Hi, This was happened when i tried to give "Model.find " option in Query interface.
On 6 September 2010 13:32, Kannan <[email protected]> wrote: > Hi, > > Me too got same error... I attached Full trace here... Kindly suggest > on this issue... > > undefined method `eq' for nil:NilClass > > activesupport (3.0.0) lib/active_support/whiny_nil.rb:48:in > `method_missing' > activerecord (3.0.0) lib/active_record/relation/finder_methods.rb: > 291:in `find_one' > activerecord (3.0.0) lib/active_record/relation/finder_methods.rb: > 281:in `find_with_ids' > activerecord (3.0.0) lib/active_record/relation/finder_methods.rb: > 107:in `find' > activerecord (3.0.0) lib/active_record/base.rb:439:in `find' > app/models/taxa.rb:2:in `<class:Taxa>' > app/models/taxa.rb:1:in `<top (required)>' > activesupport (3.0.0) lib/active_support/dependencies.rb:454:in `load' > activesupport (3.0.0) lib/active_support/dependencies.rb:454:in `block > in load_file' > activesupport (3.0.0) lib/active_support/dependencies.rb:591:in > `new_constants_in' > activesupport (3.0.0) lib/active_support/dependencies.rb:453:in > `load_file' > activesupport (3.0.0) lib/active_support/dependencies.rb:340:in > `require_or_load' > activesupport (3.0.0) lib/active_support/dependencies.rb:491:in > `load_missing_constant' > activesupport (3.0.0) lib/active_support/dependencies.rb:183:in `block > in const_missing' > activesupport (3.0.0) lib/active_support/dependencies.rb:181:in `each' > activesupport (3.0.0) lib/active_support/dependencies.rb:181:in > `const_missing' > activesupport (3.0.0) lib/active_support/dependencies.rb:503:in > `load_missing_constant' > activesupport (3.0.0) lib/active_support/dependencies.rb:183:in `block > in const_missing' > activesupport (3.0.0) lib/active_support/dependencies.rb:181:in `each' > activesupport (3.0.0) lib/active_support/dependencies.rb:181:in > `const_missing' > app/controllers/taxas_controller.rb:5:in `index' > actionpack (3.0.0) lib/action_controller/metal/implicit_render.rb:4:in > `send_action' > actionpack (3.0.0) lib/abstract_controller/base.rb:150:in > `process_action' > actionpack (3.0.0) lib/action_controller/metal/rendering.rb:11:in > `process_action' > actionpack (3.0.0) lib/abstract_controller/callbacks.rb:18:in `block > in process_action' > activesupport (3.0.0) lib/active_support/callbacks.rb:435:in > `_run__402958380944449391__process_action__4448255831886203218__callbacks' > activesupport (3.0.0) lib/active_support/callbacks.rb:409:in > `_run_process_action_callbacks' > activesupport (3.0.0) lib/active_support/callbacks.rb:93:in > `run_callbacks' > actionpack (3.0.0) lib/abstract_controller/callbacks.rb:17:in > `process_action' > actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb: > 30:in `block in process_action' > activesupport (3.0.0) lib/active_support/notifications.rb:52:in `block > in instrument' > activesupport (3.0.0) lib/active_support/notifications/instrumenter.rb: > 21:in `instrument' > activesupport (3.0.0) lib/active_support/notifications.rb:52:in > `instrument' > actionpack (3.0.0) lib/action_controller/metal/instrumentation.rb: > 29:in `process_action' > actionpack (3.0.0) lib/action_controller/metal/rescue.rb:17:in > `process_action' > actionpack (3.0.0) lib/abstract_controller/base.rb:119:in `process' > actionpack (3.0.0) lib/abstract_controller/rendering.rb:40:in > `process' > actionpack (3.0.0) lib/action_controller/metal.rb:133:in `dispatch' > actionpack (3.0.0) lib/action_controller/metal/rack_delegation.rb: > 14:in `dispatch' > actionpack (3.0.0) lib/action_controller/metal.rb:173:in `block in > action' > actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:62:in > `call' > actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:62:in > `dispatch' > actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:27:in > `call' > rack-mount (0.6.13) lib/rack/mount/route_set.rb:148:in `block in call' > rack-mount (0.6.13) lib/rack/mount/code_generation.rb:93:in `block in > recognize' > rack-mount (0.6.13) lib/rack/mount/code_generation.rb:68:in > `optimized_each' > rack-mount (0.6.13) lib/rack/mount/code_generation.rb:92:in > `recognize' > rack-mount (0.6.13) lib/rack/mount/route_set.rb:139:in `call' > actionpack (3.0.0) lib/action_dispatch/routing/route_set.rb:492:in > `call' > actionpack (3.0.0) lib/action_dispatch/middleware/ > best_standards_support.rb:17:in `call' > actionpack (3.0.0) lib/action_dispatch/middleware/head.rb:14:in `call' > rack (1.2.1) lib/rack/methodoverride.rb:24:in `call' > actionpack (3.0.0) lib/action_dispatch/middleware/params_parser.rb: > 21:in `call' > actionpack (3.0.0) lib/action_dispatch/middleware/flash.rb:182:in > `call' > actionpack (3.0.0) lib/action_dispatch/middleware/session/ > abstract_store.rb:149:in `call' > actionpack (3.0.0) lib/action_dispatch/middleware/cookies.rb:287:in > `call' > activerecord (3.0.0) lib/active_record/query_cache.rb:32:in `block in > call' > activerecord (3.0.0) lib/active_record/connection_adapters/abstract/ > query_cache.rb:28:in `cache' > activerecord (3.0.0) lib/active_record/query_cache.rb:12:in `cache' > activerecord (3.0.0) lib/active_record/query_cache.rb:31:in `call' > activerecord (3.0.0) lib/active_record/connection_adapters/abstract/ > connection_pool.rb:355:in `call' > actionpack (3.0.0) lib/action_dispatch/middleware/callbacks.rb:46:in > `block in call' > activesupport (3.0.0) lib/active_support/callbacks.rb:415:in > `_run_call_callbacks' > actionpack (3.0.0) lib/action_dispatch/middleware/callbacks.rb:44:in > `call' > rack (1.2.1) lib/rack/sendfile.rb:107:in `call' > actionpack (3.0.0) lib/action_dispatch/middleware/remote_ip.rb:48:in > `call' > actionpack (3.0.0) lib/action_dispatch/middleware/show_exceptions.rb: > 46:in `call' > railties (3.0.0) lib/rails/rack/logger.rb:13:in `call' > rack (1.2.1) lib/rack/runtime.rb:17:in `call' > activesupport (3.0.0) lib/active_support/cache/strategy/local_cache.rb: > 72:in `call' > rack (1.2.1) lib/rack/lock.rb:11:in `block in call' > <internal:prelude>:10:in `synchronize' > rack (1.2.1) lib/rack/lock.rb:11:in `call' > actionpack (3.0.0) lib/action_dispatch/middleware/static.rb:30:in > `call' > railties (3.0.0) lib/rails/application.rb:168:in `call' > railties (3.0.0) lib/rails/application.rb:77:in `method_missing' > railties (3.0.0) lib/rails/rack/log_tailer.rb:14:in `call' > rack (1.2.1) lib/rack/content_length.rb:13:in `call' > rack (1.2.1) lib/rack/handler/webrick.rb:52:in `service' > /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service' > /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run' > /usr/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in > start_thread' > > On Aug 18, 1:56 pm, Colin Law <[email protected]> wrote: > > On 18 August 2010 12:36, Abder-Rahman Ali <[email protected]> wrote: > > > > > I'm walking through an example in the "Head First Rails" book, but, > > > instead doing the examples using Rails3.0.0.rc. > > > > > But, I'm getting this error when browsing for example: > > > > >http://localhost:3000/advs/1 > > > > > undefined method `eq' for nil:NilClass > > > > For an error like this it is better to show the full error trace, but > > first look at it yourself. Somewhere there you will usually find a > > reference to a line of your code. Look carefully at that line and the > > error and try and work out the problem yourself. The error is saying > > that you are trying to call a method on an object that is nil. A > > common cause of this is using the result of a find operation without > > checking that it did in fact find a record. > > > > If you still cannot see the problem then post the error trace and the > > code around the error. > > > > > > > > > Provided that my advs_controller.rb is as follows: > > > > >http://pastie.org/private/cd9zntg2ite57ept288kfa > > > > For only a few lines of code it is better in my opinion to put it > > inline rather than a pastie. Particularly consider those who may find > > the thread in months and years yet to come, hoping for enlightenment, > > only to find that the pastie has disappeared. > > > > Colin > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<rubyonrails-talk%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > > -- With Regards Palani Kannan. K Office: +49-531-2616-226 Mobile: +4917647098166 -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
