company.rb

  def save_2
    save
  end


 after :save, :update_opinions_rank

 def update_opinions_rank
    raise
 end

gistfile2.txt

>> Company.get(2).save
 ~ SELECT "crypted_password", "salt", "id", "login", "email", "name", "first_name", "last_name", "street", "postcode", "city", "phone", "www", "rank", "trade_id", "type", "created_at", "updated_at", "activated_at", "activation_code" FROM "users" WHERE ("type" IN ('Company')) AND ("id" = 2) ORDER BY "id" LIMIT 1
 ~ SELECT "id" FROM "users" WHERE ("type" IN ('Company')) AND ("login" = 'empire') ORDER BY "id" LIMIT 1
 ~ SELECT "id" FROM "users" WHERE ("type" IN ('Company')) AND ("email" = '[email protected]') ORDER BY "id" LIMIT 1
 ~ SELECT "id", "name" FROM "trades" WHERE ("id" IN (3)) ORDER BY "id"
RuntimeError: 
	from /Users/teamon/Sites/current/ps12/app/models/user.rb:110:in `update_opinions_rank'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:263:in `execute_after_save_nan_hook_stack'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:295:in `save!'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:292:in `catch'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:292:in `save!'
	from /Library/Ruby/Gems/1.8/gems/dm-validations-0.9.6/lib/dm-validations.rb:62:in `save'
	from (irb):1
>> Company.get(2).save_2
 ~ SELECT "crypted_password", "salt", "id", "login", "email", "name", "first_name", "last_name", "street", "postcode", "city", "phone", "www", "rank", "trade_id", "type", "created_at", "updated_at", "activated_at", "activation_code" FROM "users" WHERE ("type" IN ('Company')) AND ("id" = 2) ORDER BY "id" LIMIT 1
 ~ SELECT "id" FROM "users" WHERE ("type" IN ('Company')) AND ("login" = 'empire') ORDER BY "id" LIMIT 1
 ~ SELECT "id" FROM "users" WHERE ("type" IN ('Company')) AND ("email" = '[email protected]') ORDER BY "id" LIMIT 1
 ~ SELECT "id", "name" FROM "trades" WHERE ("id" IN (3)) ORDER BY "id"
RuntimeError: 
	from /Users/teamon/Sites/current/ps12/app/models/user.rb:110:in `update_opinions_rank'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:263:in `execute_after_save_nan_hook_stack'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:295:in `save!'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:292:in `catch'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:292:in `save!'
	from /Library/Ruby/Gems/1.8/gems/dm-validations-0.9.6/lib/dm-validations.rb:62:in `save'
	from /Users/teamon/Sites/current/ps12/app/models/company.rb:39:in `save_2'
	from (irb):2
>> Opinion.get(3).product.owner.save
 ~ SELECT "id", "rank", "status", "verification_hash", "created_at", "updated_at", "purchased_at", "satisfaction", "accordance", "product_id", "user_id", "consultee_id" FROM "opinions" WHERE ("deleted_at" IS NULL) AND ("id" = 3) ORDER BY "id" LIMIT 1
 ~ SELECT "category_id", "id", "type", "name", "testers_num", "created_at", "updated_at", "owner_id" FROM "products" WHERE ("deleted_at" IS NULL) AND ("id" IN (1)) ORDER BY "id"
 ~ SELECT "crypted_password", "salt", "id", "login", "email", "name", "first_name", "last_name", "street", "postcode", "city", "phone", "www", "rank", "trade_id", "type", "created_at", "updated_at", "activated_at", "activation_code" FROM "users" WHERE ("id" IN (2)) ORDER BY "id"
=> true
>> Opinion.get(3).product.owner.save_2
 ~ SELECT "id", "rank", "status", "verification_hash", "created_at", "updated_at", "purchased_at", "satisfaction", "accordance", "product_id", "user_id", "consultee_id" FROM "opinions" WHERE ("deleted_at" IS NULL) AND ("id" = 3) ORDER BY "id" LIMIT 1
 ~ SELECT "category_id", "id", "type", "name", "testers_num", "created_at", "updated_at", "owner_id" FROM "products" WHERE ("deleted_at" IS NULL) AND ("id" IN (1)) ORDER BY "id"
 ~ SELECT "crypted_password", "salt", "id", "login", "email", "name", "first_name", "last_name", "street", "postcode", "city", "phone", "www", "rank", "trade_id", "type", "created_at", "updated_at", "activated_at", "activation_code" FROM "users" WHERE ("id" IN (2)) ORDER BY "id"
 ~ SELECT "id" FROM "users" WHERE ("type" IN ('Company')) AND ("login" = 'empire') ORDER BY "id" LIMIT 1
 ~ SELECT "id" FROM "users" WHERE ("type" IN ('Company')) AND ("email" = '[email protected]') ORDER BY "id" LIMIT 1
 ~ SELECT "id", "name" FROM "trades" WHERE ("id" IN (3)) ORDER BY "id"
RuntimeError: 
	from /Users/teamon/Sites/current/ps12/app/models/user.rb:110:in `update_opinions_rank'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:263:in `execute_after_save_nan_hook_stack'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:295:in `save!'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:292:in `catch'
	from /Library/Ruby/Gems/1.8/gems/extlib-0.9.8/lib/extlib/hook.rb:292:in `save!'
	from /Library/Ruby/Gems/1.8/gems/dm-validations-0.9.6/lib/dm-validations.rb:62:in `save'
	from /Users/teamon/Sites/current/ps12/app/models/company.rb:39:in `save_2'
	from /Library/Ruby/Gems/1.8/gems/dm-core-0.9.6/lib/dm-core/associations/many_to_one.rb:102:in `__send__'
	from /Library/Ruby/Gems/1.8/gems/dm-core-0.9.6/lib/dm-core/associations/many_to_one.rb:102:in `method_missing'
	from (irb):4
>> 

gistfile3.txt

SHORT VERSION
>> Company.get(2).save # => RuntimeError: 
>> Company.get(2).save_2 # => RuntimeError:
>> Opinion.get(3).product.owner.save # => true
>> Opinion.get(3).product.owner.save_2 # => RuntimeError: