Hi,
after updating to rails1.0 (using the debian package) and following the
instructions at Peak Obsession
I always get in my rails application the following error:
“undefined method `updated?’ for #Device:0xb6c95564”
when I want to save (create or update) an interface or device-object
(as explanation: devices are servers, which have many interfaces).
Thank you in advance for your help to find my mistake!
Kind Regards
Peter
My relevant code snippets are:
------------------- models/device.rb ---------------------
class Device < ActiveRecord::Base
belongs_to :devicetype
belongs_to :devicemodel
belongs_to :cabinet
has_many :interfaces
has_and_belongs_to_many :groups
validates_presence_of :name, :he
validates_uniqueness_of :name
validates_numericality_of :he
[…]
end
------------------- models/device.rb ---------------------
class Interface < ActiveRecord::Base
belongs_to :device
belongs_to :cable
belongs_to :patchcable
validates_presence_of :name, :device_id
[…]
end
I want to add a comment to an existing interface, so here’s the update
method:
------------------- controllers/interfaces_controller.rb
[…]
def update
@interface = Interface.find(params[:id])
unless @interface.device.is_writable(@logged_user)
flash[:error] = ‘Keine Berechtigung!’
redirect_to :action => ‘show’, :id => @interface.id
else
if params[:interface][:upstream] != “1”
params[:interface][:upstream] = ‘’
end
if @interface.update_attributes(params[:interface])
flash[:notice] = ‘Schnittstelle wurde aktualisiert.’
redirect_to :action => ‘show’, :id => @interface
else
render :action => ‘edit’
end
end
end
[…]
An interface object consists of name and comment and has relations to a
server
and a cable (and sometimes to an extra patchcable).
The error message I get is:
NoMethodError in Interfaces#update
undefined method `updated?’ for #Device:0xb6c95564
RAILS_ROOT: […]
(Full Trace, “#{RAILS_ROOT}” removed to get rid of some line breaks…)
/vendor/rails/activerecord/lib/active_record/base.rb:1498:in
method_missing' /vendor/rails/activerecord/lib/active_record/callbacks.rb:341:in callback’
/vendor/rails/activerecord/lib/active_record/callbacks.rb:335:in
callback' /vendor/rails/activerecord/lib/active_record/callbacks.rb:330:in each’
/vendor/rails/activerecord/lib/active_record/callbacks.rb:330:in
callback' /vendor/rails/activerecord/lib/active_record/callbacks.rb:248:in create_or_update’
/vendor/rails/activerecord/lib/active_record/base.rb:1226:in
save_without_validation' /vendor/rails/activerecord/lib/active_record/validations.rb:698:in save_without_transactions’
/vendor/rails/activerecord/lib/active_record/transactions.rb:126:in
save' /vendor/rails/activerecord/lib/active_record/transactions.rb:126:in transaction’
/vendor/rails/activerecord/lib/active_record/transactions.rb:91:in
transaction' /vendor/rails/activerecord/lib/active_record/transactions.rb:118:in transaction’
/vendor/rails/activerecord/lib/active_record/transactions.rb:126:in
save' /vendor/rails/activerecord/lib/active_record/base.rb:1267:in update_attributes’
/app/controllers/interfaces_controller.rb:102:in update' /vendor/rails/actionpack/lib/action_controller/base.rb:853:in perform_action_without_filters’
/vendor/rails/actionpack/lib/action_controller/filters.rb:332:in
perform_action_without_benchmark' /vendor/rails/actionpack/lib/action_controller/benchmarking.rb:69:in perform_action_without_rescue’
/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:69:in
measure' /vendor/rails/actionpack/lib/action_controller/benchmarking.rb:69:in perform_action_without_rescue’
/vendor/rails/actionpack/lib/action_controller/rescue.rb:82:in
perform_action' /vendor/rails/actionpack/lib/action_controller/base.rb:369:in process_without_session_management_support’
/vendor/rails/actionpack/lib/action_controller/session_management.rb:116:in
process' /vendor/rails/railties/lib/dispatcher.rb:38:in dispatch’
/var/www/ccm-psaenger.ncc.eurodata.de_8080/public/dispatch.cgi:12