rheaton · September 8, 2014 14:41
diff --git a/application.html.erb b/application.html.erb
 ...
 <body class='class-for-all-pages <%= body_classes%>'>
 ...
diff --git a/application_helper.rb b/application_helper.rb
 module ApplicationHelper
  def add_body_class(*classes)
    @_body_classes ||= []
    @_body_classes << classes
    nil
  end

  def body_classes
    @_body_classes.try(:join, " ")
  end
 end
diff --git a/template.html.erb b/template.html.erb
 <%- add_body_class 'myspecialpage' -%>
	module ApplicationHelper
	def add_body_class(*classes)
	@_body_classes \|\|= []
	@_body_classes << classes
	nil
	end

	def body_classes
	@_body_classes.try(:join, " ")
	end
	end