If you only want to do this on a single model, you could forget the behaviour. 
Just do something like this in your Campaign model:

function beforeSave() {
        $this->data['Campaign']['slug'] = 
Inflector::slug($data['User']['first_name'] . ' ' . $data['User']['last_name']);
}

That's obviously a very slim piece of (untested) code that isn't doing any 
checks and assumes that you have populated the $data['User'] array key, but it 
ought to work with a bit of tweaking.

Jeremy Burns
Class Outfit

[email protected]
(t) +44 (0) 208 123 3822
(m) +44 (0) 7973 481949
Skype: jeremy_burns
http://www.classoutfit.com

On 19 Apr 2011, at 12:31, barricades wrote:

> Hey Jeremy, thanks for the advice. I'm a little bit new to all this
> though. I have looked through the code before I posted but I'm
> buggered if I can figure out exactly whats happening in there. I don't
> suppose you (or anyone else who feels like chipping in) could give a
> little more detail
> 
> 
> 
> On Apr 19, 12:19 pm, Jeremy Burns | Class Outfit
> <[email protected]> wrote:
>> There is nothing magic about the sluggable behaviour; it just populates the 
>> slug field of the $this->data array on beforeSave() using Inflector. You 
>> could write your own version. I have made some amendments to it myself for a 
>> particular scenario - just step through the code and you'll see it's fairly 
>> intuitive.
>> 
>> Jeremy Burns
>> Class Outfit
>> 
>> [email protected]http://www.classoutfit.com
>> 
>> On 19 Apr 2011, at 12:14, barricades wrote:
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>>> I have a Campaign model and I want to create a slug for each new
>>> campaign. I can do this easily with sluggable behaviour which is
>>> awesome but I'd like the slug to be created from the first_name and
>>> last_name field in the users table.
>> 
>>> How can I do this? I've seen it asked a couple of times online but
>>> never answered. Surely it's possible!?!
>> 
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