Re: [Rails] set a progressive number.

On 16 June 2011 21:24, Walter Lee Davis <waltd@wdstudio.com> wrote:
>
> On Jun 16, 2011, at 4:15 PM, Mauro wrote:
>
>> I want to assign a progressive number to an attribute.
>> I think that I can do this in the model
>>
>> class Model < ActiveRecord::Base
>> before_validation(:on => :create) do
>>  attribute = Model.count + 1
>>
>> But there is no method count for Model.
>
> Is Model just an example, or did you use that as your model name?

The real code is:

class FirePrevention < ActiveRecord::Base
default_scope :order => 'practice_number ASC'
before_validation(:on => :create) do
practice_number = self.count + 1
end

It says undefined method count...........

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.