rust/_var.html.erb

## _var.html.erb
<% if var -%>
  ok
<% else -%>
  ng
<% end -%>
end

## index.html.erb
<%= render :partial => "var", :locals => {:var => @var} -%>
of

## result.txt
ok end of

## top_controller.rb
class TopController < ApplicationController
  def index
    @var = nil
  end
end
	<%= render :partial => "var", :locals => {:var => @var} -%>
	of
	class TopController < ApplicationController
	def index
	@var = nil
	end
	end