SystemStackError: stack level too deep

Hi
I have two models Keyword and KeywordResult, they basically look like
this:

class KeywordResult < ActiveRecord::Base
belongs_to :keyword
validates_presence_of :title, :url, :keyword_id
end

class Keyword < ActiveRecord::Base
has_many :keyword_results, :dependent => :delete_all
acts_as_tree :order => “text”, :foreign_key => “top_keyword”
end

Before you ask: I commented all other callbacks and hooks out.

now when I want to add a KeywordResult I get a SystemStackError.

kw = Keyword.find(72)
=> #<Keyword:0x2595ec4 @attributes={“updated_at”=>“2006-07-25
23:50:54”, “text”=>“my keyword”, “lock_version”=>“14”, “id”=>“72”,
“lang”=>“de”, “top_keyword”=>“68”, “created_at”=>“2006-07-25 01:56:48”}>

kw.keyword_results
=> []

kw.keyword_results << KeywordResult.new({:title => “foobar”, :url =>
“foobar”})
SystemStackError: stack level too deep
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/…/…/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb:100:in
read_inheritable_attribute' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/callbacks.rb:354:incallbacks_for’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/callbacks.rb:330:in
callback' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/callbacks.rb:296:invalid?’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/validations.rb:743:in
save_without_transactions' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:120:insave_without_validation’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:51:in
transaction' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:86:intransaction’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/transactions.rb:112:in
transaction' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:120:insave_without_validation’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/validations.rb:744:in
save_without_transactions' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:120:insave_without_validation’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:51:in
transaction' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:86:intransaction’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/transactions.rb:112:in
transaction' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:120:insave_without_validation’
… 1229 levels…
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/transactions.rb:120:in
save_without_validation' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/validations.rb:744:insave_without_transactions’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/transactions.rb:120:in
save_without_validation' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:51:intransaction’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/transactions.rb:86:in
transaction' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:112:intransaction’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/transactions.rb:120:in
save_without_validation' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/validations.rb:744:insave’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/associations/has_many_association.rb:160:in
insert_record' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/associations/association_collection.rb:26:in<<’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/associations/association_collection.rb:23:in
<<' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:51:intransaction’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/transactions.rb:86:in
transaction' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/transactions.rb:112:intransaction’
from
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active_record/associations/association_collection.rb:22:in
`<<’

I don’t see any loops in my code (all callbacks and other validations
are commented out)

I hope you have some ideas…

Thanks, Tobias

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