undefined method `isolation_level' for ActiveRecord::Base:Class

Question

Where does the call to the isolation_level come from?

My module fails at a.save!

module AppsHelpers      
  def self.create_app!
    a = App.new
    a.save!
    a
  end
end

The specific NoMethodError:

 Failure/Error: @app = AppsHelpers::create_app!
 NoMethodError:
   undefined method `isolation_level' for ActiveRecord::Base:Class

What could possibly cause this failure?

System:

ruby 1.9.3p448
Rails 3.2.8

Is `App` an ActiveRecord model? There's a built-in `create` method that does exactly what your `create_app` method does. — Zach Kemp, Feb 05 '14 at 19:55
Shouldn't you be calling `AppsHelpers.create_app!` instead of the `::`? — Helios de Guerra, Feb 05 '14 at 19:56
Can you post the code for App? That's were the problem is. You stack trace should give you more information — bridiver, Feb 06 '14 at 01:02

score 0 · Answer 1 · answered Feb 06 '14 at 17:40

0

This was simple. I was calling a method defined in the Transactional Isolation gem: The stacktrace was not helpful because I was calling it from an installed gem and this was a missing dependency.

answered Feb 06 '14 at 17:40

JZ.

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undefined method `isolation_level' for ActiveRecord::Base:Class

1 Answers1