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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:
# * <tt>:connector</tt>: The word used to join the last element in arrays with more than two elements (default: "and")
# * <tt>:skip_last_comma</tt>: 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)
children = options.delete(:children)
options[:builder].instruct! unless options.delete(:skip_instruct)
options[:builder].tag!(root.to_s.dasherize) { each { |e| e.to_xml(options.merge({ :skip_instruct => true, :root => children })) } }
end
end
end
end
end
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