Question

I have a simple sinatra app that uses haml and sass for the views. One of the views (located in the views folder) is a partial for my navigation menu. I am trying to render it from index.haml but I get the following error: wrong number of arguments (1 for 2)

I am trying to render it with the following lines in index.haml

.navigation
  = render :partial => "nav"

Answer 1

EDIT: !!! OUTDATED !!! Read Jason’s answer below!

What are you trying works in rails! Sinatra has no partial method. An implementation of partial on Sinatra looks like this (source gist) from github:

module Haml
  module Helpers
    def partial(template, *args)
      template_array = template.to_s.split('/')
      template = template_array[0..-2].join('/') + "/_#{template_array[-1]}"
      options = args.last.is_a?(Hash) ? args.pop : {}
      options.merge!(:layout => false)
      if collection = options.delete(:collection) then
        collection.inject([]) do |buffer, member|
          buffer << haml(:"#{template}", options.merge(:layout =>
          false, :locals => {template_array[-1].to_sym => member}))
        end.join("\n")
      else
        haml(:"#{template}", options)
      end
    end
  end
end

Including this method, you may call partial in your .haml files, like
= partial("partial_name")

If you want to render a view in an other view syntax is
= render(:haml,:'rel_path_to_view',:locals => {:optional => option})

Notice the syntax differences between rails and sinatra regarding render method!