module ActiveSupport #:nodoc: module CoreExtensions #:nodoc: module Array #:nodoc: module Conversions # Converts the array to comma-seperated sentence where the last element is joined by the connector word. Options: # * :connector: The word used to join the last element in arrays with two or more elements (default: "and") # * :skip_last_comma: Set to true to return "a, b and c" instead of "a, b, and c". def to_sentence(options = {}) options.assert_valid_keys(:connector, :skip_last_comma) options.reverse_merge! :connector => 'and', :skip_last_comma => false case length when 0 "" when 1 self[0] when 2 "#{self[0]} #{options[:connector]} #{self[1]}" else "#{self[0...-1].join(', ')}#{options[:skip_last_comma] ? '' : ','} #{options[:connector]} #{self[-1]}" end end # When an array is given to url_for, it is converted to a slash separated string. def to_param join '/' end def self.included(klass) #:nodoc: klass.send(:alias_method, :to_default_s, :to_s) klass.send(:alias_method, :to_s, :to_formatted_s) end def to_formatted_s(format = :default) case format when :db if respond_to?(:empty?) && self.empty? "null" else collect { |element| element.id }.join(",") end else to_default_s end end def to_xml(options = {}) raise "Not all elements respond to to_xml" unless all? { |e| e.respond_to? :to_xml } options[:root] ||= all? { |e| e.is_a?(first.class) && first.class.to_s != "Hash" } ? first.class.to_s.underscore.pluralize : "records" options[:children] ||= options[:root].singularize options[:indent] ||= 2 options[:builder] ||= Builder::XmlMarkup.new(:indent => options[:indent]) root = options.delete(:root).to_s children = options.delete(:children) if !options.has_key?(:dasherize) || options[:dasherize] root = root.dasherize end options[:builder].instruct! unless options.delete(:skip_instruct) opts = options.merge({ :root => children }) options[:builder].tag!(root) { each { |e| e.to_xml(opts.merge!({ :skip_instruct => true })) } } end end end end end