I need to use the two gems mongoid and mongo in my Rails app.

Any ideas to workaround this troublesome problem thanks~

gem 'mongo', '2.0.2',:git => 'git://github.com/mongodb/mongo-ruby-driver.git'
gem 'mongoid', '4.0.0'

1. gem "mongo_mapper"

Error message

Bundler could not find compatible versions for gem "bson":
In Gemfile:
mongo (= 2.0.2) ruby depends on
bson (~> 3.0) ruby

mongoid (= 4.0.0) ruby depends on
moped (~> 2.0.0) ruby depends on
bson (~> 2.2) ruby

UPDATE ##

Mongoid is handy , but sometime it is sucks,

because I got error 'Client Error: Remaining data too small for BSON object,

and even I wrapped it in begin rescue block , it still break my Rails app, and stop the import data task, what the suck Mongoid is ! So I decided to give up use Mongoid to insert new records to collection , I tried to use mongo. But they are conflict in my Rails app, WTH again !

def bulk_insert_to_collection(collection_name)
model = collection_name.capitalize.constantize.new
begin
model.collection.insert(@data_in_chunk)

1. @bulk.execute
   rescue Exception=>err
   log_error "[# {err}] File #{@file_path}: line of #{i} #{Time.now}"
   rescue Exception => err
   log_error "[#{err}

   ] File #

   {@file_path}: line of #{i} #{Time.now}"
   rescue => err
   p ex
   log_error "{err} File #{@file_path}

   : line of #

   {i}

   #

   {Time.now}

   "
   end

2. @data_in_chunk = []
   end