[Catalyst] Catalyst action attributes

Toby Corkindale toby.corkindale at strategicdata.com.au
Tue Jul 14 06:46:30 GMT 2009

Tomas Doran wrote:
> On 13 Jul 2009, at 07:50, Toby Corkindale wrote:
>> Devin Austin wrote:
>>> Check this out: 
>>> http://search.cpan.org/~hkclark/Catalyst-Manual-5.8000/lib/Catalyst/Manual/ExtendingCatalyst.pod#Attributes 
>>> and 
>>> http://search.cpan.org/~hkclark/Catalyst-Manual-5.8000/lib/Catalyst/Manual/ExtendingCatalyst.pod#Action_classes 
>> Thanks, although I had already read that before posting.
>> As far as I can see, there is no way to pass parameters to the 
>> ActionClass. Have I missed something?
> The action class is passed the attributes when it is constructed in its 
> arguments.
> However - before we get into this, I recommend you write an ActionRole 
> (ala Catalyst::Controller::ActionRole) instead of an action class, as 
> you can use multiple actionroles together (which is not the case with 
> action classes).
> Simple example of some prior art you can steal to get you going:
> http://search.cpan.org/~bobtfish/Catalyst-ActionRole-FindViewByIsa-0.000002/lib/Catalyst/ActionRole/FindViewByIsa.pm 

Thanks, that's great.

So to summarise, the "best practice" way of passing parameters to these 
attribute-handlers is by using more attributes, that you *don't* 
specifically handle, but access via $c->action->attributes->{..}

I think that's right?


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