Mason::Manual::RequestDispatch - How request paths get mapped to page components
version 2.02
Given the request path
/news/sports/hockey
Mason searches for the following components in order, setting $m->path_info as noted.
/news/sports/hockey.{pm,m} /news/sports/hockey/index.{pm,m} /news/sports/hockey/dhandler.{pm,m} /news/sports/dhandler.{pm,m} # $m->path_info = hockey /news/sports.{pm,m} # $m->path_info = hockey (but see next section) /news/dhandler.{pm,m} # $m->path_info = sports/hockey /news.{pm,m} # $m->path_info = sports/hockey (but see next section) /dhandler.{pm,m} # $m->path_info = news/sports/hockey
The following sections describe these elements in more detail.
The request path is suffixed with ".m" and ".pm" to translate it to a component path.
/news/sports/hockey.{pm,m}
An index matches its exact directory, nothing underneath.
/news/sports/hockey/index.{pm,m}
A dhandler matches its directory as well as anything underneath, setting $m->path_info to the remainder.
$m->path_info
/news/sports/hockey/dhandler.{pm,m} /news/sports/dhandler.{pm,m} # $m->path_info = hockey /news/dhandler.{pm,m} # $m->path_info = sports/hockey /dhandler.{pm,m} # $m->path_info = news/sports/hockey
A component can match an initial part of the URL, setting $m->path_info to the remainder:
/news/sports.{pm,m} # $m->path_info = hockey /news.{pm,m} # $m->path_info = sports/hockey
Since this isn't always desirable behavior, it must be explicitly enabled for the component. Mason will call method allow_path_info on the component class, and will only allow the match if it returns true:
allow_path_info
%% method allow_path_info { 1 }
The default allow_path_info returns false.
allow_path_info is not checked on dhandlers, since the whole point of dhandlers is to match partial paths.
Mason
Jonathan Swartz <swartz@pobox.com>
This software is copyright (c) 2011 by Jonathan Swartz.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
To install Mason, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Mason
CPAN shell
perl -MCPAN -e shell install Mason
For more information on module installation, please visit the detailed CPAN module installation guide.