ruby on rails - Displaying Png image using Barby Barcode generator -


i using barby , png outputter. have gotten compile fine, not sure how can display image. here code..

controller: 

@barcode = barby::code128b.new(@num) @blob = barby::pngoutputter.new(@barcode).to_png #raw png data file.open('barcode.png', 'w'){|f| f.write @blob }

application helper:

require 'barby' require 'barby/barcode/code_128' require 'barby/outputter/png_outputter'

view:

<%= @blob %>

since @blob image data, can't "print" regular string. need use image_tag instead, , give path image. like:

<%= image_tag("barcode.png") %>

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