def self.require_mysql
unless defined? Mysql
begin
require_library_or_gem 'mysql'
rescue LoadError => cannot_require_mysql
begin
ActiveRecord::Base.logger.info(
"WARNING: You're using the Ruby-based MySQL library that ships with Rails. This library is not suited for production. " +
"Please install the C-based MySQL library instead (gem install mysql)."
) if ActiveRecord::Base.logger
require 'active_record/vendor/mysql'
rescue LoadError
raise cannot_require_mysql
end
end
end
MysqlCompat.define_all_hashes_method!
end