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Contents
# Base class for helper objects inspired by http://railscasts.com/episodes/101-refactoring-out-helper-object
#
# Use of such classes is indicated when you have:
#
# * helper methods calling each other, especially if ...
# * helper methods are passing around variables (which will become instance variables)
# * the same case/if logic in many methods, indicating a requirement for class hierarchy
#
# Your helper class's methods can just do calculations which are subsituted into
# html in the views, or the methods can generate html as well. This is helpful
# when the html is conditional on some other object's state.
#
# You have access to all the helper methods available to the view that creates
# the instance.
#
# Implementing helper classes should inherit from Renderer::Base and the template
# instance should be passed as an argument to the constructor.
#
# # app/helpers/renderer/my_renderer.rb
# class MyRenderer < Renderer::Base
# ...
# end
#
# # app/views/a_controller/a_view.html.erb
# <% renderer = MyRenderer.new(self) %> # must pass in template
# ...
# <div>
# <%= renderer.div_content %>
# </div>
class UcbRails::Renderer::Base
# Holds reference to view template
attr_accessor :template
# Options to pass to renderer
attr_accessor :options
# Returns new instance of renderer. The _template_ argument is the view template.
def initialize(template, options = {})
self.template = template
self.options = options
end
private
# Method missing sends all calls to template instance. This techniuqe
# provides access to helper methods available to the template.
def method_missing(*args, &block)
template.send(*args, &block)
end
end
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13 entries across 13 versions & 1 rubygems