rails/rails — Issue #5027: render stream: true fails => undef `to_str' for Rack::Chunked::Body
Author: krainboltgreene
Created: 2012-02-13 18:18:00+00:00
State: open

Here's the setup:

``` ruby
class PagesController < ApplicationController
before_filter -> { @footer = true }

caches_action :splash

def splash
render stream: true
end
```

```
-----> Installing dependencies using Bundler version 1.1.rc.7
Running: bundle install --without development:test --path vendor/bundle --binstubs bin/ --deployment
Using rake (0.9.2.2)
Using i18n (0.6.0)
Using multi_json (1.0.4)
Using activesupport (3.2.1)
Using builder (3.0.0)
Using activemodel (3.2.1)
Using erubis (2.7.0)
Using journey (1.0.1)
Using rack (1.4.1)
Using rack-cache (1.1)
Using rack-test (0.6.1)
Using hike (1.2.1)
Using tilt (1.3.3)
Using sprockets (2.1.2)
Using actionpack (3.2.1)
Using mime-types (1.17.2)
Using polyglot (0.3.3)
Using treetop (1.4.10)
Using mail (2.4.1)
Using actionmailer (3.2.1)
Using arel (3.0.0)
Using tzinfo (0.3.31)
Using activerecord (3.2.1)
Using activeresource (3.2.1)
Using addressable (2.2.6)
Using bcrypt-ruby (3.0.1)
Using bson (1.5.2)
Using bson_ext (1.5.2)
Using coffee-script-source (1.2.0)
Using execjs (1.3.0)
Using coffee-script (2.2.0)
Using rack-ssl (1.3.2)
Using json (1.6.5)
Using rdoc (3.12)
Using thor (0.14.6)
Using railties (3.2.1)
Using coffee-rails (3.2.2)
Using daemons (1.1.8)
Using dalli (1.1.4)
Using draper (0.10.0)
Using eventmachine (0.12.10)
Using multipart-post (1.1.4)
Using faraday (0.7.6)
Using jquery-rails (2.0.0)
Using mongo (1.5.2)
Using mongoid (2.4.3)
Using newrelic_rpm (3.3.1)
Using oauth (0.4.5)
Using oauth2 (0.5.2)
Using bundler (1.1.rc.7)
Using rails (3.2.1)
Using sass (3.1.15)
Using sass-rails (3.2.4)
Using temple (0.3.5)
Using slim (1.1.0)
Using slim-rails (1.0.3)
Using sorcery (0.7.6)
Using thin (1.3.1)
Using uglifier (1.2.3)
```

```
2012-02-13T18:11:14+00:00 app[web.1]: Started GET "/" for 208.117.193.99 at 2012-02-13 18:11:14 +0000
2012-02-13T18:11:14+00:00 app[web.1]:
2012-02-13T18:11:14+00:00 app[web.1]: NoMethodError (undefined method `to_str' for #):
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/caching/fragments.rb:62:in `block in write_fragment'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/caching/fragments.rb:123:in `block in instrument_fragment_cache'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/notifications.rb:123:in `block in instrument'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/notifications.rb:123:in `instrument'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/caching/fragments.rb:123:in `instrument_fragment_cache'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/caching/fragments.rb:61:in `write_fragment'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/caching/actions.rb:109:in `_save_fragment'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/caching/actions.rb:147:in `filter'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:321:in `around'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:310:in `_callback_around_56'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:214:in `_conditional_callback_around_66'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:436:in `_run__3580495302427494058__process_action__2983193010779220199__callbacks'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:405:in `__run_callback'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:81:in `run_callbacks'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/abstract_controller/callbacks.rb:17:in `process_action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/rescue.rb:29:in `process_action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/notifications.rb:123:in `block in instrument'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/notifications.rb:123:in `instrument'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/instrumentation.rb:29:in `process_action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/params_wrapper.rb:205:in `process_action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/newrelic_rpm-3.3.1/lib/new_relic/agent/instrumentation/rails3/action_controller.rb:34:in `block in process_action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/newrelic_rpm-3.3.1/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:255:in `block in perform_action_with_newrelic_trace'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/newrelic_rpm-3.3.1/lib/new_relic/agent/method_tracer.rb:242:in `trace_execution_scoped'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/newrelic_rpm-3.3.1/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:250:in `perform_action_with_newrelic_trace'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/newrelic_rpm-3.3.1/lib/new_relic/agent/instrumentation/rails3/action_controller.rb:33:in `process_action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/abstract_controller/base.rb:121:in `process'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/abstract_controller/rendering.rb:45:in `process'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal.rb:203:in `dispatch'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_controller/metal.rb:246:in `block in action'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:66:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:66:in `dispatch'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:30:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/journey-1.0.1/lib/journey/router.rb:68:in `block in call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/journey-1.0.1/lib/journey/router.rb:56:in `each'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/journey-1.0.1/lib/journey/router.rb:56:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/routing/route_set.rb:589:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/newrelic_rpm-3.3.1/lib/new_relic/rack/browser_monitoring.rb:23:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/mongoid-2.4.3/lib/rack/mongoid/middleware/identity_map.rb:33:in `block in call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/mongoid-2.4.3/lib/mongoid.rb:132:in `unit_of_work'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/mongoid-2.4.3/lib/rack/mongoid/middleware/identity_map.rb:33:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/etag.rb:23:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/conditionalget.rb:25:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/head.rb:14:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/params_parser.rb:21:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/flash.rb:242:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/session/abstract/id.rb:205:in `context'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/session/abstract/id.rb:200:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/cookies.rb:338:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:405:in `_run__2817706704028173152__call__4532870903455771305__callbacks'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:405:in `__run_callback'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/callbacks.rb:81:in `run_callbacks'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/sendfile.rb:102:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/rack/logger.rb:26:in `call_app'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/rack/logger.rb:16:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/request_id.rb:22:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/methodoverride.rb:21:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/runtime.rb:17:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.1/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/lock.rb:15:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/static.rb:53:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.1/lib/rack/cache/context.rb:132:in `forward'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.1/lib/rack/cache/context.rb:241:in `fetch'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.1/lib/rack/cache/context.rb:181:in `lookup'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.1/lib/rack/cache/context.rb:65:in `call!'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/rack-cache-1.1/lib/rack/cache/context.rb:50:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/engine.rb:479:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/application.rb:220:in `call'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/railtie/configurable.rb:30:in `method_missing'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/connection.rb:80:in `block in pre_process'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/connection.rb:78:in `catch'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/connection.rb:78:in `pre_process'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/connection.rb:53:in `process'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/connection.rb:38:in `receive_data'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/backends/base.rb:61:in `start'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/server.rb:159:in `start'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/controllers/controller.rb:86:in `start'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/runner.rb:185:in `run_command'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/lib/thin/runner.rb:151:in `run!'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/gems/thin-1.3.1/bin/thin:6:in `'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/bin/thin:19:in `load'
2012-02-13T18:11:14+00:00 app[web.1]: vendor/bundle/ruby/1.9.1/bin/thin:19:in `

'
2012-02-13T18:11:14+00:00 app[web.1]:
2012-02-13T18:11:14+00:00 app[web.1]:
2012-02-13T18:11:14+00:00 app[web.1]: cache: [GET /] miss
```