search for: execute_grouped_calculation

...d/connection_adapters/oracle_adapter.rb:310:in `add_limit_offset!'' ./test/../lib/active_record/base.rb:1046:in `add_limit!'' ./test/../lib/active_record/calculations.rb:156:in `construct_calculation_sql'' ./test/../lib/active_record/calculations.rb:172:in `execute_grouped_calculation'' ./test/../lib/active_record/calculations.rb:139:in `calculate'' ./test/../lib/active_record/calculations.rb:92:in `sum'' ./test/calculations_test.rb:52:in `test_should_limit_calculation'' 2) Error: test_should_limit_calculation_with_offset(Calcul...

Hi! I got a class named EinsatzFilter which I serialized to session. Before saving to session it works afterwards I keep getting the message: "undefined method `to_s'' for #<Person:0x38c6ab8>". "Person" is a from ActiveRecord::Base inherited class. Code: class EinsatzFilter include ApplicationHelper attr_reader :personen, :monat, :projekte, :kunde