NoMethodError in Content_pages#show

Showing app/views/content_blocks/templates/volunteer/_photos.html.haml where line #18 raised:

undefined method `to' for nil:NilClass

Extracted source (around line #18):

15:               - best_attachment = category_asset_attachments.latest.first || asset_attachments.latest.first
16:             - else
17:               - best_attachment = asset_attachments.latest.first
18:             - if object = best_attachment.to
19:               %li
20:                 - title  = photo.caption_for(object) || object.title
21:                 - # ugly anchor treatment due to url_for bug

Trace of template inclusion: app/views/content_pages/templates/volunteer/main.html.haml

RAILS_ROOT: /data/polar/releases/20090616150122
Application Trace | Framework Trace | Full Trace

/data/polar/releases/20090616150122/app/views/content_blocks/templates/volunteer/_photos.html.haml:18:in `_run_haml_app47views47content_blocks47templates47volunteer47_photos46html46haml_locals_object_photos'
/data/polar/releases/20090616150122/app/views/content_blocks/templates/volunteer/_photos.html.haml:7:in `each'
/data/polar/releases/20090616150122/app/views/content_blocks/templates/volunteer/_photos.html.haml:7:in `_run_haml_app47views47content_blocks47templates47volunteer47_photos46html46haml_locals_object_photos'
/data/polar/releases/20090616150122/lib/template_handler_observer.rb:30:in `render'
/data/polar/releases/20090616150122/app/helpers/content_pages_helper.rb:30:in `execute_render'
/data/polar/releases/20090616150122/app/helpers/content_pages_helper.rb:20:in `render_block'
/data/polar/releases/20090616150122/app/helpers/content_pages_helper.rb:19:in `render_block'
/data/polar/releases/20090616150122/app/views/content_pages/templates/volunteer/main.html.haml:48:in `_run_haml_app47views47content_pages47templates47volunteer47main46html46haml'
/data/polar/releases/20090616150122/lib/template_handler_observer.rb:30:in `render'
/data/polar/releases/20090616150122/app/controllers/content_pages_controller.rb:30:in `show'

/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `send'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `render_without_template_handler_observer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:301:in `with_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:30:in `render_without_template_handler_observer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable_partial.rb:20:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:26:in `benchmark'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:10:in `realtime'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:26:in `benchmark'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable_partial.rb:19:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/template.rb:194:in `render_template_without_html_namespacing'
/usr/lib64/ruby/gems/1.8/gems/adamh-html_namespacing-0.0.3/lib/html_namespacing/plugin/rails.rb:31:in `render_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable_partial.rb:44:in `render_partial'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/partials.rb:184:in `render_partial'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:262:in `render_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:12:in `render'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers.rb:57:in `non_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:12:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:39:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:39:in `capture_without_haml'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:129:in `with_output_buffer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:39:in `capture_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:92:in `capture'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/rails/init.rb:18:in `cache_it'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/lib/cache_advance/named_cache.rb:27:in `call'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/lib/cache_advance/named_cache.rb:27:in `value_for'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/lib/cache_advance/cache_set.rb:20:in `apply'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/rails/init.rb:17:in `cache_it'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `send'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `render_without_template_handler_observer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:301:in `with_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:30:in `render_without_template_handler_observer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/template.rb:194:in `render_template_without_html_namespacing'
/usr/lib64/ruby/gems/1.8/gems/adamh-html_namespacing-0.0.3/lib/html_namespacing/plugin/rails.rb:31:in `render_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:260:in `render_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:14:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:343:in `_render_with_layout'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:257:in `render_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:14:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:1241:in `render_for_file'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:937:in `render_without_benchmark'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:51:in `render'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:10:in `realtime'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:51:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:1322:in `send'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:1322:in `perform_action_without_filters'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/filters.rb:617:in `call_filters'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/filters.rb:610:in `perform_action_without_benchmark'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:10:in `realtime'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/rescue.rb:160:in `perform_action_without_flash'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/flash.rb:141:in `perform_action'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:523:in `send'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:523:in `process_without_filters'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/filters.rb:606:in `sass_old_process'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/sass/plugin/rails.rb:19:in `process'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:391:in `process'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:386:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/routing/route_set.rb:433:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:88:in `dispatch'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:111:in `_call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:82:in `initialize'
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:29:in `call'
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:29:in `call'
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache'
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:9:in `cache'
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/query_cache.rb:28:in `call'
/usr/lib64/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/head.rb:9:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/methodoverride.rb:24:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/params_parser.rb:15:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/rewindable_input.rb:25:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/session/cookie_store.rb:93:in `call'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/cache/strategy/local_cache.rb:24:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/failsafe.rb:11:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/lock.rb:11:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/lock.rb:11:in `synchronize'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/vendor/rack-1.0/rack/lock.rb:11:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:106:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/cgi_process.rb:44:in `dispatch_cgi'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:102:in `dispatch_cgi'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/dispatcher.rb:28:in `dispatch'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/rack/adapter/rails.rb:54:in `serve_rails'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/rack/adapter/rails.rb:74:in `call'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/connection.rb:63:in `pre_process'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/connection.rb:54:in `process'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/connection.rb:39:in `receive_data'
/usr/lib64/ruby/gems/1.8/gems/eventmachine-0.12.2/lib/eventmachine.rb:231:in `run_machine'
/usr/lib64/ruby/gems/1.8/gems/eventmachine-0.12.2/lib/eventmachine.rb:231:in `run'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/backends/base.rb:57:in `start'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/server.rb:150:in `start'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/controllers/controller.rb:80:in `start'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/runner.rb:173:in `send'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/runner.rb:173:in `run_command'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/lib/thin/runner.rb:139:in `run!'
/usr/lib64/ruby/gems/1.8/gems/thin-1.0.0/bin/thin:6

/data/polar/releases/20090616150122/app/views/content_blocks/templates/volunteer/_photos.html.haml:18:in `_run_haml_app47views47content_blocks47templates47volunteer47_photos46html46haml_locals_object_photos'
/data/polar/releases/20090616150122/app/views/content_blocks/templates/volunteer/_photos.html.haml:7:in `each'
/data/polar/releases/20090616150122/app/views/content_blocks/templates/volunteer/_photos.html.haml:7:in `_run_haml_app47views47content_blocks47templates47volunteer47_photos46html46haml_locals_object_photos'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `send'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `render_without_template_handler_observer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:301:in `with_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:30:in `render_without_template_handler_observer'
/data/polar/releases/20090616150122/lib/template_handler_observer.rb:30:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable_partial.rb:20:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:26:in `benchmark'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:10:in `realtime'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:26:in `benchmark'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable_partial.rb:19:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/template.rb:194:in `render_template_without_html_namespacing'
/usr/lib64/ruby/gems/1.8/gems/adamh-html_namespacing-0.0.3/lib/html_namespacing/plugin/rails.rb:31:in `render_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable_partial.rb:44:in `render_partial'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/partials.rb:184:in `render_partial'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:262:in `render_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:12:in `render'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers.rb:57:in `non_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:12:in `render'
/data/polar/releases/20090616150122/app/helpers/content_pages_helper.rb:30:in `execute_render'
/data/polar/releases/20090616150122/app/helpers/content_pages_helper.rb:20:in `render_block'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:39:in `call'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:39:in `capture_without_haml'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:129:in `with_output_buffer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/helpers/capture_helper.rb:39:in `capture_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:92:in `capture'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/rails/init.rb:18:in `cache_it'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/lib/cache_advance/named_cache.rb:27:in `call'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/lib/cache_advance/named_cache.rb:27:in `value_for'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/lib/cache_advance/cache_set.rb:20:in `apply'
/usr/lib64/ruby/gems/1.8/gems/aub-cache_advance-1.1.2/rails/init.rb:17:in `cache_it'
/data/polar/releases/20090616150122/app/helpers/content_pages_helper.rb:19:in `render_block'
/data/polar/releases/20090616150122/app/views/content_pages/templates/volunteer/main.html.haml:48:in `_run_haml_app47views47content_pages47templates47volunteer47main46html46haml'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `send'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:34:in `render_without_template_handler_observer'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:301:in `with_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/renderable.rb:30:in `render_without_template_handler_observer'
/data/polar/releases/20090616150122/lib/template_handler_observer.rb:30:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/template.rb:194:in `render_template_without_html_namespacing'
/usr/lib64/ruby/gems/1.8/gems/adamh-html_namespacing-0.0.3/lib/html_namespacing/plugin/rails.rb:31:in `render_template'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:260:in `render_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:14:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:343:in `_render_with_layout'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/base.rb:257:in `render_without_haml'
/data/polar/releases/20090616150122/vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:14:in `render'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:1241:in `render_for_file'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/base.rb:937:in `render_without_benchmark'
/usr/lib64/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/benchmarking.rb:51:in `render'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:17:in `ms'
/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/benchmark.rb:10:in `realtime'
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/usr/bin/thin:19

Request

Parameters:

{"id"=>"volunteer"}

Show session dump

---

Response

Headers:

{"Content-Type"=>"text/html",
 "Cache-Control"=>"no-cache"}