# Undefined method on web and not in irb **URL:** \ **Category:** Rails\ **Created:** [March 7, 2010, 8:42pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744 "2010-03-07T20:42:17Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![roa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@roa](https://www.ruby-forum.com/u/roa)\ **Post date:** [March 7, 2010, 8:42pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744/1 "2010-03-07T20:42:17Z")
Hi all I seem to have a small problem in Rails. Lets say I have a class Foo with an habtm association to Bar. So Foo has\_and\_belongs\_to Bars en vice versa. Now, when I do lets say Foo.new Foo.bars, I get an undefined method bars for #Foo:0x1034f2f00 when I run it through the browser. Now, when I do it through irb, it returns an empty array as expected. Does someone here has any clue how this can happen and what I need to look for, becouse I’m completely clueless. Thanks for any tips. ---
**Author:** ![roa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@roa](https://www.ruby-forum.com/u/roa)\ **Post date:** [March 7, 2010, 8:53pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744/2 "2010-03-07T20:53:57Z")
On Mar 7, 7:42 pm, Michael R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > run it through the browser. > > Now, when I do it through irb, it returns an empty array as expected. > Does someone here has any clue how this can happen and what I need to > look for, becouse I’m completely clueless. Random guess: does this still occur in production mode ? Fred ---
**Author:** ![roa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@roa](https://www.ruby-forum.com/u/roa)\ **Post date:** [March 7, 2010, 8:56pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744/3 "2010-03-07T20:56:33Z")
Frederick C. wrote: > On Mar 7, 7:42�pm, Michael R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > run it through the browser. > > > > Now, when I do it through irb, it returns an empty array as expected. > > Does someone here has any clue how this can happen and what I need to > > look for, becouse I’m completely clueless. > > Random guess: does this still occur in production mode ? > > Fred unfortunately is does ---
**Author:** ![roa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@roa](https://www.ruby-forum.com/u/roa)\ **Post date:** [March 7, 2010, 10:51pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744/4 "2010-03-07T22:51:03Z")
On 7 March 2010 19:42, Michael R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > run it through the browser. > Foo.bars is not valid as Foo is a class not an instance, or is that > just a typo here? It should be something like > foo = Foo.new > then use foo.bars Colin ---
**Author:** ![roa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@roa](https://www.ruby-forum.com/u/roa)\ **Post date:** [March 7, 2010, 9:06pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744/5 "2010-03-07T21:06:16Z")
On Mar 7, 7:56 pm, Michael R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > Fred > > unfortunately is does Is Foo defined in multiple places (some editors leave behind backup copies of files that Rails loads anyway) ? If you stick a breakpoint in does the Foo object you have look normal apart from raising an error when bars is called ? Fred ---
**Author:** ![roa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@roa](https://www.ruby-forum.com/u/roa)\ **Post date:** [March 7, 2010, 11:18pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744/6 "2010-03-07T23:18:01Z")
Frederick C. wrote: > On Mar 7, 7:56�pm, Michael R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > Fred > > > > unfortunately is does > > Is Foo defined in multiple places (some editors leave behind backup > copies of files that Rails loads anyway) ? If you stick a breakpoint > in does the Foo object you have look normal apart from raising an > error when bars is called ? > > Fred What just stuk me is that when I set a breakpoint at the class Foo \< ActiveRecord::Base line, it doesn’t stop. It just runs through the application till it hits foo.bars :s ---
**Author:** ![roa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@roa](https://www.ruby-forum.com/u/roa)\ **Post date:** [March 7, 2010, 11:15pm UTC](https://www.ruby-forum.com/t/undefined-method-on-web-and-not-in-irb/184744/7 "2010-03-07T23:15:48Z")
Colin L. wrote: > On 7 March 2010 19:42, Michael R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > run it through the browser. > > Foo.bars is not valid as Foo is a class not an instance, or is that > > just a typo here? It should be something like > > foo = Foo.new > > then use foo.bars > > Colin @Colin: yes, sorry for the mistake. I do run foo = Foo.new and then foo.bars. @Fred: just entered a break point. Seems like a normal object of type Foo with all its attributes present, except for the associations and self declared methods inside my model