Question

I need to create image files on-the-fly in my controller with RMagick and send them to browser. Looks like it’s very simple, but I can’t find a way. I’ve tried just simply render them, but it fails due to data is binary. I’ve also tried to use send_data, but Padrino says it doesn’t know about such method.

So, what have I missed? How can I solve this problem?

Answer 1

according to sinatra api you don’t need this anymore.

get :image, with: id, provides: :png do
  img = Image.find(params[:id])
  img.binary_data_or_so
end

basically is the same of:

get '/send_binarydata' do
  content_type 'image/png'
  \x01\x02\x03
end