Parametros inválidos ao deletar

Programação Ruby on Rails
#1

Olá gente, tenho uma aplicação construida em Ruby on Rails e estou com um problema ao deletar. O seguinte log é gravado com o erro:

ActiveRecord::StatementInvalid (TinyTds::Error: Incorrect syntax near ','.: EXEC sp_executesql N' SELECT distinct parent.*, LEN(parent.path) - LEN(REPLACE( parent.path,''.'','''')) level, tc.active, IIF(EXISTS( SELECT * FROM impasse_test_plan_cases AS tpc WHERE tpc.test_case _id = parent.id ),1,0) AS planned FROM impasse_nodes AS parent JOIN impasse_nodes AS child ON parent.path = SUBSTRING(child.path, 1, LEN(parent.path)) LEFT JOIN impasse_test_cases AS tc ON child.id = tc.id WHERE parent.path LIKE N''.14582.14292.%'' ORDER BY level DESC '):

Este é o método para remover:

[code]def destroy
params[:node][:id].each do |id|
node = Impasse::Node.find(id)

  inactive_cases = []
  ActiveRecord::Base.transaction do
    node.all_decendant_cases_with_plan.each do |child|
      if child.planned?
        Impasse::TestCase.update_all({:active => false}, ["id=?", child.id])
        inactive_cases << child
      else
        case child.node_type_id
        when 2                
           if inactive_cases.all? {|ic| ! ic.path.start_with? child.path}
            Impasse::TestSuite.delete(id)
            child.destroy
          end
		when 3
          Impasse::TestCase.delete(child.id)
          child.destroy
		end
      end
    end
  end
end

render :json => {:status => true}

end[/code]

Obrigada!!

#2