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# rails metal to be used with carrierwave (gridfs) and MongoMapper | |
# Now works with MongoMapper 0.7.5 and Mongo 1.0 | |
# Begin/rescue is a bit lame, but mongo 1.0 doesn't have the exist? method yet (only from 1.0.1) | |
require 'mongo' | |
# Allow the metal piece to run in isolation | |
require(File.dirname(__FILE__) + "/../../config/environment") unless defined?(Rails) | |
class Gridfs | |
def self.call(env) | |
if env["PATH_INFO"] =~ /^\/images\/gridfs\/(.+)$/ | |
key = $1 | |
grid = Mongo::GridFileSystem.new(MongoMapper.database) | |
begin | |
grid.open(key, 'r') do |file| | |
[200, {'Content-Type' => file.content_type, "Expires" => Time.now.advance(:days => 1).httpdate, 'Cache-Control' => 'max-age=31536000' }, [file.read]] | |
end | |
rescue | |
[404, {'Content-Type' => 'text/plain'}, ['File not found.']] | |
end | |
else | |
[404, {'Content-Type' => 'text/plain'}, ['File not found.']] | |
end | |
end | |
end |
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nice one, thanks for updating the old gist