exists? && new? undefined in ActiveRecord::Base???

rubyonrails-talk
1

I've got a trivial Order class:

class Order < ActiveRecord::Base end

From the console:

Loading development environment (Rails 2.1.2)

o = Order.new

=> #<Order id: nil, partner_account_id: nil, delivery_status: nil, payment_status: nil, stock_status: nil, complete: nil, admin_notes: nil, partner_notes: nil, created_at: nil, updated_at: nil>

o.exists?

NoMethodError: undefined method `exists?' for #<Order:0x7ffd7eabcfd8>         from /home/tim/projects/distrome/trunk/vendor/rails/ activerecord/lib/active_record/attribute_methods.rb:251:in `method_missing'         from (irb):2

o.new?

NoMethodError: undefined method `new?' for #<Order:0x7ffd7eabcfd8>         from /home/tim/projects/distrome/trunk/vendor/rails/ activerecord/lib/active_record/attribute_methods.rb:251:in `method_missing'         from (irb):3

I've looked at the source and the methods are there. How can this be???

2

I've got a trivial Order class:

class Order < ActiveRecord::Base end

From the console:

Loading development environment (Rails 2.1.2)

o = Order.new

=> #<Order id: nil, partner_account_id: nil, delivery_status: nil, payment_status: nil, stock_status: nil, complete: nil, admin_notes: nil, partner_notes: nil, created_at: nil, updated_at: nil>

o.exists?

NoMethodError: undefined method `exists?' for #<Order:0x7ffd7eabcfd8>        from /home/tim/projects/distrome/trunk/vendor/rails/ activerecord/lib/active_record/attribute_methods.rb:251:in `method_missing'        from (irb):2

o.new?

NoMethodError: undefined method `new?' for #<Order:0x7ffd7eabcfd8>        from /home/tim/projects/distrome/trunk/vendor/rails/ activerecord/lib/active_record/attribute_methods.rb:251:in `method_missing'        from (irb):3

I've looked at the source and the methods are there. How can this be???

exists? is a class method, so Order.exists?( id_or_conditions) (what
would o.exists? even mean?)

There is no new? method, although there is one on
ActiveResource::Base. Did you mean o.new_record?

Fred

3

my bad... thought I was loosing my mind there.... I was looking at the code for ActiveResource::Base :frowning:

I was thinking that o.exists? would return whether the record exists in the database, basically what new_record? does.

I knew it had to be something obvious... Sorry for the distraction and thanks for setting me straight Fredrick!

Tim