Attempt w/initializer to monkey-patch active record in rails 3

001_monkey_patch_active_record.rb

require 'set'
require 'active_record/connection_adapters/mysql_adapter'

#
# Monkey-patch ActiveRecord (and the MySQL connection adapter specifically) to
# make the default true value: -1
#
# Also change the MySQL connection adapter so that migrations with a :timestamp
# column type will create a MySQL TIMESTAMP field instead of a DATETIME field.
#
# The purpose here is to have our database definitions match the behaviour and
# and requirements of a MySQL database that is backing a Microsoft Access 2003
# application, namely:
#   - Each table MUST have a TIMESTAMP (not DATETIME) column
#   - All booleans are stored in TINYINT(1) columns with TRUE being: -1
#
module ActiveRecord
  module ConnectionAdapters
    class Column

      #
      # Recognize -1 (and '-1') values on boolean columns as true. The existing
      # set of recognized values for "true" is defined in the TRUE_VALUES
      # constant which is only read/accessed via the #value_to_boolean method.
      #
      TRUE_VALUES_WITH_NEGATIVE_ONES = [-1, '-1'].to_set
      class << self
        def value_to_boolean_with_negative_ones(value)
          return true if TRUE_VALUES_WITH_NEGATIVE_ONES.include?(value)
          value_to_boolean_without_negative_ones(value)
        end
        alias_method_chain :value_to_boolean, :negative_ones
      end

    end
    class MysqlAdapter

      #
      # Set string '-1' as the default "true" value for boolean columns using
      # the MySQL Adapter. The original true value is defined in the QUOTED_TRUE
      # constant which is only read/accessed via the #quoted_true method.
      #
      QUOTED_TRUE_AS_NEGATIVE_ONE = '-1'.freeze
      def quoted_true_as_negative_one
        QUOTED_TRUE_AS_NEGATIVE_ONE
      end
      alias_method :quoted_true, :quoted_true_as_negative_one

      #
      # Make the MySQL Adapter create columns defined as a :timestamp column in
      # migrations as the MySQL "TIMESTAMP" data type instead of DATETIME. The
      # existing set of column type definitions is defined in the
      # NATIVE_DATABASE_TYPES constant (a hash) which is only read/accessed via
      # the #native_database_types method.
      #
      NATIVE_DATABASE_TYPES_WITH_TIMESTAMP = {
        :timestamp => { :name => "timestamp" }
      }
      def native_database_types_with_timestamp
        @native_database_types_with_timestamp ||=
          native_database_types_without_timestamp.merge(
            NATIVE_DATABASE_TYPES_WITH_TIMESTAMP
          )
      end
      alias_method_chain :native_database_types, :timestamp

    end
  end
end

I found that in Rails 3.1, I had to get AR to initialize properly. 'require' didnt work for me.

https://gist.github.com/1478997