Auto register jpg methods in middleman in middleman

image_helper.rb

# place me inside the helpers folder on the root of the middleman project
# ex.:
# (given that you have an image name slider.jpg inside the images folder)
#
#      slider_image()
# =>   "<img src=\"slider.jpg\" />"
#
#      slider_image( class: 'foo', 'data-attribute': 'bar')
# =>   "<img class=\"foo\" data-attribute=\"bar\" src=\"slider.jpg\" />"

module ImageHelper
  Dir.glob('source/images/*.jpg').each do |file_name|
    define_method( ( File.basename( file_name,".*") + "_image" ).to_sym ) do |hsh={}|
      hsh[:src] = file_name.gsub(/source/, '')
      tag :img, hsh
    end
  end
end