On Tue, Apr 14, 2009 at 2:54 AM, Nick Faraday
<rails-mailing-l...@andreas-s.net> wrote:
>
> Ok, still not getting it...
>
> Here is what I would like to do: (pseudo-ruby)
>
> class User < ActiveRecord::Base
>
> # Input from user
> validates_presence_of :name, :message => "Your name can't be blank"
> validates_presence_of :city
>
> #User defined Method
> :permalink => create_permalink :name, :city
>
>
> validates_presence_of :permalink
>
>
> #Method Definition
> def create_permalink(name, city)
> ... permalink code
> return :permalink
> end
>
> end
>
> The reason I don't want to call it in the controller is there is no
> reason to (right?), other than I can't figure out how to call a
> self.method in ruby. It is just one more line of code in the controller
> that I don't need.
>
> Is this the right way of thinking?
Don't use pseudo-ruby, just write ruby otherwise we can't tell if
you're making a mistake.
Don't create a variable called permalink, create a method called permalink
class User < ActiveRecord::Base
validates...
def permalink
#Do what you need to create the permalink and return it
end
end
There is no reason to validate the permalink because you're creating
it dynamically. Just validate the presence of name and city so you
have both available to build your permalink
Now whenever you call user.permalink, you'll get what you need.
self.method creates a method on the User object so that you get
User.method instead of user.method (which is called on the instance of
the object)
Andrew Timberlake
http://ramblingsonrails.com
http://www.linkedin.com/in/andrewtimberlake
"I have never let my schooling interfere with my education" - Mark Twain
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