lib/remotipart/middleware.rb
module Remotipart
# A middleware to look for our form parameters and
# encourage Rails to respond with the requested format
class Middleware
def initialize app
@app = app
end
def call env
# Get request params
begin
params = Rack::Request.new(env).params
rescue TypeError => e
::Rails.logger.warn e.message
::Rails.logger.warn e.backtrace.join("\n")
end
if params
# This was using an iframe transport, and is therefore an XHR
# This is required if we're going to override the http_accept
if params['X-Requested-With'] == 'IFrame'
env['HTTP_X_REQUESTED_WITH'] = 'xmlhttprequest'
end
# Override the accepted format, because it isn't what we really want
if params['X-HTTP-Accept']
env['HTTP_ACCEPT'] = params['X-HTTP-Accept']
end
end
@app.call(env)
end
end
end