middleman navbar from yaml

_navbar.haml

-# If data_source isn't specified in locals, then default to "navigation"
-#
-# Example for custom data_source:
-#
-#   = partial :navbar, locals: { data_source: "navigation" }
-#
- data_source ||= "navigation"

-# Additional classes are also supported on the navbar
-#
-# Example:
-#
-#   = partial :navbar, locals: { nav_class: "navbar_inverse" }
-#
- nav_class ||= "navbar-default"

-# Unless specified, the link for any brand used is /
-#
- brand_link ||= "/"


-# Navigation is automatically rendered from ../../data/{DATA_SOURCE}.yml
-# There is support for one-level depth.
-# Top level items should start with a "-"; second-level should be indented.
-#
-# Exmaple:
-#
-# - Foo: "foo_link"
-# - Bar: "optional_fallback_link_for_nojavascript"
-#   Baz: "baz_link"
-#   Baz2: "baz2_link"
-#
-# Foo is a normal link.
-# Bar is a dropdown title (with an optional link — it can be empty), as it has children
-# Baz and Baz2 are children links to Bar.

- if data.has_key? data_source

  %nav.navbar(role="navigation" class="#{nav_class}")
    .navbar-header
      %button.navbar-toggle(data-toggle="collapse" data-target=".navbar-ex1-collapse")
        %span.sr-only
          Toggle navigation

        - 3.times do 
          %span.icon-bar

      - if defined? brand

        %a.navbar-brand(href=brand_link)
          = brand

    .collapse.navbar-collapse.navbar-ex1-collapse
      - data[data_source].each do |item|

        %ul.nav.navbar-nav

          - if item.is_a?(String)

            %p.navbar-text= item

          - elsif item.count == 1
            
            - item.each do |text, link|

              - if link
                %li= link_to text, link

              - else
                %p.navbar-text= text

          - else

            %li.dropdown
              %a.dropdown-toggle(data-toggle="dropdown" href="#{item.first[1] || '#'}")
                = item.first[0]
                %span.caret

              %ul.dropdown-menu
                - item.each do |text, link|
                  - unless text == item.first[0]
                    %li= link_to text, link

navigation.yml

- home: "/"
- Menu1: "optional_nojs_fallback_link"
  boo: "#bleh"
  boo2: "#bleh"
- Menu w/o link:
  boo: "#bleh"
- Blog: blog
- text string
- text string w/o a link: