NoMethodError: undefined method `association'

[PhilT]

In IRB (Ruby 1.9.2-p290, Rails 3.0.17):

class CreateCategories < ActiveRecord::Migration
  def self.up
    create_table :categories do |t|
      t.string :name
      t.integer :parent_id
      t.integer :lft
      t.integer :rgt
      t.integer :depth # this is optional.
    end
  end

  def self.down
    drop_table :categories
  end
end

CreateCategories.up
class Category < ActiveRecord::Base
  acts_as_nested_set
end

parent = Category.create  name: 'parent'
child = Category.create  name: 'child'
child.move_to_child_of parent

NoMethodError: undefined method `association' for #<Category:0x00000008cd2758>
from activemodel-3.0.17/lib/active_model/attribute_methods.rb:392:in `method_missing'
from activerecord-3.0.17/lib/active_record/attribute_methods.rb:46:in `method_missing'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:459:in `compute_level'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:351:in `level'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:500:in `block in set_depth!'
from activerecord-3.0.17/lib/active_record/connection_adapters/abstract/database_statements.rb:139:in `transaction'
from activerecord-3.0.17/lib/active_record/transactions.rb:207:in `transaction'
from activerecord-3.0.17/lib/active_record/transactions.rb:231:in `transaction'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:518:in `in_tenacious_transaction'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:497:in `set_depth!'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:643:in `block in move_to'
from activesupport-3.0.17/lib/active_support/callbacks.rb:414:in `_run_move_callbacks'
from activesupport-3.0.17/lib/active_support/callbacks.rb:94:in `run_callbacks'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:576:in `move_to'
from awesome_nested_set-2.1.4/lib/awesome_nested_set/awesome_nested_set.rb:423:in `move_to_child_of'
from (irb):34
from railties-3.0.17/lib/rails/commands/console.rb:44:in `start'
from railties-3.0.17/lib/rails/commands/console.rb:8:in `start'
from railties-3.0.17/lib/rails/commands.rb:23:in `<top (required)>'
from script/rails:6:in `require'

This works in awesome_nested_set version: 2.0.2 (Just tested in IRB as well).

I'll test other versions and see when it was introduced. Could it be something to do with it being an older version of Rails?

UPDATE: Looks like it's working up to and including 2.1.3. So possibly introduced in 2.1.4.

[krsch]

The same bug on rails 3.0.11 and ruby ee 1.8.7 p358 2012.02
Returning to awesome_nested_set 2.1.3 also helps.

[st-keller]

Same Problem with Rails 3.0.13:

2.1.4 shows the "undefined method `association'" (when we call 'save' or 'save!'),
2.1.3 just works fine

[parndt]

Bonus points if anybody can bisect the commit that caused this and explain why :-)

[parndt]

I've added 3.0, 3.1 and 3.2 as test targets on Travis CI which reveal the issue in 3.0.x:

http://travis-ci.org/#!/collectiveidea/awesome_nested_set/builds/2576086

[parndt]

We have had to do similar workaround in the past for globalize3:

svenfuchs/globalize3@e8f82239

Perhaps that'll help someone.

[parndt]

Solved it. I'll wait for the tests to pass and then release 2.1.5.

[parndt]

Version 2.1.5 released to RubyGems. Thanks @PhilT @krsch @st-keller

We have far better regression testing, now :-)