an initializer for Rails 3, to fix compatability with postgres 9.0.1 and fixture loading when using foreign keys

postgres-hack.rb

# HACK
# rails 3.0.3 doesn't turn off foreign keys on postgres 9.0.1
# consider removing this after rails 3.0.4
# https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/5635-postgresql_adapter-doesnt-disable-referential-integrity-for-pg-90#ticket-5635-5

require 'active_record/connection_adapters/postgresql_adapter'

module ActiveRecord
  module ConnectionAdapters
    class PostgreSQLAdapter < AbstractAdapter
      
      # REFERENTIAL INTEGRITY ====================================
      # ### BREAKS FOR 9.0.1
      # def supports_disable_referential_integrity?() #:nodoc:
      #   version = query("SHOW server_version")[0][0].split('.')
      #   version[0].to_i >= 8 && version[1].to_i >= 1
      # rescue
      #   return false
      # end
      
      def supports_disable_referential_integrity?
        postgresql_version >= 80100
      end
    end
  end
end