gistfile1.txt

two models:

ChecklistItem and ChecklistItemMedia

C.I. has_many :files, :class_name => ChecklistItemMedia

C.I.M. belongs_to :c_i

added "checklist_item_id" column tot he CIM database table


in script/console: 
@ci = ChecklistItem.find(47) #it's a valid item

@ci.files

this happens:

TypeError: can't convert Class into String
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/base.rb:2197:in `class_eval'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/base.rb:2197:in `compute_type'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activesupport-2.3.5/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/base.rb:2195:in `compute_type'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/reflection.rb:156:in `send'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/reflection.rb:156:in `klass'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/reflection.rb:187:in `quoted_table_name'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/associations/has_many_association.rb:97:in `construct_sql'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/associations/association_collection.rb:21:in `initialize'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/associations.rb:1300:in `new'
	from /Users/erauqssi/.rvm/gems/ruby-1.8.7-p302@nimonik/gems/activerecord-2.3.5/lib/active_record/associations.rb:1300:in `files'
	from (irb):2