On Jun 16, 2011, at 5:46 PM, Mauro wrote:
On 16 June 2011 21:41, Walter Lee Davis <wa...@wdstudio.com> wrote:
On Jun 16, 2011, at 5:39 PM, Mauro wrote:
On 16 June 2011 21:36, Walter Lee Davis <wa...@wdstudio.com> wrote:
On Jun 16, 2011, at 5:32 PM, Mauro wrote:
On 16 June 2011 21:24, Walter Lee Davis <wa...@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 may be getting a funny self there, then. Try this instead:
practice_number = FirePrevention.count + 1
It's the same, same error.
Have you tried this in rails console? In a new blank project, maybe?
That work if I call FirePrevention.count from a controller.
That actually makes a ton of sense, since the Model has no notion of
the collection of sibling objects, only the Empyrean ideal of the
Model that spawned them. But count is a property of a collection of
unique objects.
Walter
--
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-
t...@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com
.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en
.
--
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+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.
