: No configuration could be found for a session named 'default'. Summary: When attempting to create the new session, Mongoid could not find a session configuration for the name: 'default'. This is necessary in order to know the host, port, and options needed to connect. Resolution: Double check your mongoid.yml to make sure under the sessions key that a configuration exists for 'default'. If you have set the configuration

I am creating a test application using following versions of rails, ruby and mongoid. rails 4 beta ruby 2.0.0 mongoid 3.1.2 My GemFile looks like this gem 'rails', '4.0.0.beta1' ruby '2.0.0' gem 'mongoid', '~> 3.1.2' gem 'bson_ext' But when i run bundle on console I get following error. Bundler could not find compatible versions for gem "activemodel": Fetching gem metadata from https://rubygems.org/........... Fetching gem metadata from https://rubygems.org/.. Resolving dependencies... Bundler could not find compatible versions for gem "activemodel": In Gemfile: mongoid (~> 3.1.2) ruby depends

I'm writing a map/reduce operation with Mongoid 3.0. I'm trying to use the print statement to debug the JS functions. This is a troubleshooting suggestion from the MongoDB docs , e.g.: reduce = %Q{ function(user_id, timestamps) { var max = 0; timestamps.forEach(function(t) { var diff = t.started_at - t.attempted_at; if (diff > max) { max = diff; } }); print(user_id + ', ' + max); return max; }; } MyCollection.all.map_reduce(map, reduce).to_a Unfortunately the output from the print statement shows up neither on the console nor on the log--it seems that this is suppressed somewhere between the

I have two databases that I have to use in my application. I have the following in my mongoid.yml : development: # Configure available database sessions. (required) sessions: # Defines the default session. (required) default: # Defines the name of the default database that Mongoid can connect to. # (required). database: db_development username: myusername password: mypassword # Provides the hosts the default session can connect to. Must be an array # of host:port pairs. (required) hosts: - myserverip:27017 databases: secondary: database: db2_development username: myusername password: