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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)
