Rails 3: Image Streaming Error: "Image ... cannot be displayed because it contains errors"

Question

The magazine says:

Started GET "/assets/2/thumb" for 110.174.88.80 at Fri Jul 01 20:11:35 -0700 2011 Processing by AssetsController#show as HTML Parameters: {"id"=>"2", "style"=>"thumb"} [/home/misha_moroshko/myfamily.moroshko.com/public/images/thumb.jpg] found! Sent file /home/misha_moroshko/myfamily.moroshko.com/public/images/thumb.jpg (0.2ms) Completed 200 OK in 2ms 

If you go directly to the image, it will be loaded correctly.

Please note that this is a simplified example of my real problem. In the real case, the image is not in the public folder, but the error is the same.

What can cause such an error?

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 rails -v => Rails 3.0.1 ruby -v => ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux] 

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Relevant Code:

 # config/routes.rb match "assets/:id/:style" => "assets#show" class AssetsController < ApplicationController def show path = Rails.root.join("public", "images", "thumb.jpg").to_s if File.exist?(path) logger.fatal "[#{path}] found!" send_file(path, { :type => "image/jpeg", :disposition => "inline" }) else logger.fatal "[#{path}] not found!" end end end 

Answer 1

Replacement

 config.action_dispatch.x_sendfile_header = "X-Sendfile" 

with

 config.action_dispatch.x_sendfile_header = "X-Accel-Redirect" 

in config/environments/production.rb solved the problem!

Answer 2

The URL http://www.myfamily.moroshko.com/assets/2/thumb sends the correct headers, but does not send the body in response. Did you remove the code that @amb suggested adding? It seems to go into your else block and just log the error on your console.