Module: ActiveRecord::Connections

Defined in:
lib/active_record/connections.rb,
lib/active_record/connections/connection_proxy.rb

Defined Under Namespace

Classes: ConnectionProxy

Instance Method Summary collapse

Instance Method Details

#proxy_connection ⇒ Object 



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# File 'lib/active_record/connections.rb', line 52

def proxy_connection
  Thread.current["ActiveRecord::Connections.proxy_connection"]
end

#proxy_connection=(proxy_connection) ⇒ Object 



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# File 'lib/active_record/connections.rb', line 56

def proxy_connection=(proxy_connection)
  Thread.current["ActiveRecord::Connections.proxy_connection"] = proxy_connection
end

#using_connection(connection_name, connection_spec) ⇒ Object

Using on ApplicationController:

class ApplicationController < ActionController::Base
  before_filter :handle_customer

  protected

  def handle_customer(&block)
    customer = Customer.find_by_domain!(request.domain)
    ActiveRecord::Base.using_connection(customer.id, customer.connection_spec, &block)
  end
end

Using directly on models:

customer = Customer.first

ActiveRecord::Base.using_connection(customer.id, customer.connection_spec) do
  User.count # => 3
end



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# File 'lib/active_record/connections.rb', line 28

def using_connection(connection_name, connection_spec)
  self.proxy_connection = ConnectionProxy.new(connection_name, connection_spec)

  def self.connection_pool
    connection_handler.retrieve_connection_pool(proxy_connection)
  end

  def self.retrieve_connection
    connection_handler.retrieve_connection(proxy_connection)
  end

  yield
ensure
  self.proxy_connection = nil

  def self.connection_pool
    connection_handler.retrieve_connection_pool(self)
  end

  def self.retrieve_connection
    connection_handler.retrieve_connection(self)
  end
end