require 'action_controller/record_identifier' module ActionView # = Action View Record Tag Helpers module Helpers module RecordTagHelper include ActionController::RecordIdentifier # Produces a wrapper DIV element with id and class parameters that # relate to the specified Active Record object. Usage example: # # <%= div_for(@person, :class => "foo") do %> # <%= @person.name %> # <% end %> # # produces: # #
Joe Bloggs
# # You can also pass an array of Active Record objects, which will then # get iterated over and yield each record as an argument for the block. # For example: # # <%= div_for(@people, :class => "foo") do |person| %> # <%= person.name %> # <% end %> # # produces: # #
Joe Bloggs
#
Jane Bloggs
# def div_for(record, *args, &block) content_tag_for(:div, record, *args, &block) end # content_tag_for creates an HTML element with id and class parameters # that relate to the specified Active Record object. For example: # # <%= content_tag_for(:tr, @person) do %> # <%= @person.first_name %> # <%= @person.last_name %> # <% end %> # # would produce the following HTML (assuming @person is an instance of # a Person object, with an id value of 123): # # .... # # If you require the HTML id attribute to have a prefix, you can specify it: # # <%= content_tag_for(:tr, @person, :foo) do %> ... # # produces: # # ... # # You can also pass an array of objects which this method will loop through # and yield the current object to the supplied block, reducing the need for # having to iterate through the object (using each) beforehand. # For example (assuming @people is an array of Person objects): # # <%= content_tag_for(:tr, @people) do |person| %> # <%= person.first_name %> # <%= person.last_name %> # <% end %> # # produces: # # ... # ... # # content_tag_for also accepts a hash of options, which will be converted to # additional HTML attributes. If you specify a :class value, it will be combined # with the default class name for your object. For example: # # <%= content_tag_for(:li, @person, :class => "bar") %>... # # produces: # #
  • ... # def content_tag_for(tag_name, single_or_multiple_records, prefix = nil, options = nil, &block) if single_or_multiple_records.respond_to?(:to_ary) single_or_multiple_records.to_ary.map do |single_record| capture { content_tag_for_single_record(tag_name, single_record, prefix, options, &block) } end.join("\n").html_safe else content_tag_for_single_record(tag_name, single_or_multiple_records, prefix, options, &block) end end private # Called by content_tag_for internally to render a content tag # for each record. def content_tag_for_single_record(tag_name, record, prefix, options, &block) options, prefix = prefix, nil if prefix.is_a?(Hash) options = options ? options.dup : {} options.merge!(:class => "#{dom_class(record, prefix)} #{options[:class]}".strip, :id => dom_id(record, prefix)) if block.arity == 0 content_tag(tag_name, capture(&block), options) else content_tag(tag_name, capture(record, &block), options) end end end end end