[Catalyst] additional_template_paths in Catalyst::View::TT 0.21

Will Hawes info at whawes.co.uk
Thu Jan 12 11:23:11 CET 2006

A. Pagaltzis wrote:
> * Zbigniew Lukasiak <zzbbyy at gmail.com> [2006-01-11 15:00]:
>> $path_array = $self->include_path( );
>> @$path_array = ( qw/path another_path/ );
> @{ $self->include_path } = qw( path another_path );
> Regards,

Here's a patch to Catalyst::View::TT 0.21 to incorporate the contents of 
this thread in POD.
-------------- next part --------------
--- TT.pm.orig	Wed Jan 11 10:31:40 2006
+++ TT.pm	Thu Jan 12 10:20:29 2006
@@ -169,12 +169,21 @@
-It is sometimes needed to dynamically add additional paths to the
-INCLUDE_PATH variable of the template object. This can be done by setting
-'additional_include_paths' on stash to a referrence to an array with
-additional paths:
+Sometimes it is desirable to modify INCLUDE_PATH for your templates at run time.
+Additional paths can be added to the start of INCLUDE_PATH via the stash as follows:
     $c->stash->{additional_template_paths} = [$c->config->{root} . '/test_include_path'];
+If you need to add paths to the end of INCLUDE_PATH, there is also an include_path() accessor available:
+    push( @{ $c->view('TT')->include_path }, qw/path/ );
+Note that if you use include_path() to add extra paths to INCLUDE_PATH, you MUST check for duplicate paths. Without such checking, the above code will add "path" to INCLUDE_PATH at every request, causing a memory leak.
+A safer approach is to use include_path() to overwrite the array of paths rather than adding to it. This eliminates both the need to perform duplicate checking and the chance of a memory leak:
+    @{ $c->view('TT')->include_path } = qw/path another_path/;

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