Mustache filter

mustache_filter.rb

# Wanting to use the _filter_ feature of _Liquid_ in _Mustache_?, no problem:
# To MarkDown filter in Mustache

require 'rubygems'
require 'mustache'
require 'rdiscount'

class MyView < Mustache
  def to_md( text )
    RDiscount.new( text ).to_html
  end
end

my_view = MyView.new

puts(
  Mustache.render(
    "{{#my_view}}{{#to_md}}MarkDown *rules*!.{{/to_md}}{{/my_view}}",
    { :my_view  => my_view }
  )
)

# => <p>MarkDown <em>rules</em>!.</p>

mustache_filter_with_render.rb

# Maybe you need to feed the filter with dinamic content,
# maybe an attribute of a Mustache object:

require 'rubygems'
require 'mustache'
require 'rdiscount'

class MyView < Mustache
  def initialize( text )
    @text = text
  end
  
  def text
    @text
  end
  
  def to_md( text )
    RDiscount.new( render( text ) ).to_html # especial attention to the 'render' call.
  end
end

my_view = MyView.new( "MarkDown *rules*!." )

puts(
  Mustache.render(
    "{{#my_view}}{{#to_md}}{{text}}{{/to_md}}{{/my_view}}",
    { :my_view  => my_view }
  )
)

# => <p>MarkDown <em>rules</em>!.</p>