I'm trying to put text on an image via carrierwave and mini_magic. The code runs without erros, but the resulting image has no text on it.
version :text do
   process :put_text_stamp
end
def put_text_stamp
  manipulate! do |img|
    img.combine_options do |c|
      c.gravity 'Center'
      c.fill 'red'
      c.pointsize '22'
      c.draw "text 0,0 'TEXT'"
    end
    img = yield(img) if block_given?
    img
  end
end
 
                        
Hi just this morning I encountered the same problem, I'm still on rails 3.2 but this one worked fine for me. I guess its something with your yield function.