provision setup

config/initializers/mysql2_adapter.rb

@@ -0,0 +1,45 @@
+module ActiveRecord
+  class Base
+    # Overriding ActiveRecord::Base.mysql2_connection
+    # method to allow passing options from database.yml
+    #
+    # Example of database.yml
+    #
+    #   login: &login
+    #     socket: /tmp/mysql.sock
+    #     adapter: mysql2
+    #     host: localhost
+    #     encoding: utf8
+    #     flags: 131072
+    #
+    # @param [Hash] config hash that you define in your
+    #   database.yml
+    # @return [Mysql2Adapter] new MySQL adapter object
+    #
+    def self.mysql2_connection(config)
+      config[:username] = 'root' if config[:username].nil?
+
+      if Mysql2::Client.const_defined? :FOUND_ROWS
+        config[:flags] = config[:flags] ? config[:flags] | Mysql2::Client::FOUND_ROWS : Mysql2::Client::FOUND_ROWS
+      end
+
+      client = Mysql2::Client.new(config.symbolize_keys)
+      options = [config[:host], config[:username], config[:password], config[:database], config[:port], config[:socket], 0]
+      ConnectionAdapters::Mysql2Adapter.new(client, logger, options, config)
+    end
+  end
+
+  # This method is for running stored procedures.
+  #
+  # @return [Hash]
+  #
+  def self.select_sp(sql, name = nil)
+    connection = ActiveRecord::Base.connection
+    begin
+      connection.select_all(sql, name)
+    rescue NoMethodError
+    ensure
+      connection.reconnect! unless connection.active?
+    end
+  end
+end