I have a controller base class that needs to stash some data per request.
My question is where to put that data (stash would seem best) -- and how to
name it.
This class is an auto-CRUD-like controller base class that does the mundane
work of fetching objects. For example:
package MyApp::Controller::CD;
use parent 'My::Controller::CRUD';
1;
Which then will provided an action that handles "GET /cd/$id" which will
fetch the CD object and place it someplace. For example, I could just put
it in $c->stash->{item}.
Now, controllers can be chained together, so for example I might have a
chain /cd/*/track/*/movement/* which all use the same base class, and where
in the "movement" action I might want to be able to fetch the cd and track
objects fetched when processing the chain. So, $c->stash->{item} isn't such
a good name.
One option might be for the base class to use its class name as a namespace
in the stash. That is, $c->stash->{CD}->{item} and
$c->stash->{Track}->{item};
Another option is to add attributes to the base class so I can then do:
$c->controller( 'CD' )->item and $c->controller( 'Track' )->item; But, I'd
need to be sure and clear those at the start of every request since this is
per-request data, unlike other attributes of the controller instance.
# Run before the root of chain action is run.
before 'base' => sub {
my ( $self, $c ) = @_;
$self->$_ for qw/ clear_item clear_item_id clear_resultset /;
};
Although that depends on the chain running to clear out the previous values.
So, the stash is probably safer.
Of course, could still add methods of the same name $c->controller( 'CD'
)->item that is a wrapper for saving to or reading from the stash, although
that means $c would have to be available to the Controller.
So, where should this per-request data get saved, and what do you recommend
for naming?
BTW -- Catalyst::Component::ACCEPT_CONTEXT says "Make the current Catalyst
request context available in *Models and Views*". Any reason not to use
this for Controllers?
--
Bill Moseley
mose...@hank.org
_______________________________________________
List: Catalyst@lists.scsys.co.uk
Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
Dev site: http://dev.catalyst.perl.org/
