>> y dc
--- !ruby/object:DeliveryChannel
attributes:
  user:
  updated_at:
  options:
  file_name:
  is_active:
  delivery_method: http
  server:
  password:
  path:
  created_at:
attributes_cache: {}

new_record: true
=> nil
>> dc.server
=> nil
>> helper.fields_for 'supplier[set_imports][]', dc do |ic_form| ic_form.text_field server; end
NameError: undefined local variable or method `server' for #<Object:0xb7ce09ac>
        from (irb):41
        from /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/helpers/form_helper.rb:248:in `fields_for'
        from (irb):41
        from :0