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Versions: 24
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Contents
module Riveter
module Presenter
module Object
extend ActiveSupport::Concern
def to_presenter(klass)
raise ArgumentError, 'klass argument cannot be nil' if klass.nil?
raise ArgumentError, "#{klass} is not a valid presenter class" unless klass <= Presenter::Base
klass.new(self)
end
end
module Enumerator
extend ActiveSupport::Concern
def with_presenter(klass, &block)
raise ArgumentError, 'klass argument cannot be nil' if klass.nil?
raise ArgumentError, "#{klass} is not a valid presenter class" unless klass <= Presenter::Base
return to_enum(__method__, klass) unless block_given?
##
# some magic!
# assuming that this method is used within the view
# the block which is supplied will be in the scope of the view
# therefore, getting it's binding and evaluating self will
# get us the view object
##
view = block.binding.eval('self')
is_a_view = view.is_a?(ActionView::Base)
self.each do |item|
yield klass.new(item, (is_a_view ? view : nil))
end
end
end
class Base < SimpleDelegator
def item
__getobj__
end
def initialize(item, view=nil)
super(item)
@view = view
end
def method_missing(method, *args, &block)
return super if @view.nil?
if respond_to_without_view?(method)
super
elsif @view.respond_to?(method)
@view.send(method, *args, &block)
else
super
end
end
def respond_to_with_view?(method)
respond_to_without_view?(method) || (!@view.nil? && @view.respond_to?(method))
end
alias_method_chain :respond_to?, :view
end
end
end
class Object
include Riveter::Presenter::Object
end
class Enumerator
include Riveter::Presenter::Enumerator
end
Version data entries
24 entries across 24 versions & 1 rubygems