Lighthouse has a new layout. Prefer the old one? Return to the old layout, and switch back any time from the link at the top of each page.

This project is archived and is in readonly mode.

uninitialized constant Merb ActionController

#1934

This is a bit of a mixed ticket - about a dependency on Merb in 2.3 rc 1 and a namespace error for Row in the csv lib and something else.

Running cucumber webrat tests on 2.3 rc1 source gives us errors like this, with the litany of merb gems installed but not configured in config/environment.rb .

<prFeature: Selecting Images # features/plain/manage/image_select.feature As a Content Manager/Admin I can assign an image to a Factsheet Scenario: Content Manager can browse and select an image # features/plain/manage/image_select.feature:6 Given I login as cm # features/step_definitions/webrat_steps.rb:131 uninitialized constant Merb (NameError) /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:443:in load_missing_constant' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:80:inconst_missing' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:92:in const_missing' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/field.rb:70:into_param' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:83:in params' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:82:ineach' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:82:in params' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:48:insubmit' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/field.rb:163:in click' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/scope.rb:149:inclicks_button' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/rails.rb:88:in send' /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/rails.rb:88:inmethod_missing' /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.0/lib/action_controller/integration.rb:553:in __send__' /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.0/lib/action_controller/integration.rb:553:inmethod_missing' ./features/step_definitions/webrat_steps.rb:137:in Given /^I login as cm$/' features/plain/manage/image_select.feature:7:inGiven I login as cm' When I edit a factsheet with id 1 # features/step_definitions/webrat_steps.rb:155 When I click link "Select Image" # features/step_definitions/webrat_steps.rb:89 e>

Adding merb as a dependency in config/environment.rb then trying to run things inevitably leads to a TypeError issuing out of csv.rb:

/opt/local/lib/ruby/1.8/csv.rb:26: superclass mismatch for class Row (TypeError)
        from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:156:in `require'
        from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:156:in `require'
        from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.3.0/lib/active_record/fixtures.rb:3
        from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:156:in `require'
        from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:156:in `require'
        from /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.0/lib/test_help.rb:13

Reported by Nicholas Faiz · February 10th, 2009 @ 11:49 PM

State: invalid
Milestone: 2.x
Assigned to: nobody
Importance: none

Activity

  1. Nicholas Faiz
    Nicholas Faiz

    Apologies for the poorly formatted stacktrace above. Here's a better version:

    Given I login as cm # features/step_definitions/webrat_steps.rb:131  uninitialized constant Merb (NameError)
 /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:443:in `load_missing_constant'
 /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:80:in `const_missing'
 /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.0/lib/active_support/dependencies.rb:92:in `const_missing'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/field.rb:70:in `to_param'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:83:in `params'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:82:in `each'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:82:in `params'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/form.rb:48:in `submit'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/field.rb:163:in `click'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/core/scope.rb:149:in `clicks_button'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/rails.rb:88:in `send'
 /usr/local/lib/ruby/gems/1.8/gems/webrat-0.3.4/lib/webrat/rails.rb:88:in `method_missing'
 /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.0/lib/action_controller/integration.rb:553:in `__send__'
 /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.0/lib/action_controller/integration.rb:553:in `method_missing'

    February 11th, 2009 @ 12:00 AM

  2. Pratik
    Pratik
    • State changed from new to invalid

    Doesn't look relevant to Rails.

    March 7th, 2009 @ 07:36 PM

  3. Nicholas Faiz
    Nicholas Faiz

    It issued from the Rails codebase. Another developer also saw the error.

    Perhaps the problem has gone away now, I don't know, but immediately closing the ticket because it "doesn't look relevant" isn't looking into the problem. I would at least try to run a cucumber test without a merb gem installed in the system, or search for merb in the Rails codebase before I closed this.

    March 7th, 2009 @ 11:58 PM

  4. CancelProfileIsBroken
    CancelProfileIsBroken
    • Rails full test suite runs fine with no merb on the system.
    • I have multiple Rails apps deployed on servers with no merb and no problems.
    • The only occurrence of the string "merb" in the Rails codebase is in a comment.

    Net: If you're getting a merb error in your application running cucumber tests, then the issue is either in merb or your own code. Feel free to reopen if you can submit a failing test that shows an issue on pure rails.

    March 8th, 2009 @ 12:19 AM

  5. Nicholas Faiz
    Nicholas Faiz

    Well, it's good that the issue has gone away.

    But of us (two developers encountering this error on RC 1 in its first week) had to install the latest Merb gems to make Rails run. When we switched back 2.1.2 we no longer them.

    Thanks for confirming it's no longer the case.

    March 8th, 2009 @ 12:27 AM

  6. copperkray (at gmail)
    copperkray (at gmail)
    • Tag set to actioncontroller, dependencies.rb
    • Title changed from uninitialized constant Merb (NameError) to Encountered same problem, no resolution yet

    Hi there - I've been encountering the same exact output:

    
/active_support/dependencies.rb:443:in `load_missing_constant'

    I inherited this rails project with lots of 3rd party gem dependencies from another company, and I'm wondering if the issue is a result of updating to a more recent version of Rails. I'm stumped - Every controller call to ActiveController is triggering the same error tracing to the active_support/dependencies.rb file - what is the constant that it can't locate? any helpful suggestions would be much appreciated.

    March 25th, 2009 @ 11:41 PM

  7. Pratik
    Pratik
    • Title changed from Encountered same problem, no resolution yet to uninitialized constant Merb (NameError)

    March 25th, 2009 @ 11:44 PM

  8. copperkray (at gmail)
    copperkray (at gmail)
    • Title changed from uninitialized constant Merb (NameError) to uninitialized constant Merb ActionController

    Ok - a little more information, cause I was stuck with this error awhile and couldn't figure out a solution. I thought it might have to do with sessions, or the boot.rb file - but nothing I did resolved the issue. Finally, inevitably, I rolled back the Rails version to 2.1.1, which solved the problem, what an idiot i smacked my forehead!!

    But what is going on here? It seems important to figure out what is going on between v2.1 and v2.3 that is breaking every Controller call in the app.

    March 26th, 2009 @ 10:51 PM

  9. Pratik
    Pratik

    This is NOT Rails problem. But it's likely to be related to some 3rd party gem you're using.

    March 26th, 2009 @ 10:55 PM

  10. Lawrence Pit
    Lawrence Pit

    The solution is to upgrade to the latest version of webrat.

    June 12th, 2009 @ 10:21 AM