Methods of creating data attributes in haml.

data_attributes.rb

require "rubygems"
require "haml"

class Symbol
  def -(string)
    "#{self}-#{string}".intern
  end
end

def method_missing name, *args, &block
  name.to_s
end

puts Haml::Engine.new(DATA.read).render

__END__
%h1 Methods for creating a data-edit attribute in haml

%h3 Official
%p{:data=>{:edit=>'whatever'}} content

%h3 Cleaner and flexible
%p{:'data-edit'=>'whatever'} content

%h3 Clean but inflexible
%p(data-edit='whatever') content

%h3 Possibly a mistake
%p{:data-edit=>'whatever'} content