[cgiapp] Re: Global vars management in templates

[Mark Stosberg <suppressed>]

On 2005-09-13, Wojciech Pietron <suppressed> wrote:
> Hello,
>
> sorry if someone has already mentioned that problem recently. Give me a
> link if it has been already discussed.
>
> There are some variables that I would like to have defined in all templates
> I am going to use, ie. name of the user, url, sysdate etc. 
>
> The question is: what is the simplest/best practice to maintain global template
> variables and not redefine them all after loading a new template? I am
> specially interested in CAP::AnyTemplate environment.

Michael Graham and I sketched out a simple plugin for this, but didn't
publish the final proposed API. Or rather, at one point I did prepare
wiki updates for this, but lost them was too frustrated at the time to
re-write them.

I now use a load_tmpl() call back for this. I would like to create a
simple plugin that does the same thing in the future. 

In my case I'm passing in all the configuration variables and giving
them the prefix "cfg_".

( This may need the 4.04 development release to work properly...I should just go
ahead and declare that stable. ).

sub cgiapp_init {
    $self->add_callback('load_tmpl',\&load_tmpl_callback);
}

sub load_tmpl_callback {
    my $self        = shift;
    my $ht_params   = shift;
    my $tmpl_params = shift;
    my $tmpl_file   = shift;

   my %CFG = $self->cfg;

  # supply global config variables to the templates. Rather than pollute the name space
  # let's prefix them with cfg_.

 my %new_tmpl_params = (
     %prefixed_cfg,
    %$tmpl_params
    );

  for my $key (keys %new_tmpl_params) {
        $tmpl_params->{$key} = $new_tmpl_params{$key};
  }


}





-- 
http://mark.stosberg.com/ 


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