"undefined method `options' for nil:NilClass" when using nestable_list

[natebeaty]

Trying to use nestable_list for a model that has a :position field—installed gem, added nestable to actions in rails_admin.rb:

  config.actions do
    nestable
  end

and in my models/perk.rb:

  rails_admin do
    ...
    nestable_list true
    ...
  end

Using rails_admin 0.6.0 and Rails 4.0.0.

Any help much appreciated. I cloned the gem locally and wasn't able to find where the issue was.

Framework trace:

vendor/gems/rails_admin_nestable/lib/rails_admin_nestable/helper.rb:32:in tree_max_depth' vendor/gems/rails_admin_nestable/app/views/rails_admin/main/nestable.html.haml:6:in_vendor_gems_rails_admin_nestable_app_views_rails_admin_main_nestable_html_haml___2739447881632247793_70350316666780'
actionpack (4.0.0) lib/action_view/template.rb:143:in block in render' activesupport (4.0.0) lib/active_support/notifications.rb:161:ininstrument'
actionpack (4.0.0) lib/action_view/template.rb:141:in render' actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:49:inblock (2 levels) in render_template'
actionpack (4.0.0) lib/action_view/renderer/abstract_renderer.rb:38:in block in instrument' activesupport (4.0.0) lib/active_support/notifications.rb:159:inblock in instrument'
activesupport (4.0.0) lib/active_support/notifications/instrumenter.rb:20:in instrument' activesupport (4.0.0) lib/active_support/notifications.rb:159:ininstrument'
actionpack (4.0.0) lib/action_view/renderer/abstract_renderer.rb:38:in instrument' actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:48:inblock in render_template'
actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:56:in render_with_layout' actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:47:inrender_template'
actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:17:in render' actionpack (4.0.0) lib/action_view/renderer/renderer.rb:42:inrender_template'
actionpack (4.0.0) lib/action_view/renderer/renderer.rb:23:in render' actionpack (4.0.0) lib/abstract_controller/rendering.rb:127:in_render_template'
actionpack (4.0.0) lib/action_controller/metal/streaming.rb:219:in _render_template' actionpack (4.0.0) lib/abstract_controller/rendering.rb:120:inrender_to_body'
actionpack (4.0.0) lib/action_controller/metal/rendering.rb:33:in render_to_body' actionpack (4.0.0) lib/action_controller/metal/renderers.rb:26:inrender_to_body'
actionpack (4.0.0) lib/abstract_controller/rendering.rb:97:in render' actionpack (4.0.0) lib/action_controller/metal/rendering.rb:16:inrender'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in block (2 levels) in render' activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:inblock in ms'
/Users/nate/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/benchmark.rb:296:in realtime' activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:inms'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in block in render' actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:84:incleanup_view_runtime'
activerecord (4.0.0) lib/active_record/railties/controller_runtime.rb:25:in cleanup_view_runtime' actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:40:inrender'
remotipart (1.2.1) lib/remotipart/render_overrides.rb:14:in render_with_remotipart' actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:10:indefault_render'
actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:4:in send_action' actionpack (4.0.0) lib/abstract_controller/base.rb:189:inprocess_action'
actionpack (4.0.0) lib/action_controller/metal/rendering.rb:10:in process_action' actionpack (4.0.0) lib/abstract_controller/callbacks.rb:18:inblock in process_action'
activesupport (4.0.0) lib/active_support/callbacks.rb:463:in _run__490290861130289315__process_action__callbacks' activesupport (4.0.0) lib/active_support/callbacks.rb:80:inrun_callbacks'
actionpack (4.0.0) lib/abstract_controller/callbacks.rb:17:in process_action' actionpack (4.0.0) lib/action_controller/metal/rescue.rb:29:inprocess_action'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:31:in block in process_action' activesupport (4.0.0) lib/active_support/notifications.rb:159:inblock in instrument'
activesupport (4.0.0) lib/active_support/notifications/instrumenter.rb:20:in instrument' activesupport (4.0.0) lib/active_support/notifications.rb:159:ininstrument'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:30:in process_action' actionpack (4.0.0) lib/action_controller/metal/params_wrapper.rb:245:inprocess_action'
activerecord (4.0.0) lib/active_record/railties/controller_runtime.rb:18:in process_action' actionpack (4.0.0) lib/abstract_controller/base.rb:136:inprocess'
actionpack (4.0.0) lib/abstract_controller/rendering.rb:44:in process' actionpack (4.0.0) lib/action_controller/metal.rb:195:indispatch'
actionpack (4.0.0) lib/action_controller/metal/rack_delegation.rb:13:in dispatch' actionpack (4.0.0) lib/action_controller/metal.rb:231:inblock in action'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:in call' actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:indispatch'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:48:in call' actionpack (4.0.0) lib/action_dispatch/journey/router.rb:71:inblock in call'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in each' actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:incall'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in call' railties (4.0.0) lib/rails/engine.rb:511:incall'
railties (4.0.0) lib/rails/railtie/configurable.rb:30:in method_missing' actionpack (4.0.0) lib/action_dispatch/journey/router.rb:71:inblock in call'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in each' actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:incall'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in call' omniauth (1.1.4) lib/omniauth/strategy.rb:184:incall!'
omniauth (1.1.4) lib/omniauth/strategy.rb:164:in call' omniauth (1.1.4) lib/omniauth/strategy.rb:184:incall!'
omniauth (1.1.4) lib/omniauth/strategy.rb:164:in call' omniauth (1.1.4) lib/omniauth/strategy.rb:184:incall!'
omniauth (1.1.4) lib/omniauth/strategy.rb:164:in call' rack-raw-upload (1.1.1) lib/rack/raw_upload.rb:18:incall'
rack-pjax (0.7.0) lib/rack/pjax.rb:12:in call' rack-ssl-enforcer (0.2.6) lib/rack/ssl-enforcer.rb:51:incall'
warden (1.2.3) lib/warden/manager.rb:35:in block in call' warden (1.2.3) lib/warden/manager.rb:34:incatch'
warden (1.2.3) lib/warden/manager.rb:34:in call' rack (1.5.2) lib/rack/etag.rb:23:incall'
rack (1.5.2) lib/rack/conditionalget.rb:25:in call' rack (1.5.2) lib/rack/head.rb:11:incall'
remotipart (1.2.1) lib/remotipart/middleware.rb:27:in call' actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:27:incall'
actionpack (4.0.0) lib/action_dispatch/middleware/flash.rb:241:in call' rack (1.5.2) lib/rack/session/abstract/id.rb:225:incontext'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in call' actionpack (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:incall'
activerecord (4.0.0) lib/active_record/query_cache.rb:36:in call' activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:incall'
activerecord (4.0.0) lib/active_record/migration.rb:369:in call' actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:29:inblock in call'
activesupport (4.0.0) lib/active_support/callbacks.rb:373:in _run__1102643539860257370__call__callbacks' activesupport (4.0.0) lib/active_support/callbacks.rb:80:inrun_callbacks'
actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:27:in call' actionpack (4.0.0) lib/action_dispatch/middleware/reloader.rb:64:incall'
actionpack (4.0.0) lib/action_dispatch/middleware/remote_ip.rb:76:in call' actionpack (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:incall'
actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in call' railties (4.0.0) lib/rails/rack/logger.rb:38:incall_app'
railties (4.0.0) lib/rails/rack/logger.rb:21:in block in call' activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:inblock in tagged'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:in tagged' activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:intagged'
railties (4.0.0) lib/rails/rack/logger.rb:21:in call' actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:incall'
rack (1.5.2) lib/rack/methodoverride.rb:21:in call' rack (1.5.2) lib/rack/runtime.rb:17:incall'
activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in call' rack (1.5.2) lib/rack/lock.rb:17:incall'
actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in call' railties (4.0.0) lib/rails/engine.rb:511:incall'
railties (4.0.0) lib/rails/application.rb:97:in call' /Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:145:inhandle'
/Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:99:in rescue in block (2 levels) in start' /Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:96:inblock (2 levels) in start'
/Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:86:in each' /Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:86:inblock in start'
/Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:66:in loop' /Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:66:instart'
/Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/lib/nack/server.rb:13:in run' /Users/nate/Library/Application Support/Pow/Versions/0.4.1/node_modules/nack/bin/nack_worker:4:in

'

[natebeaty]

Well this is odd. I set up a test Rails 4 app with just rails_admin, rails_admin_nestable, and a simple scaffold for Perk and it works fine:

https://github.com/natebeaty/nestable_test

Argh. Any suggestions as to where to look would be appreciated.

I'll recreate my project from scratch and see if I can find where the conflict is arising.