[Catalyst] ActionClass vs. Moose Role?

Tomas Doran bobtfish at bobtfish.net
Fri Aug 28 17:29:44 GMT 2009

On 28 Aug 2009, at 18:25, Bill Moseley wrote:

> I was starting to implement a custom ActionClass (similar to  
> RenderView) and then wondered if it would be better written as a  
> Moose role.

Maybe - depends what you're doing. They're doing different things  
really, and I'd need more details to make a recommendation.

> Is there a reason to use one over another?
> Last I looked, an action is limited to a single ActionClass  
> (although it's easy to deal with that), but depending on how it's  
> done, could apply multiple roles.

Catalyst::Controller::ActionRole gets around this, you can apply many  
roles to your action.

> That is, one way would be to define the end() method in the role and  
> not even have it in the consuming controller class, or another would  
> be to have a end() stub
> in the controller and and then use "before 'end'" in the role.  That  
> way multiple roles could be applied.

Yep, that also totally works.

> Is everything going to be a role at some point? ;)

Not _everything_, but yes - a lot of stuff..


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