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Router::Simple(3pm) User Contributed Perl Documentation Router::Simple(3pm)
NAME
Router::Simple - simple HTTP router
SYNOPSIS
use Router::Simple;
my $router = Router::Simple->new();
$router->connect('/', {controller => 'Root', action => 'show'});
$router->connect('/blog/{year}/{month}', {controller => 'Blog', action => 'monthly'});
my $app = sub {
my $env = shift;
if (my $p = $router->match($env)) {
# $p = { controller => 'Blog', action => 'monthly', ... }
} else {
[404, [], ['not found']];
}
};
DESCRIPTION
Router::Simple is a simple router class.
Its main purpose is to serve as a dispatcher for web applications.
Router::Simple can match against PSGI $env directly, which means it's easy to use with PSGI supporting web frameworks.
HOW TO WRITE A ROUTING RULE
plain string
$router->connect( '/foo', { controller => 'Root', action => 'foo' } );
:name notation
$router->connect( '/wiki/:page', { controller => 'WikiPage', action => 'show' } );
...
$router->match('/wiki/john');
# => {controller => 'WikiPage', action => 'show', page => 'john' }
':name' notation matches qr{([^/]+)}.
'*' notation
$router->connect( '/download/*.*', { controller => 'Download', action => 'file' } );
...
$router->match('/download/path/to/file.xml');
# => {controller => 'Download', action => 'file', splat => ['path/to/file', 'xml'] }
'*' notation matches qr{(.+)}. You will get the captured argument as an array ref for the special key "splat".
'{year}' notation
$router->connect( '/blog/{year}', { controller => 'Blog', action => 'yearly' } );
...
$router->match('/blog/2010');
# => {controller => 'Blog', action => 'yearly', year => 2010 }
'{year}' notation matches qr{([^/]+)}, and it will be captured.
'{year:[0-9]+}' notation
$router->connect( '/blog/{year:[0-9]+}/{month:[0-9]{2}}', { controller => 'Blog', action => 'monthly' } );
...
$router->match('/blog/2010/04');
# => {controller => 'Blog', action => 'monthly', year => 2010, month => '04' }
You can specify regular expressions in named captures.
regexp
$router->connect( qr{/blog/(d+)/([0-9]{2})', { controller => 'Blog', action => 'monthly' } );
...
$router->match('/blog/2010/04');
# => {controller => 'Blog', action => 'monthly', splat => [2010, '04'] }
You can use Perl5's powerful regexp directly, and the captured values are stored in the special key "splat".
METHODS
my $router = Router::Simple->new();
Creates a new instance of Router::Simple.
$router->connect([$name, ] $pattern, \%destination[, \%options])
Adds a new rule to $router.
$router->connect( '/', { controller => 'Root', action => 'index' } );
$router->connect( 'show_entry', '/blog/:id',
{ controller => 'Blog', action => 'show' } );
$router->connect( '/blog/:id', { controller => 'Blog', action => 'show' } );
$router->connect( '/comment', { controller => 'Comment', action => 'new_comment' }, {method => 'POST'} );
"\%destination" will be used by match method.
You can specify some optional things to "\%options". The current version supports 'method', 'host', and 'on_match'.
method
'method' is an ArrayRef[String] or String that matches REQUEST_METHOD in $req.
host
'host' is a String or Regexp that matches HTTP_HOST in $req.
on_match
$r->connect(
'/{controller}/{action}/{id}',
{},
{
on_match => sub {
my($env, $match) = @_;
$match->{referer} = $env->{HTTP_REFERER};
return 1;
}
}
);
A function that evaluates the request. Its signature must be "($environ, $match) => bool". It should return true if the match is
successful or false otherwise. The first arg is $env which is either a PSGI environment or a request path, depending on what you
pass to "match" method; the second is the routing variables that would be returned if the match succeeds.
The function can modify $env (in case it's a reference) and $match in place to affect which variables are returned. This allows a
wide range of transformations.
$router->submapper($path, [\%dest, [\%opt]])
$router->submapper('/entry/', {controller => 'Entry'})
This method is shorthand for creating new instance of Router::Simple::Submapper.
The arguments will be passed to "Router::Simple::SubMapper->new(%args)".
$match = $router->match($env|$path)
Matches a URL against one of the contained routes.
The parameter is either a PSGI $env or a plain string that represents a path.
This method returns a plain hashref that would look like:
{
controller => 'Blog',
action => 'daily',
year => 2010, month => '03', day => '04',
}
It returns undef if no valid match is found.
my ($match, $route) = $router->routematch($env|$path);
Match a URL against against one of the routes contained.
Will return undef if no valid match is found, otherwise a result hashref and a Router::Simple::Route object is returned.
$router->as_string()
Dumps $router as string.
Example output:
home GET /
blog_monthly GET /blog/{year}/{month}
GET /blog/{year:d{1,4}}/{month:d{2}}/{day:dd}
POST /comment
GET /
AUTHOR
Tokuhiro Matsuno <tokuhirom AAJKLFJEF GMAIL COM>
THANKS TO
Tatsuhiko Miyagawa
Shawn M Moore
routes.py <http://routes.groovie.org/>.
SEE ALSO
Router::Simple is inspired by routes.py <http://routes.groovie.org/>.
Path::Dispatcher is similar, but so complex.
Path::Router is heavy. It depends on Moose.
HTTP::Router has many deps. It is not well documented.
HTTPx::Dispatcher is my old one. It does not provide an OOish interface.
THANKS TO
DeNA
LICENSE
Copyright (C) Tokuhiro Matsuno
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2011-05-15 Router::Simple(3pm)
