AttrInquirable wraps value of attribute in ActiveSupport::StringInquirer.

attr_inquireable.rb

# AttrInquirable
#  wraps value of attribute in ActiveSupport::StringInquirer.
#
# Usage:
#
#   class Person < ActiveRecord::Base
#     attr_inquireable :status
#   end
#
#   person = Person.new(:status => :pending)
#   person.status.pending?  # true
#   person.status == "pending" # true
#
module AttrInquirable
  module ClassMethods
    def attr_inquireable(*columns)
      columns.to_a.each do |column|
        has_accessor_method = self.instance_methods.include?(column.to_s)

        method_name = has_accessor_method ? "#{column.to_s}_with_inquiry" : column.to_s

        define_method(method_name){

          (has_accessor_method ? send("#{column}_without_inquiry") : read_attribute(column)).try{|v|
            ActiveSupport::StringInquirer.new(v.to_s).tap{|inc|
              inc.class_eval do
                def ==(that)
                  case that
                    when Symbol then self.to_sym == that
                    else super that
                  end
                end
              end
            }
          }
        }
        alias_method_chain column, :inquiry if has_accessor_method
      end
    end
  end

  def self.included(base)
    base.extend ClassMethods
  end
end

ActiveRecord::Base.extend AttrInquirable::ClassMethods