activesupport/lib/active_support/core_ext/string/inflections.rb


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require File.dirname(__FILE__) + '/../../inflector'
module ActiveSupport #:nodoc:
  module CoreExtensions #:nodoc:
    module String #:nodoc:
      # Makes it possible to do "posts".singularize that returns "post" and "MegaCoolClass".underscore that returns "mega_cool_class".
      module Inflections
        def pluralize
          Inflector.pluralize(self)
        end

        def singularize
          Inflector.singularize(self)
        end

        def camelize
          Inflector.camelize(self)
        end

        def underscore
          Inflector.underscore(self)
        end

        def demodulize
          Inflector.demodulize(self)
        end

        def tableize
          Inflector.tableize(self)
        end

        def classify
          Inflector.classify(self)
        end
        
        # Capitalizes the first word and turns underscores into spaces and strips _id, so "employee_salary" becomes "Employee salary" 
        # and "author_id" becomes "Author".
        def humanize
          Inflector.humanize(self)
        end

        def foreign_key(separate_class_name_and_id_with_underscore = true)
          Inflector.foreign_key(self, separate_class_name_and_id_with_underscore)
        end

        def constantize
          Inflector.constantize(self)
        end
      end
    end
  end
end