use Catalyst::Response;
use Catalyst::Utils;
use NEXT;
-use Text::ASCIITable;
+use Text::SimpleTable;
use Path::Class;
use Time::HiRes qw/gettimeofday tv_interval/;
use URI;
use Scalar::Util qw/weaken/;
+use attributes;
-__PACKAGE__->mk_accessors(qw/counter depth request response state/);
+__PACKAGE__->mk_accessors(
+ qw/counter request response state action stack namespace/
+);
+
+attributes->import( __PACKAGE__, \&namespace, 'lvalue' );
+
+sub depth { scalar @{ shift->stack || [] }; }
# Laziness++
*comp = \&component;
require Module::Pluggable::Fast;
# Helper script generation
-our $CATALYST_SCRIPT_GEN = 6;
+our $CATALYST_SCRIPT_GEN = 11;
__PACKAGE__->mk_classdata($_)
- for qw/components arguments dispatcher engine log/;
+ for qw/components arguments dispatcher engine log dispatcher_class
+ engine_class context_class request_class response_class/;
-our $VERSION = '5.49_01';
+__PACKAGE__->dispatcher_class('Catalyst::Dispatcher');
+__PACKAGE__->engine_class('Catalyst::Engine::CGI');
+__PACKAGE__->request_class('Catalyst::Request');
+__PACKAGE__->response_class('Catalyst::Response');
+
+our $VERSION = '5.5';
sub import {
my ( $class, @arguments ) = @_;
# use the helper to start a new application
catalyst.pl MyApp
- cd MyApp
# add models, views, controllers
- script/myapp_create.pl model Something
- script/myapp_create.pl view Stuff
- script/myapp_create.pl controller Yada
+ script/myapp_create.pl model Database DBIC dbi:SQLite:/path/to/db
+ script/myapp_create.pl view TT TT
+ script/myapp_create.pl controller Search
- # built in testserver
+ # built in testserver -- use -r to restart automatically on changes
script/myapp_server.pl
- # command line interface
+ # command line testing interface
script/myapp_test.pl /yada
+ ### in MyApp.pm
+ use Catalyst qw/-Debug/; # include plugins here as well
+
+ sub foo : Global { # called for /foo, /foo/1, /foo/1/2, etc.
+ my ( $self, $c, @args ) = @_; # args are qw/1 2/ for /foo/1/2
+ $c->stash->{template} = 'foo.tt'; # set the template
+ # lookup something from db -- stash vars are passed to TT
+ $c->stash->{data} =
+ MyApp::Model::Database::Foo->search( { country => $args[0] } );
+ if ( $c->req->params->{bar} ) { # access GET or POST parameters
+ $c->forward( 'bar' ); # process another action
+ # do something else after forward returns
+ }
+ }
+
+ # The foo.tt TT template can use the stash data from the database
+ [% WHILE (item = data.next) %]
+ [% item.foo %]
+ [% END %]
+
+ # called for /bar/of/soap, /bar/of/soap/10, etc.
+ sub bar : Path('/bar/of/soap') { ... }
- use Catalyst;
-
- use Catalyst qw/My::Module My::OtherModule/;
-
- use Catalyst '-Debug';
-
- use Catalyst qw/-Debug -Engine=CGI/;
-
- sub default : Private { $_[1]->res->output('Hello') } );
-
- sub index : Path('/index.html') {
+ # called for all actions, from the top-most controller downwards
+ sub auto : Private {
my ( $self, $c ) = @_;
- $c->res->output('Hello');
- $c->forward('foo');
+ if ( !$c->user ) {
+ $c->res->redirect( '/login' ); # require login
+ return 0; # abort request and go immediately to end()
+ }
+ return 1; # success; carry on to next action
+ }
+
+ # called after all actions are finished
+ sub end : Private {
+ my ( $self, $c ) = @_;
+ if ( scalar @{ $c->error } ) { ... } # handle errors
+ return if $c->res->body; # already have a response
+ $c->forward( 'MyApp::View::TT' ); # render template
}
- sub product : Regex('^product[_]*(\d*).html$') {
+ ### in MyApp/Controller/Foo.pm
+ # called for /foo/bar
+ sub bar : Local { ... }
+
+ # called for /blargle
+ sub blargle : Global { ... }
+
+ # an index action matches /foo, but not /foo/1, etc.
+ sub index : Private { ... }
+
+ ### in MyApp/Controller/Foo/Bar.pm
+ # called for /foo/bar/baz
+ sub baz : Local { ... }
+
+ # first MyApp auto is called, then Foo auto, then this
+ sub auto : Private { ... }
+
+ # powerful regular expression paths are also possible
+ sub details : Regex('^product/(\w+)/details$') {
my ( $self, $c ) = @_;
- $c->stash->{template} = 'product.tt';
- $c->stash->{product} = $c->req->snippets->[0];
+ # extract the (\w+) from the URI
+ my $product = $c->req->snippets->[0];
}
-See also L<Catalyst::Manual::Intro>
+See L<Catalyst::Manual::Intro> for additional information.
=head1 DESCRIPTION
See L<Catalyst::Manual> for more documentation.
-Catalyst plugins can be loaded by naming them as arguments to the "use Catalyst" statement.
-Omit the C<Catalyst::Plugin::> prefix from the plugin name,
-so C<Catalyst::Plugin::My::Module> becomes C<My::Module>.
+Catalyst plugins can be loaded by naming them as arguments to the "use
+Catalyst" statement. Omit the C<Catalyst::Plugin::> prefix from the
+plugin name, i.e., C<Catalyst::Plugin::My::Module> becomes
+C<My::Module>.
- use Catalyst 'My::Module';
+ use Catalyst qw/My::Module/;
-Special flags like -Debug and -Engine can also be specified as arguments when
-Catalyst is loaded:
+Special flags like C<-Debug> and C<-Engine> can also be specified as
+arguments when Catalyst is loaded:
use Catalyst qw/-Debug My::Module/;
-The position of plugins and flags in the chain is important, because they are
-loaded in exactly the order that they appear.
+The position of plugins and flags in the chain is important, because
+they are loaded in exactly the order in which they appear.
The following flags are supported:
=item -Debug
-enables debug output, i.e.:
+Enables debug output.
- use Catalyst '-Debug';
+=item -Engine
-this is equivalent to:
+Forces Catalyst to use a specific engine. Omit the
+C<Catalyst::Engine::> prefix of the engine name, i.e.:
- use Catalyst;
- sub debug { 1 }
+ use Catalyst qw/-Engine=CGI/;
-=item -Dispatcher
+=item -Home
-Force Catalyst to use a specific dispatcher.
+Forces Catalyst to use a specific home directory, e.g.:
-=item -Engine
+ use Catalyst qw[-Home=/usr/sri];
-Force Catalyst to use a specific engine.
-Omit the C<Catalyst::Engine::> prefix of the engine name, i.e.:
+=item -Log
- use Catalyst '-Engine=CGI';
+Specifies log level.
-=item -Home
+=back
-Force Catalyst to use a specific home directory.
+=head1 METHODS
-=item -Log
+=head2 Information about the current request
+
+=over 4
-Specify log level.
+=item $c->action
+
+Returns a L<Catalyst::Action> object for the current action, which
+stringifies to the action name. See L<Catalyst::Action>.
+
+=item $c->namespace
+
+Returns the namespace of the current action, i.e., the uri prefix
+corresponding to the controller of the current action. For example:
+
+ # in Controller::Foo::Bar
+ $c->namespace; # returns 'foo/bar';
+
+=item $c->request
+
+=item $c->req
+
+Returns the current L<Catalyst::Request> object. See
+L<Catalyst::Request>.
=back
-=head1 METHODS
+=head2 Processing and response to the current request
+
+=over 4
+
+=item $c->forward( $action [, \@arguments ] )
+
+=item $c->forward( $class, $method, [, \@arguments ] )
+
+Forwards processing to a private action. If you give a class name but no
+method, C<process()> is called. You may also optionally pass arguments
+in an arrayref. The action will receive the arguments in C<@_> and
+C<$c-E<gt>req-E<gt>args>. Upon returning from the function,
+C<$c-E<gt>req-E<gt>args> will be restored to the previous values.
+
+ $c->forward('/foo');
+ $c->forward('index');
+ $c->forward(qw/MyApp::Model::CDBI::Foo do_stuff/);
+ $c->forward('MyApp::View::TT');
+
+=cut
+
+sub forward { my $c = shift; $c->dispatcher->forward( $c, @_ ) }
+
+=item $c->detach( $action [, \@arguments ] )
+
+=item $c->detach( $class, $method, [, \@arguments ] )
+
+The same as C<forward>, but doesn't return.
+
+=cut
+
+sub detach { my $c = shift; $c->dispatcher->detach( $c, @_ ) }
+
+=item $c->error
+
+=item $c->error($error, ...)
+
+=item $c->error($arrayref)
+
+Returns an arrayref containing error messages.
+
+ my @error = @{ $c->error };
+
+Add a new error.
+
+ $c->error('Something bad happened');
+
+Clear errors.
+
+ $c->error(0);
+
+=cut
+
+sub error {
+ my $c = shift;
+ if ( $_[0] ) {
+ my $error = ref $_[0] eq 'ARRAY' ? $_[0] : [@_];
+ push @{ $c->{error} }, @$error;
+ }
+ elsif ( defined $_[0] ) { $c->{error} = undef }
+ return $c->{error} || [];
+}
+
+=item $c->response
+
+=item $c->res
+
+Returns the current L<Catalyst::Response> object.
+
+=item $c->stash
+
+Returns a hashref to the stash, which may be used to store data and pass
+it between components during a request. You can also set hash keys by
+passing arguments. The stash is automatically sent to the view. The
+stash is cleared at the end of a request; it cannot be used for
+persistent storage.
+
+ $c->stash->{foo} = $bar;
+ $c->stash( { moose => 'majestic', qux => 0 } );
+ $c->stash( bar => 1, gorch => 2 ); # equivalent to passing a hashref
+
+ # stash is automatically passed to the view for use in a template
+ $c->forward( 'MyApp::V::TT' );
+
+=cut
+
+sub stash {
+ my $c = shift;
+ if (@_) {
+ my $stash = @_ > 1 ? {@_} : $_[0];
+ while ( my ( $key, $val ) = each %$stash ) {
+ $c->{stash}->{$key} = $val;
+ }
+ }
+ return $c->{stash};
+}
+
+=item $c->state
+
+Contains the return value of the last executed action.
+
+=back
+
+=head2 Component Accessors
=over 4
=item $c->component($name)
-Get a component object by name.
-
- $c->comp('MyApp::Model::MyModel')->do_stuff;
+Gets a component object by name. This method is no longer recommended,
+unless you want to get a specific component by full
+class. C<$c-E<gt>controller>, C<$c-E<gt>model>, and C<$c-E<gt>view>
+should be used instead.
=cut
my @names = (
$name, "${appclass}::${name}",
- map { "${appclass}::${_}::${name}" } qw/M V C/
+ map { "${appclass}::${_}::${name}" }
+ qw/Model M Controller C View V/
);
foreach my $try (@names) {
return sort keys %{ $c->components };
}
-=item config
+=item $c->controller($name)
+
+Gets a L<Catalyst::Controller> instance by name.
-Returns a hashref containing your applications settings.
+ $c->controller('Foo')->do_stuff;
-=item debug
+=cut
+
+sub controller {
+ my ( $c, $name ) = @_;
+ my $controller = $c->comp("Controller::$name");
+ return $controller if $controller;
+ return $c->comp("C::$name");
+}
-Overload to enable debug messages.
+=item $c->model($name)
+
+Gets a L<Catalyst::Model> instance by name.
+
+ $c->model('Foo')->do_stuff;
=cut
-sub debug { 0 }
+sub model {
+ my ( $c, $name ) = @_;
+ my $model = $c->comp("Model::$name");
+ return $model if $model;
+ return $c->comp("M::$name");
+}
+
+=item $c->view($name)
-=item $c->detach( $command [, \@arguments ] )
+Gets a L<Catalyst::View> instance by name.
-Like C<forward> but doesn't return.
+ $c->view('Foo')->do_stuff;
=cut
-sub detach { my $c = shift; $c->dispatcher->detach( $c, @_ ) }
+sub view {
+ my ( $c, $name ) = @_;
+ my $view = $c->comp("View::$name");
+ return $view if $view;
+ return $c->comp("V::$name");
+}
+
+=back
+
+=head2 Class data and helper classes
+
+=over 4
+
+=item $c->config
+
+Returns or takes a hashref containing the application's configuration.
+
+ __PACKAGE__->config({ db => 'dsn:SQLite:foo.db' });
+
+=item $c->debug
+
+Overload to enable debug messages (same as -Debug option).
+
+=cut
+
+sub debug { 0 }
=item $c->dispatcher
-Contains the dispatcher instance.
-Stringifies to class.
+Returns the dispatcher instance. Stringifies to class name. See
+L<Catalyst::Dispatcher>.
+
+=item $c->engine
-=item $c->forward( $command [, \@arguments ] )
+Returns the engine instance. Stringifies to the class name. See
+L<Catalyst::Engine>.
-Forward processing to a private action or a method from a class.
-If you define a class without method it will default to process().
-also takes an optional arrayref containing arguments to be passed
-to the new function. $c->req->args will be reset upon returning
-from the function.
+=item $c->log
- $c->forward('/foo');
- $c->forward('index');
- $c->forward(qw/MyApp::Model::CDBI::Foo do_stuff/);
- $c->forward('MyApp::View::TT');
+Returns the logging object instance. Unless it is already set, Catalyst
+sets this up with a L<Catalyst::Log> object. To use your own log class:
+
+ $c->log( MyLogger->new );
+ $c->log->info( 'Now logging with my own logger!' );
+
+Your log class should implement the methods described in the
+L<Catalyst::Log> man page.
=cut
-sub forward { my $c = shift; $c->dispatcher->forward( $c, @_ ) }
+=back
+
+=head2 Utility methods
+
+=over 4
+
+=item $c->path_to(@path)
+
+Merges C<@path> with C<$c-E<gt>config-E<gt>{home}> and returns a
+L<Path::Class> object.
+
+For example:
+
+ $c->path_to( 'db', 'sqlite.db' );
+
+=cut
+
+sub path_to {
+ my ( $c, @path ) = @_;
+ my $path = dir( $c->config->{home}, @path );
+ if ( -d $path ) { return $path }
+ else { return file( $c->config->{home}, @path ) }
+}
+
+=item $c->plugin( $name, $class, @args )
+
+Helper method for plugins. It creates a classdata accessor/mutator and
+loads and instantiates the given class.
+
+ MyApp->plugin( 'prototype', 'HTML::Prototype' );
+
+ $c->prototype->define_javascript_functions;
+
+=cut
+
+sub plugin {
+ my ( $class, $name, $plugin, @args ) = @_;
+ $plugin->require;
+
+ if ( my $error = $UNIVERSAL::require::ERROR ) {
+ Catalyst::Exception->throw(
+ message => qq/Couldn't load instant plugin "$plugin", "$error"/ );
+ }
+
+ eval { $plugin->import };
+ $class->mk_classdata($name);
+ my $obj;
+ eval { $obj = $plugin->new(@args) };
+
+ if ($@) {
+ Catalyst::Exception->throw( message =>
+ qq/Couldn't instantiate instant plugin "$plugin", "$@"/ );
+ }
+
+ $class->$name($obj);
+ $class->log->debug(qq/Initialized instant plugin "$plugin" as "$name"/)
+ if $class->debug;
+}
-=item $c->setup
+=item MyApp->setup
-Setup.
+Initializes the dispatcher and engine, loads any plugins, and loads the
+model, view, and controller components. You may also specify an array
+of plugins to load here, if you choose to not load them in the C<use
+Catalyst> line.
- $c->setup;
+ MyApp->setup;
+ MyApp->setup( qw/-Debug/ );
=cut
}
}
- $class->log->warn( "You are running an old helper script! "
- . "Please update your scripts by regenerating the "
- . "application and copying over the new scripts." )
- if ( $ENV{CATALYST_SCRIPT_GEN}
- && ( $ENV{CATALYST_SCRIPT_GEN} < $Catalyst::CATALYST_SCRIPT_GEN ) );
+ $class->log->warn(
+ <<"EOF") if ( $ENV{CATALYST_SCRIPT_GEN} && ( $ENV{CATALYST_SCRIPT_GEN} < $Catalyst::CATALYST_SCRIPT_GEN ) );
+You are running an old script!
+
+ Please update by running:
+ catalyst.pl -nonew -scripts $class
+EOF
if ( $class->debug ) {
}
if (@plugins) {
- my $t = Text::ASCIITable->new;
- $t->setOptions( 'hide_HeadRow', 1 );
- $t->setOptions( 'hide_HeadLine', 1 );
- $t->setCols('Class');
- $t->setColWidth( 'Class', 75, 1 );
- $t->addRow($_) for @plugins;
+ my $t = Text::SimpleTable->new(76);
+ $t->row($_) for @plugins;
$class->log->debug( "Loaded plugins:\n" . $t->draw );
}
$class->setup_components;
if ( $class->debug ) {
- my $t = Text::ASCIITable->new;
- $t->setOptions( 'hide_HeadRow', 1 );
- $t->setOptions( 'hide_HeadLine', 1 );
- $t->setCols('Class');
- $t->setColWidth( 'Class', 75, 1 );
- $t->addRow($_) for sort keys %{ $class->components };
+ my $t = Text::SimpleTable->new( [ 65, 'Class' ], [ 8, 'Type' ] );
+ for my $comp ( sort keys %{ $class->components } ) {
+ my $type = ref $class->components->{$comp} ? 'instance' : 'class';
+ $t->row( $comp, $type );
+ }
$class->log->debug( "Loaded components:\n" . $t->draw )
- if ( @{ $t->{tbl_rows} } );
+ if ( keys %{ $class->components } );
}
# Add our self to components, since we are also a component
$class->log->_flush() if $class->log->can('_flush');
}
-=item $c->uri_for($path)
+=item $c->uri_for( $path, [ @args ] )
-Merges path with $c->request->base for absolute uri's and with
-$c->request->match for relative uri's, then returns a normalized
-L<URI> object.
+Merges path with C<$c-E<gt>request-E<gt>base> for absolute uri's and
+with C<$c-E<gt>request-E<gt>match> for relative uri's, then returns a
+normalized L<URI> object. If any args are passed, they are added at the
+end of the path.
=cut
sub uri_for {
- my ( $c, $path ) = @_;
+ my ( $c, $path, @args ) = @_;
my $base = $c->request->base->clone;
my $basepath = $base->path;
$basepath =~ s/\/$//;
$basepath .= '/';
my $match = $c->request->match;
+
+ # massage match, empty if absolute path
$match =~ s/^\///;
$match .= '/' if $match;
+ $path ||= '';
$match = '' if $path =~ /^\//;
$path =~ s/^\///;
- return URI->new_abs( URI->new_abs( $path, "$basepath$match" ), $base )
- ->canonical;
-}
-=item $c->error
-
-=item $c->error($error, ...)
-
-=item $c->error($arrayref)
-
-Returns an arrayref containing error messages.
-
- my @error = @{ $c->error };
-
-Add a new error.
-
- $c->error('Something bad happened');
-
-=cut
-
-sub error {
- my $c = shift;
- my $error = ref $_[0] eq 'ARRAY' ? $_[0] : [@_];
- push @{ $c->{error} }, @$error;
- return $c->{error};
+ # join args with '/', or a blank string
+ my $args = ( scalar @args ? '/' . join( '/', @args ) : '' );
+ return URI->new_abs( URI->new_abs( "$path$args", "$basepath$match" ),
+ $base )->canonical;
}
-=item $c->engine
-
-Contains the engine instance.
-Stringifies to the class.
-
-=item $c->log
-
-Contains the logging object. Unless it is already set Catalyst sets this up with a
-C<Catalyst::Log> object. To use your own log class:
-
- $c->log( MyLogger->new );
- $c->log->info("now logging with my own logger!");
-
-Your log class should implement the methods described in the C<Catalyst::Log>
-man page.
-
-=item $c->plugin( $name, $class, @args )
+=item $c->welcome_message
-Instant plugins for Catalyst.
-Classdata accessor/mutator will be created, class loaded and instantiated.
-
- MyApp->plugin( 'prototype', 'HTML::Prototype' );
-
- $c->prototype->define_javascript_functions;
+Returns the Catalyst welcome HTML page.
=cut
-sub plugin {
- my ( $class, $name, $plugin, @args ) = @_;
- $plugin->require;
-
- if ( my $error = $UNIVERSAL::require::ERROR ) {
- Catalyst::Exception->throw(
- message => qq/Couldn't load instant plugin "$plugin", "$error"/ );
- }
-
- eval { $plugin->import };
- $class->mk_classdata($name);
- my $obj;
- eval { $obj = $plugin->new(@args) };
-
- if ($@) {
- Catalyst::Exception->throw( message =>
- qq/Couldn't instantiate instant plugin "$plugin", "$@"/ );
- }
-
- $class->$name($obj);
- $class->log->debug(qq/Initialized instant plugin "$plugin" as "$name"/)
- if $class->debug;
-}
-
-=item $c->request
-
-=item $c->req
-
-Returns a C<Catalyst::Request> object.
-
- my $req = $c->req;
-
-=item $c->response
-
-=item $c->res
-
-Returns a C<Catalyst::Response> object.
-
- my $res = $c->res;
-
-=item $c->state
-
-Contains the return value of the last executed action.
-
-=item $c->stash
-
-Returns a hashref containing all your data.
-
- $c->stash->{foo} ||= 'yada';
- print $c->stash->{foo};
-
-=cut
-
-sub stash {
- my $c = shift;
- if (@_) {
- my $stash = @_ > 1 ? {@_} : $_[0];
- while ( my ( $key, $val ) = each %$stash ) {
- $c->{stash}->{$key} = $val;
- }
- }
- return $c->{stash};
+sub welcome_message {
+ my $c = shift;
+ my $name = $c->config->{name};
+ my $logo = $c->uri_for('/static/images/catalyst_logo.png');
+ my $prefix = Catalyst::Utils::appprefix( ref $c );
+ $c->response->content_type('text/html; charset=utf-8');
+ return <<"EOF";
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+ <head>
+ <meta http-equiv="Content-Language" content="en" />
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+ <title>$name on Catalyst $VERSION</title>
+ <style type="text/css">
+ body {
+ color: #000;
+ background-color: #eee;
+ }
+ div#content {
+ width: 640px;
+ margin-left: auto;
+ margin-right: auto;
+ margin-top: 10px;
+ margin-bottom: 10px;
+ text-align: left;
+ background-color: #ccc;
+ border: 1px solid #aaa;
+ -moz-border-radius: 10px;
+ }
+ p, h1, h2 {
+ margin-left: 20px;
+ margin-right: 20px;
+ font-family: verdana, tahoma, sans-serif;
+ }
+ a {
+ font-family: verdana, tahoma, sans-serif;
+ }
+ :link, :visited {
+ text-decoration: none;
+ color: #b00;
+ border-bottom: 1px dotted #bbb;
+ }
+ :link:hover, :visited:hover {
+ color: #555;
+ }
+ div#topbar {
+ margin: 0px;
+ }
+ pre {
+ margin: 10px;
+ padding: 8px;
+ }
+ div#answers {
+ padding: 8px;
+ margin: 10px;
+ background-color: #fff;
+ border: 1px solid #aaa;
+ -moz-border-radius: 10px;
+ }
+ h1 {
+ font-size: 0.9em;
+ font-weight: normal;
+ text-align: center;
+ }
+ h2 {
+ font-size: 1.0em;
+ }
+ p {
+ font-size: 0.9em;
+ }
+ p img {
+ float: right;
+ margin-left: 10px;
+ }
+ span#appname {
+ font-weight: bold;
+ font-size: 1.6em;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="content">
+ <div id="topbar">
+ <h1><span id="appname">$name</span> on <a href="http://catalyst.perl.org">Catalyst</a>
+ $VERSION</h1>
+ </div>
+ <div id="answers">
+ <p>
+ <img src="$logo" alt="Catalyst Logo" />
+ </p>
+ <p>Welcome to the wonderful world of Catalyst.
+ This <a href="http://en.wikipedia.org/wiki/MVC">MVC</a>
+ framework will make web development something you had
+ never expected it to be: Fun, rewarding and quick.</p>
+ <h2>What to do now?</h2>
+ <p>That really depends on what <b>you</b> want to do.
+ We do, however, provide you with a few starting points.</p>
+ <p>If you want to jump right into web development with Catalyst
+ you might want to check out the documentation.</p>
+ <pre><code>perldoc <a href="http://cpansearch.perl.org/dist/Catalyst/lib/Catalyst/Manual/Intro.pod">Catalyst::Manual::Intro</a>
+perldoc <a href="http://cpansearch.perl.org/dist/Catalyst/lib/Catalyst/Manual.pod">Catalyst::Manual</a></code></pre>
+ <h2>What to do next?</h2>
+ <p>Next it's time to write an actual application. Use the
+ helper scripts to generate <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AController%3A%3A&mode=all">controllers</a>,
+ <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AModel%3A%3A&mode=all">models</a> and
+ <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AView%3A%3A&mode=all">views</a>,
+ they can save you a lot of work.</p>
+ <pre><code>script/${prefix}_create.pl -help</code></pre>
+ <p>Also, be sure to check out the vast and growing
+ collection of <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3APlugin%3A%3A&mode=all">plugins for Catalyst on CPAN</a>,
+ you are likely to find what you need there.
+ </p>
+
+ <h2>Need help?</h2>
+ <p>Catalyst has a very active community. Here are the main places to
+ get in touch with us.</p>
+ <ul>
+ <li>
+ <a href="http://dev.catalyst.perl.org">Wiki</a>
+ </li>
+ <li>
+ <a href="http://lists.rawmode.org/mailman/listinfo/catalyst">Mailing-List</a>
+ </li>
+ <li>
+ <a href="irc://irc.perl.org/catalyst">IRC channel #catalyst on irc.perl.org</a>
+ </li>
+ </ul>
+ <h2>In conclusion</h2>
+ <p>The Catalyst team hopes you will enjoy using Catalyst as much
+ as we enjoyed making it. Please contact us if you have ideas
+ for improvement or other feedback.</p>
+ </div>
+ </div>
+ </body>
+</html>
+EOF
}
=back
=head1 INTERNAL METHODS
+These methods are not meant to be used by end users.
+
=over 4
-=item $c->benchmark($coderef)
+=item $c->benchmark( $coderef )
Takes a coderef with arguments and returns elapsed time as float.
=item $c->components
-Contains the components.
+Returns a hash of components.
+
+=item $c->context_class
+
+Returns or sets the context class.
=item $c->counter
-Returns a hashref containing coderefs and execution counts.
-(Needed for deep recursion detection)
+Returns a hashref containing coderefs and execution counts (needed for
+deep recursion detection).
=item $c->depth
-Returns the actual forward depth.
+Returns the number of actions on the current internal execution stack.
=item $c->dispatch
-Dispatch request to actions.
+Dispatches a request to actions.
=cut
sub dispatch { my $c = shift; $c->dispatcher->dispatch( $c, @_ ) }
-=item $c->execute($class, $coderef)
+=item $c->dispatcher_class
+
+Returns or sets the dispatcher class.
-Execute a coderef in given class and catch exceptions.
-Errors are available via $c->error.
+=item $c->dump_these
+
+Returns a list of 2-element array references (name, structure) pairs
+that will be dumped on the error page in debug mode.
+
+=cut
+
+sub dump_these {
+ my $c = shift;
+ [ Request => $c->req ], [ Response => $c->res ], [ Stash => $c->stash ],;
+}
+
+=item $c->engine_class
+
+Returns or sets the engine class.
+
+=item $c->execute( $class, $coderef )
+
+Execute a coderef in given class and catch exceptions. Errors are available
+via $c->error.
=cut
my ( $c, $class, $code ) = @_;
$class = $c->components->{$class} || $class;
$c->state(0);
- my $callsub = ( caller(1) )[3];
+
+ my $callsub =
+ ( caller(0) )[0]->isa('Catalyst::Action')
+ ? ( caller(2) )[3]
+ : ( caller(1) )[3];
my $action = '';
if ( $c->debug ) {
$action = "-> $action" if $callsub =~ /forward$/;
}
- $c->{depth}++;
+ push( @{ $c->stack }, $code );
eval {
if ( $c->debug )
{
my ( $elapsed, @state ) =
$c->benchmark( $code, $class, $c, @{ $c->req->args } );
- push @{ $c->{stats} }, [ $action, sprintf( '%fs', $elapsed ) ];
+ unless ( ( $code->name =~ /^_.*/ )
+ && ( !$c->config->{show_internal_actions} ) )
+ {
+ push @{ $c->{stats} }, [ $action, sprintf( '%fs', $elapsed ) ];
+ }
$c->state(@state);
}
- else { $c->state( &$code( $class, $c, @{ $c->req->args } ) || 0 ) }
+ else {
+ $c->state( &$code( $class, $c, @{ $c->req->args } ) || 0 );
+ }
};
- $c->{depth}--;
+ pop( @{ $c->stack } );
if ( my $error = $@ ) {
- if ( $error eq $DETACH ) { die $DETACH if $c->{depth} > 1 }
+ if ( $error eq $DETACH ) { die $DETACH if $c->depth > 1 }
else {
unless ( ref $error ) {
chomp $error;
$error = qq/Caught exception "$error"/;
}
-
- $c->log->error($error);
$c->error($error);
$c->state(0);
}
=item $c->finalize
-Finalize request.
+Finalizes the request.
=cut
sub finalize {
my $c = shift;
+ for my $error ( @{ $c->error } ) {
+ $c->log->error($error);
+ }
+
$c->finalize_uploads;
# Error
=item $c->finalize_body
-Finalize body.
+Finalizes body.
=cut
=item $c->finalize_cookies
-Finalize cookies.
+Finalizes cookies.
=cut
=item $c->finalize_error
-Finalize error.
+Finalizes error.
=cut
=item $c->finalize_headers
-Finalize headers.
+Finalizes headers.
=cut
=item $c->finalize_read
-Finalize the input after reading is complete.
+Finalizes the input after reading is complete.
=cut
=item $c->finalize_uploads
-Finalize uploads. Cleans up any temporary files.
+Finalizes uploads. Cleans up any temporary files.
=cut
sub finalize_uploads { my $c = shift; $c->engine->finalize_uploads( $c, @_ ) }
-=item $c->get_action( $action, $namespace, $inherit )
+=item $c->get_action( $action, $namespace )
+
+Gets an action in a given namespace.
+
+=cut
+
+sub get_action { my $c = shift; $c->dispatcher->get_action(@_) }
+
+=item $c->get_actions( $action, $namespace )
-Get an action in a given namespace.
+Gets all actions of a given name in a namespace and all parent
+namespaces.
=cut
-sub get_action { my $c = shift; $c->dispatcher->get_action( $c, @_ ) }
+sub get_actions { my $c = shift; $c->dispatcher->get_actions( $c, @_ ) }
=item handle_request( $class, @arguments )
-Handles the request.
+Called to handle each HTTP request.
=cut
$elapsed = sprintf '%f', $elapsed;
my $av = sprintf '%.3f',
( $elapsed == 0 ? '??' : ( 1 / $elapsed ) );
- my $t = Text::ASCIITable->new;
- $t->setCols( 'Action', 'Time' );
- $t->setColWidth( 'Action', 64, 1 );
- $t->setColWidth( 'Time', 9, 1 );
+ my $t = Text::SimpleTable->new( [ 64, 'Action' ], [ 9, 'Time' ] );
- for my $stat (@stats) { $t->addRow( $stat->[0], $stat->[1] ) }
+ for my $stat (@stats) { $t->row( $stat->[0], $stat->[1] ) }
$class->log->info(
"Request took ${elapsed}s ($av/s)\n" . $t->draw );
}
return $status;
}
-=item $c->prepare(@arguments)
+=item $c->prepare( @arguments )
-Turns the engine-specific request( Apache, CGI ... )
-into a Catalyst context .
+Creates a Catalyst context from an engine-specific request (Apache, CGI,
+etc.).
=cut
sub prepare {
my ( $class, @arguments ) = @_;
- my $c = bless {
- counter => {},
- depth => 0,
- request => Catalyst::Request->new(
- {
- arguments => [],
- body_parameters => {},
- cookies => {},
- handle => \*STDIN,
- headers => HTTP::Headers->new,
- parameters => {},
- query_parameters => {},
- secure => 0,
- snippets => [],
- uploads => {}
- }
- ),
- response => Catalyst::Response->new(
- {
- body => '',
- cookies => {},
- handle => \*STDOUT,
- headers => HTTP::Headers->new(),
- status => 200
- }
- ),
- stash => {},
- state => 0
- }, $class;
+ $class->context_class( ref $class || $class ) unless $class->context_class;
+ my $c = $class->context_class->new(
+ {
+ counter => {},
+ stack => [],
+ request => $class->request_class->new(
+ {
+ arguments => [],
+ body_parameters => {},
+ cookies => {},
+ headers => HTTP::Headers->new,
+ parameters => {},
+ query_parameters => {},
+ secure => 0,
+ snippets => [],
+ uploads => {}
+ }
+ ),
+ response => $class->response_class->new(
+ {
+ body => '',
+ cookies => {},
+ headers => HTTP::Headers->new(),
+ status => 200
+ }
+ ),
+ stash => {},
+ state => 0
+ }
+ );
# For on-demand data
$c->request->{_context} = $c;
# On-demand parsing
$c->prepare_body unless $c->config->{parse_on_demand};
- $c->prepare_action;
my $method = $c->req->method || '';
my $path = $c->req->path || '';
my $address = $c->req->address || '';
- $c->log->debug(qq/"$method" request for "$path" from $address/)
+ $c->log->debug(qq/"$method" request for "$path" from "$address"/)
if $c->debug;
+ $c->prepare_action;
+
return $c;
}
=item $c->prepare_action
-Prepare action.
+Prepares action.
=cut
=item $c->prepare_body
-Prepare message body.
+Prepares message body.
=cut
$c->prepare_uploads;
if ( $c->debug && keys %{ $c->req->body_parameters } ) {
- my $t = Text::ASCIITable->new;
- $t->setCols( 'Key', 'Value' );
- $t->setColWidth( 'Key', 37, 1 );
- $t->setColWidth( 'Value', 36, 1 );
- $t->alignCol( 'Value', 'right' );
+ my $t = Text::SimpleTable->new( [ 37, 'Key' ], [ 36, 'Value' ] );
for my $key ( sort keys %{ $c->req->body_parameters } ) {
my $param = $c->req->body_parameters->{$key};
my $value = defined($param) ? $param : '';
- $t->addRow( $key,
+ $t->row( $key,
ref $value eq 'ARRAY' ? ( join ', ', @$value ) : $value );
}
$c->log->debug( "Body Parameters are:\n" . $t->draw );
=item $c->prepare_body_chunk( $chunk )
-Prepare a chunk of data before sending it to HTTP::Body.
+Prepares a chunk of data before sending it to L<HTTP::Body>.
=cut
-sub prepare_body_chunk {
- my $c = shift;
+sub prepare_body_chunk {
+ my $c = shift;
$c->engine->prepare_body_chunk( $c, @_ );
}
=item $c->prepare_body_parameters
-Prepare body parameters.
+Prepares body parameters.
=cut
=item $c->prepare_connection
-Prepare connection.
+Prepares connection.
=cut
=item $c->prepare_cookies
-Prepare cookies.
+Prepares cookies.
=cut
=item $c->prepare_headers
-Prepare headers.
+Prepares headers.
=cut
=item $c->prepare_parameters
-Prepare parameters.
+Prepares parameters.
=cut
=item $c->prepare_path
-Prepare path and base.
+Prepares path and base.
=cut
=item $c->prepare_query_parameters
-Prepare query parameters.
+Prepares query parameters.
=cut
$c->engine->prepare_query_parameters( $c, @_ );
if ( $c->debug && keys %{ $c->request->query_parameters } ) {
- my $t = Text::ASCIITable->new;
- $t->setCols( 'Key', 'Value' );
- $t->setColWidth( 'Key', 37, 1 );
- $t->setColWidth( 'Value', 36, 1 );
- $t->alignCol( 'Value', 'right' );
+ my $t = Text::SimpleTable->new( [ 37, 'Key' ], [ 36, 'Value' ] );
for my $key ( sort keys %{ $c->req->query_parameters } ) {
my $param = $c->req->query_parameters->{$key};
my $value = defined($param) ? $param : '';
- $t->addRow( $key,
+ $t->row( $key,
ref $value eq 'ARRAY' ? ( join ', ', @$value ) : $value );
}
$c->log->debug( "Query Parameters are:\n" . $t->draw );
=item $c->prepare_read
-Prepare the input for reading.
+Prepares the input for reading.
=cut
=item $c->prepare_request
-Prepare the engine request.
+Prepares the engine request.
=cut
=item $c->prepare_uploads
-Prepare uploads.
+Prepares uploads.
=cut
$c->engine->prepare_uploads( $c, @_ );
if ( $c->debug && keys %{ $c->request->uploads } ) {
- my $t = Text::ASCIITable->new;
- $t->setCols( 'Filename', 'Type', 'Size' );
- $t->setColWidth( 'Filename', 37, 1 );
- $t->setColWidth( 'Type', 24, 1 );
- $t->setColWidth( 'Size', 9, 1 );
- $t->alignCol( 'Size', 'left' );
+ my $t = Text::SimpleTable->new(
+ [ 12, 'Key' ],
+ [ 28, 'Filename' ],
+ [ 18, 'Type' ],
+ [ 9, 'Size' ]
+ );
for my $key ( sort keys %{ $c->request->uploads } ) {
my $upload = $c->request->uploads->{$key};
for my $u ( ref $upload eq 'ARRAY' ? @{$upload} : ($upload) ) {
- $t->addRow( $key, $u->type, $u->size );
+ $t->row( $key, $u->filename, $u->type, $u->size );
}
}
$c->log->debug( "File Uploads are:\n" . $t->draw );
=item $c->prepare_write
-Prepare the output for writing.
+Prepares the output for writing.
=cut
sub prepare_write { my $c = shift; $c->engine->prepare_write( $c, @_ ) }
+=item $c->request_class
+
+Returns or sets the request class.
+
+=item $c->response_class
+
+Returns or sets the response class.
+
=item $c->read( [$maxlength] )
-Read a chunk of data from the request body. This method is designed to be
-used in a while loop, reading $maxlength bytes on every call. $maxlength
-defaults to the size of the request if not specified.
+Reads a chunk of data from the request body. This method is designed to
+be used in a while loop, reading C<$maxlength> bytes on every call.
+C<$maxlength> defaults to the size of the request if not specified.
-You have to set MyApp->config->{parse_on_demand} to use this directly.
+You have to set C<MyApp-E<gt>config-E<gt>{parse_on_demand}> to use this
+directly.
=cut
=item $c->set_action( $action, $code, $namespace, $attrs )
-Set an action in a given namespace.
+Sets an action in a given namespace.
=cut
=item $c->setup_actions($component)
-Setup actions for a component.
+Sets up actions for a component.
=cut
=item $c->setup_components
-Setup components.
+Sets up components.
=cut
my $callback = sub {
my ( $component, $context ) = @_;
- unless ( $component->isa('Catalyst::Base') ) {
+ unless ( $component->isa('Catalyst::Component') ) {
return $component;
}
=item $c->setup_dispatcher
+Sets up dispatcher.
+
=cut
sub setup_dispatcher {
}
unless ($dispatcher) {
- $dispatcher = 'Catalyst::Dispatcher';
+ $dispatcher = $class->dispatcher_class;
}
$dispatcher->require;
=item $c->setup_engine
+Sets up engine.
+
=cut
sub setup_engine {
}
unless ($engine) {
- $engine = 'Catalyst::Engine::CGI';
+ $engine = $class->engine_class;
}
$engine->require;
);
}
+ # check for old engines that are no longer compatible
+ my $old_engine;
+ if ( $engine->isa('Catalyst::Engine::Apache')
+ && !Catalyst::Engine::Apache->VERSION )
+ {
+ $old_engine = 1;
+ }
+
+ elsif ( $engine->isa('Catalyst::Engine::Server::Base')
+ && Catalyst::Engine::Server->VERSION le '0.02' )
+ {
+ $old_engine = 1;
+ }
+
+ elsif ($engine->isa('Catalyst::Engine::HTTP::POE')
+ && $engine->VERSION eq '0.01' )
+ {
+ $old_engine = 1;
+ }
+
+ elsif ($engine->isa('Catalyst::Engine::Zeus')
+ && $engine->VERSION eq '0.01' )
+ {
+ $old_engine = 1;
+ }
+
+ if ($old_engine) {
+ Catalyst::Exception->throw( message =>
+ qq/Engine "$engine" is not supported by this version of Catalyst/
+ );
+ }
+
# engine instance
$class->engine( $engine->new );
}
=item $c->setup_home
+Sets up the home directory.
+
=cut
sub setup_home {
=item $c->setup_log
+Sets up log.
+
=cut
sub setup_log {
$class->log( Catalyst::Log->new );
}
- if ( $ENV{CATALYST_DEBUG} || $ENV{ uc($class) . '_DEBUG' } || $debug ) {
+ my $app_flag = Catalyst::Utils::class2env($class) . '_DEBUG';
+
+ if (
+ ( defined( $ENV{CATALYST_DEBUG} ) || defined( $ENV{$app_flag} ) )
+ ? ( $ENV{CATALYST_DEBUG} || $ENV{$app_flag} )
+ : $debug
+ )
+ {
no strict 'refs';
*{"$class\::debug"} = sub { 1 };
$class->log->debug('Debug messages enabled');
=item $c->setup_plugins
+Sets up plugins.
+
=cut
sub setup_plugins {
}
}
+=item $c->stack
+
+Returns the stack.
+
=item $c->write( $data )
-Writes $data to the output stream. When using this method directly, you will
-need to manually set the Content-Length header to the length of your output
-data, if known.
+Writes $data to the output stream. When using this method directly, you
+will need to manually set the C<Content-Length> header to the length of
+your output data, if known.
=cut
-sub write { my $c = shift; return $c->engine->write( $c, @_ ) }
+sub write {
+ my $c = shift;
+
+ # Finalize headers if someone manually writes output
+ $c->finalize_headers;
+
+ return $c->engine->write( $c, @_ );
+}
+
+=item version
+
+Returns the Catalyst version number. Mostly useful for "powered by"
+messages in template systems.
+
+=cut
+
+sub version { return $Catalyst::VERSION }
=back
-=head1 CASE SENSITIVITY
+=head1 INTERNAL ACTIONS
+
+Catalyst uses internal actions like C<_DISPATCH>, C<_BEGIN>, C<_AUTO>,
+C<_ACTION>, and C<_END>. These are by default not shown in the private
+action table, but you can make them visible with a config parameter.
-By default Catalyst is not case sensitive, so C<MyApp::C::FOO::Bar> becomes
-C</foo/bar>.
+ MyApp->config->{show_internal_actions} = 1;
-But you can activate case sensitivity with a config parameter.
+=head1 CASE SENSITIVITY
+
+By default Catalyst is not case sensitive, so C<MyApp::C::FOO::Bar> is
+mapped to C</foo/bar>. You can activate case sensitivity with a config
+parameter.
MyApp->config->{case_sensitive} = 1;
-So C<MyApp::C::Foo::Bar> becomes C</Foo/Bar>.
+This causes C<MyApp::C::Foo::Bar> to map to C</Foo/Bar>.
=head1 ON-DEMAND PARSER
The request body is usually parsed at the beginning of a request,
-but if you want to handle input yourself or speed things up a bit
+but if you want to handle input yourself or speed things up a bit,
you can enable on-demand parsing with a config parameter.
MyApp->config->{parse_on_demand} = 1;
=head1 PROXY SUPPORT
-Many production servers operate using the common double-server approach, with
-a lightweight frontend web server passing requests to a larger backend
-server. An application running on the backend server must deal with two
-problems: the remote user always appears to be '127.0.0.1' and the server's
-hostname will appear to be 'localhost' regardless of the virtual host the
-user connected through.
+Many production servers operate using the common double-server approach,
+with a lightweight frontend web server passing requests to a larger
+backend server. An application running on the backend server must deal
+with two problems: the remote user always appears to be C<127.0.0.1> and
+the server's hostname will appear to be C<localhost> regardless of the
+virtual host that the user connected through.
-Catalyst will automatically detect this situation when you are running both
-the frontend and backend servers on the same machine. The following changes
-are made to the request.
+Catalyst will automatically detect this situation when you are running
+the frontend and backend servers on the same machine. The following
+changes are made to the request.
- $c->req->address is set to the user's real IP address, as read from the
- HTTP_X_FORWARDED_FOR header.
+ $c->req->address is set to the user's real IP address, as read from
+ the HTTP X-Forwarded-For header.
- The host value for $c->req->base and $c->req->uri is set to the real host,
- as read from the HTTP_X_FORWARDED_HOST header.
+ The host value for $c->req->base and $c->req->uri is set to the real
+ host, as read from the HTTP X-Forwarded-Host header.
-Obviously, your web server must support these 2 headers for this to work.
+Obviously, your web server must support these headers for this to work.
-In a more complex server farm environment where you may have your frontend
-proxy server(s) on different machines, you will need to set a configuration
-option to tell Catalyst to read the proxied data from the headers.
+In a more complex server farm environment where you may have your
+frontend proxy server(s) on different machines, you will need to set a
+configuration option to tell Catalyst to read the proxied data from the
+headers.
MyApp->config->{using_frontend_proxy} = 1;
=head1 THREAD SAFETY
Catalyst has been tested under Apache 2's threading mpm_worker, mpm_winnt,
-and the standalone forking HTTP server on Windows. We believe the Catalyst
+and the standalone forking HTTP server on Windows. We believe the Catalyst
core to be thread-safe.
If you plan to operate in a threaded environment, remember that all other
-modules you are using must also be thread-safe. Some modules, most notably
-DBD::SQLite, are not thread-safe.
+modules you are using must also be thread-safe. Some modules, most notably
+L<DBD::SQLite>, are not thread-safe.
=head1 SUPPORT
Join #catalyst on irc.perl.org.
-Mailing-Lists:
+Mailing Lists:
http://lists.rawmode.org/mailman/listinfo/catalyst
http://lists.rawmode.org/mailman/listinfo/catalyst-dev
http://catalyst.perl.org
+Wiki:
+
+ http://dev.catalyst.perl.org
+
=head1 SEE ALSO
=over 4
=item L<Catalyst::Manual> - The Catalyst Manual
-=item L<Catalyst::Engine> - Core Engine
+=item L<Catalyst::Component>, L<Catalyst::Base> - Base classes for components
+
+=item L<Catalyst::Engine> - Core engine
-=item L<Catalyst::Log> - The Log Class.
+=item L<Catalyst::Log> - Log class.
-=item L<Catalyst::Request> - The Request Object
+=item L<Catalyst::Request> - Request object
-=item L<Catalyst::Response> - The Response Object
+=item L<Catalyst::Response> - Response object
=item L<Catalyst::Test> - The test suite.
Andy Wardley
+Andreas Marienborg
+
+Andrew Bramble
+
Andrew Ford
Andrew Ruthven
Autrijus Tang
+Brian Cassidy
+
Christian Hansen
Christopher Hicks
Danijel Milicevic
+David Kamholz
+
David Naughton
Gary Ashton Jones
Robert Sedlacek
+Sam Vilain
+
+Sascha Kiefer
+
Tatsuhiko Miyagawa
Ulf Edvinsson
+Yuval Kogman
+
=head1 AUTHOR
Sebastian Riedel, C<sri@oook.de>
=head1 LICENSE
-This library is free software . You can redistribute it and/or modify it under
-the same terms as perl itself.
+This library is free software, you can redistribute it and/or modify it under
+the same terms as Perl itself.
=cut
projects / catagits/Catalyst-Runtime.git / blobdiff