[Catalyst] Debugging Catalyst with Eclipse

[Richard Thomas]

On 24/01/2008, at 3:49 AM, Nathan Waddell wrote:

> One thing that I can't seem to find (and maybe I don't know where to
> look) is an intermediate overview of how to use the stash in
> coordination with templating systems. For example, I know that I can:
>
> Example TT template:
> <h1>A very basic template.</h1>
> <p>Here's the variable you passed to this page: [% foo %]
>
> Example catalyst snippet:
> my $foo = "bar";
> $c->stash->{'foo'} = $foo;
>
> So the resulting template will print the following html:
> <h1>A very basic template.</h1>
> <p>Here's the variable you passed to this page: bar</p>
>
> However, the template toolkit also allows for hashes to be passed  
> to it, like:
> my $foo = ( bar => 'Foobar');
>
> Which can then be accessed as [% foo.bar %] - if I'm understanding  
> it correctly.
>
> How do you pass this hash to catalyst? By deriving a reference?
>
> i.e.
> my $foo_ref = \%foo;
> $c->stash->{'foo'}= $foo_ref;
>
> If this is so, do you have to worry about dereferencing {foo} if you
> need to check its value in the stash with another Catalyst controller?
>
> i.e.
> my $foobar_ref = $c->stash->{'foo'};
> my $foobar = %{$foobar_ref};
>
> Nathan
>

Unless I misunderstand your question (and that's certainly not beyond  
the realms of possibility...), you should be able to simplify this with:
my $foo = { bar => 'Foobar', ... };
$c->stash->{foo} = $foo;

The template will correctly interpret [ % foo.bar %]

and there should be no reason another controller/action that gets  
forwarded to can't retrieve $c->stash->{foo}->{bar}

However, if what you're after is sending the hash back from the  
template to the controller (via some href action), then you can  
return the hash contents as named parameters:
[% href = c.uri_for($something, foo), which will become a link like / 
something?bar=Foobar etc. If that's not what you want, I'd be  
inclined to put the hash into session data, since it sounds like  
you're trying to persist it, which is what the session is for.

Hope that's some help.

cheers
RET
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