joeyAghion · April 8, 2018 02:14
diff --git a/db_splitting_example.rb b/db_splitting_example.rb
 class ImportBase
  include Mongoid::Document
  include Mongoid::Timestamps

  field :import_version, type: String, default: 'v1'  # legacy imports use 'v1' connection

  before_create do
    self.import_version = 'v2'  # new imports use 'v2' connection
  end

  protected

  def choose_connection
    if import_version == 'v2'
      Mongoid.session('imports')  # alternate database configuration
    else
      self.class.mongo_session
    end
  end

 end

 class FooImport < ImportBase
  
  def insert_data
    # use choose_connection to insert data...
  end

  def get_data
    # use choose_connection to retrieve data...
  end

 end
	class ImportBase
	include Mongoid::Document
	include Mongoid::Timestamps

	field :import_version, type: String, default: 'v1' # legacy imports use 'v1' connection

	before_create do
	self.import_version = 'v2' # new imports use 'v2' connection
	end

	protected

	def choose_connection
	if import_version == 'v2'
	Mongoid.session('imports') # alternate database configuration
	else
	self.class.mongo_session
	end
	end

	end

	class FooImport < ImportBase

	def insert_data
	# use choose_connection to insert data...
	end

	def get_data
	# use choose_connection to retrieve data...
	end

	end