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Editorial Team
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Asked: 2026-05-23T09:05:08+00:00

I am trying to deploy my Rails3.0 application on production server. There was many

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I am trying to deploy my Rails3.0 application on production server. There was many troubles before, but all of them solved. And now I have another.

There is a passenger error page’s text:

Error message:
uninitialized constant Formtastic::FormBuilder

Exception class:
NameError

Backtrace:

0 /home/ubuntu/.rvm/gems/ruby-1.9.2-p180@rails3.0/gems/client_side_validations-3.1.0/lib/client_side_validations/formtastic.rb 20 in `’

1 /home/ubuntu/projects/questroad/config/initializers/client_side_validations.rb 4 in '
2 /home/ubuntu/.rvm/gems/ruby-1.9.2-p180@rails3.0/gems/railties-3.0.7/lib/rails/engine.rb 201 inblock (2 levels) in ‘

3 /home/ubuntu/.rvm/gems/ruby-1.9.2-p180@rails3.0/gems/railties-3.0.7/lib/rails/engine.rb 200 in `each’

…

Google search results not helped me, and now I am here.

UPD:
Also if i try to run WEBrick server there was the same error.

UPD:
I try to comment “gem ‘client_side_validation'” line in Gemfile, and error is disappeared. But now i cant use this gem.

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1 Answer

  1. Editorial Team

    I experience the same issue but not on the production, i got this error in the development after doing a:

    bundle update

    and then try to run my rspecs.

    It seems that bundle update, installed client_side_validations 3.1.0 which seems to make problems ( … not sure why, I don’t have the time to analyze it atm), however using a fixed version in the Gemfile solved it:

    gem 'client_side_validations', '3.0.5'

    hope it helps!

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