X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=catagits%2FCatalyst-Manual.git;a=blobdiff_plain;f=lib%2FCatalyst%2FManual%2FCookbook.pod;h=bf6372bc664a3dab5dc107268f4ddc68d6553699;hp=8c4b7d43d334697ece9d5cbe29bee368d989a752;hb=02bb2b5a140dc22d7d002fcdce868656d704676a;hpb=6f660c96dfb8eea0b0790d635d8e2afa7fa42947 diff --git a/lib/Catalyst/Manual/Cookbook.pod b/lib/Catalyst/Manual/Cookbook.pod index 8c4b7d4..bf6372b 100644 --- a/lib/Catalyst/Manual/Cookbook.pod +++ b/lib/Catalyst/Manual/Cookbook.pod @@ -117,41 +117,39 @@ reference. =head3 EXAMPLE - package MyApp; - use Moose; - use namespace::autoclean; - - use Catalyst qw/ - Session - Session::Store::FastMmap - Session::State::Cookie - /; - extends 'Catalyst'; - __PACKAGE__->setup; - - package MyApp::Controller::Foo; - use Moose; - use namespace::autoclean; - BEGIN { extends 'Catalyst::Controller' }; - ## Write data into the session - - sub add_item : Local { - my ( $self, $c ) = @_; - - my $item_id = $c->req->params->{item}; - - push @{ $c->session->{items} }, $item_id; + package MyApp; + use Moose; + use namespace::autoclean; + + use Catalyst qw/ + Session + Session::Store::FastMmap + Session::State::Cookie + /; + extends 'Catalyst'; + __PACKAGE__->setup; + + package MyApp::Controller::Foo; + use Moose; + use namespace::autoclean; + BEGIN { extends 'Catalyst::Controller' }; + ## Write data into the session + + sub add_item : Local { + my ( $self, $c ) = @_; - } + my $item_id = $c->req->params->{item}; - ## A page later we retrieve the data from the session: + push @{ $c->session->{items} }, $item_id; + } - sub get_items : Local { - my ( $self, $c ) = @_; + ## A page later we retrieve the data from the session: - $c->stash->{items_to_display} = $c->session->{items}; + sub get_items : Local { + my ( $self, $c ) = @_; - } + $c->stash->{items_to_display} = $c->session->{items}; + } =head3 More information @@ -176,7 +174,7 @@ separate configuration file. =head3 Using Config::General -L is a method for creating flexible +L is a method for creating flexible and readable configuration files. It's a great way to keep your Catalyst application configuration in one easy-to-understand location. @@ -221,7 +219,7 @@ L explains precedence of multiple sources for configuration values, how to access the values in your components, and many 'base' config variables used internally. -See also L. +See also L. =head1 Skipping your VCS's directories @@ -310,9 +308,9 @@ C<< $c->user >> call. Examples: - Password - Simple username/password checking. - HTTPD - Checks using basic HTTP auth. - TypeKey - Check using the typekey system. + Password - Simple username/password checking. + HTTPD - Checks using basic HTTP auth. + TypeKey - Check using the typekey system. =head3 Storage backends @@ -322,8 +320,8 @@ within this system; you will need to do it yourself. Examples: - DBIC - Storage using a database via DBIx::Class. - Minimal - Storage using a simple hash (for testing). + DBIC - Storage using a database via DBIx::Class. + Minimal - Storage using a simple hash (for testing). =head3 User objects @@ -332,7 +330,7 @@ credential verifier, and is filled with the retrieved user information. Examples: - Hash - A simple hash of keys and values. + Hash - A simple hash of keys and values. =head3 ACL authorization @@ -361,67 +359,67 @@ the user is a member. =head3 EXAMPLE - package MyApp; - use Moose; - use namespace::autoclean; - extends qw/Catalyst/; - use Catalyst qw/ - Authentication - Authorization::Roles - /; + package MyApp; + use Moose; + use namespace::autoclean; + extends qw/Catalyst/; + use Catalyst qw/ + Authentication + Authorization::Roles + /; - __PACKAGE__->config( - authentication => { - default_realm => 'test', - realms => { - test => { - credential => { - class => 'Password', - password_field => 'password', - password_type => 'self_check', - }, - store => { - class => 'Htpasswd', - file => 'htpasswd', - }, - }, - }, - }, - ); + __PACKAGE__->config( + authentication => { + default_realm => 'test', + realms => { + test => { + credential => { + class => 'Password', + password_field => 'password', + password_type => 'self_check', + }, + store => { + class => 'Htpasswd', + file => 'htpasswd', + }, + }, + }, + }, + ); - package MyApp::Controller::Root; - use Moose; - use namespace::autoclean; + package MyApp::Controller::Root; + use Moose; + use namespace::autoclean; - BEGIN { extends 'Catalyst::Controller' } + BEGIN { extends 'Catalyst::Controller' } - __PACKAGE__->config(namespace => ''); + __PACKAGE__->config(namespace => ''); - sub login : Local { - my ($self, $c) = @_; + sub login : Local { + my ($self, $c) = @_; - if ( my $user = $c->req->params->{user} - and my $password = $c->req->param->{password} ) - { - if ( $c->authenticate( username => $user, password => $password ) ) { - $c->res->body( "hello " . $c->user->name ); - } else { - # login incorrect - } - } - else { - # invalid form input - } - } + if ( my $user = $c->req->params->{user} + and my $password = $c->req->param->{password} ) + { + if ( $c->authenticate( username => $user, password => $password ) ) { + $c->res->body( "hello " . $c->user->name ); + } else { + # login incorrect + } + } + else { + # invalid form input + } + } - sub restricted : Local { - my ( $self, $c ) = @_; + sub restricted : Local { + my ( $self, $c ) = @_; - $c->detach("unauthorized") - unless $c->check_user_roles( "admin" ); + $c->detach("unauthorized") + unless $c->check_user_roles( "admin" ); - # do something restricted here - } + # do something restricted here + } =head3 Using authentication in a testing environment @@ -575,7 +573,7 @@ clean up in your C private action instead. Also, it's important to note that if you restrict access to "/" then C, C, etc. will also be restricted. - MyApp->acl_allow_root_internals; + MyApp->acl_allow_root_internals; will create rules that permit access to C, C, and C in the root of your app (but not in any other controller). @@ -821,17 +819,17 @@ This time, the helper sets several options for us in the generated View. =over -=item +=item * INCLUDE_PATH defines the directories that Template Toolkit should search for the template files. -=item +=item * PRE_PROCESS is used to process configuration options which are common to every template file. -=item +=item * WRAPPER is a file which is processed with each template, usually used to easily provide a common header and footer for every page. @@ -856,7 +854,7 @@ or sections; just put in the content. The WRAPPER will the rest of the page around your template for you. -=head3 $c->stash +=head3 C<< $c->stash >> Of course, having the template system include the header and footer for you isn't all that we want our templates to do. We need to be able to @@ -911,7 +909,7 @@ This is the most basic usage, but Template Toolkit is quite powerful, and allows you to truly keep your presentation logic separate from the rest of your application. -=head3 $c->uri_for() +=head3 C<< $c->uri_for() >> One of my favorite things about Catalyst is the ability to move an application around without having to worry that everything is going to @@ -922,7 +920,7 @@ to "/Calendar", "/Calendar/2005", "/Calendar/2005/10", etc. If you move the application to be at http://www.mydomain.com/Tools/Calendar, then all of those links will suddenly break. -That's where $c->uri_for() comes in. This function will merge its +That's where C<< $c->uri_for() >> comes in. This function will merge its parameters with either the base location for the app, or its current namespace. Let's take a look at a couple of examples. @@ -944,7 +942,7 @@ Likewise, The first parameter does NOT have a forward slash, and so it will be relative to the current namespace. If the application is installed at http://www.domain.com/Calendar. and if the template is called from -MyApp::Controller::Display, then the link would become +C, then the link would become http://www.domain.com/Calendar/Display/2005/10/24. If you want to link to a parent uri of your current namespace you can @@ -1083,7 +1081,7 @@ attached. These can be one of several types. Assume our Controller module starts with the following package declaration: - package MyApp::Controller::Buckets; + package MyApp::Controller::Buckets; and we are running our application on localhost, port 3000 (the test server default). @@ -1097,19 +1095,19 @@ or an absolute path. A relative path will be relative to the controller namespace, an absolute path will represent an exact matching URL. - sub my_handles : Path('handles') { .. } + sub my_handles : Path('handles') { .. } becomes - http://localhost:3000/buckets/handles + http://localhost:3000/buckets/handles and - sub my_handles : Path('/handles') { .. } + sub my_handles : Path('/handles') { .. } becomes - http://localhost:3000/handles + http://localhost:3000/handles See also: L @@ -1119,22 +1117,22 @@ When using a Local attribute, no parameters are needed, instead, the name of the action is matched in the URL. The namespaces created by the name of the controller package is always part of the URL. - sub my_handles : Local { .. } + sub my_handles : Local { .. } becomes - http://localhost:3000/buckets/my_handles + http://localhost:3000/buckets/my_handles =item Global A Global attribute is similar to a Local attribute, except that the namespace of the controller is ignored, and matching starts at root. - sub my_handles : Global { .. } + sub my_handles : Global { .. } becomes - http://localhost:3000/my_handles + http://localhost:3000/my_handles =item Regex @@ -1142,15 +1140,15 @@ By now you should have figured that a Regex attribute is just what it sounds like. This one takes a regular expression, and matches starting from root. These differ from the rest as they can match multiple URLs. - sub my_handles : Regex('^handles') { .. } + sub my_handles : Regex('^handles') { .. } matches - http://localhost:3000/handles + http://localhost:3000/handles and - http://localhost:3000/handles_and_other_parts + http://localhost:3000/handles_and_other_parts etc. @@ -1161,15 +1159,15 @@ See also: L A LocalRegex is similar to a Regex, except it only matches below the current controller namespace. - sub my_handles : LocalRegex(^handles') { .. } + sub my_handles : LocalRegex(^handles') { .. } matches - http://localhost:3000/buckets/handles + http://localhost:3000/buckets/handles and - http://localhost:3000/buckets/handles_and_other_parts + http://localhost:3000/buckets/handles_and_other_parts etc. @@ -1184,7 +1182,7 @@ Last but not least, there is the Private attribute, which allows you to create your own internal actions, which can be forwarded to, but won't be matched as URLs. - sub my_handles : Private { .. } + sub my_handles : Private { .. } becomes nothing at all.. @@ -1201,7 +1199,7 @@ part of your namespace, you'll get an error page instead. If you want to find out where it was the user was trying to go, you can look in the request object using C<< $c->req->path >>. - sub default :Path { .. } + sub default :Path { .. } works for all unknown URLs, in this controller namespace, or every one if put directly into MyApp.pm. @@ -1213,11 +1211,11 @@ namespace of your controller. If index, default and matching Path actions are defined, then index will be used instead of default and Path. - sub index :Path :Args(0) { .. } + sub index :Path :Args(0) { .. } becomes - http://localhost:3000/buckets + http://localhost:3000/buckets =item begin @@ -1227,11 +1225,11 @@ can be used to set up variables/data for this particular part of your app. A single begin action is called, its always the one most relevant to the current namespace. - sub begin : Private { .. } + sub begin : Private { .. } is called once when - http://localhost:3000/bucket/(anything)? + http://localhost:3000/bucket/(anything)? is visited. @@ -1243,11 +1241,11 @@ processing to the View component. A single end action is called, its always the one most relevant to the current namespace. - sub end : Private { .. } + sub end : Private { .. } is called once after any actions when - http://localhost:3000/bucket/(anything)? + http://localhost:3000/bucket/(anything)? is visited. @@ -1258,8 +1256,8 @@ chain of paths up to and including the ending namespace, will be called. (In contrast, only one of the begin/end/default actions will be called, the relevant one). - package MyApp::Controller::Root; - sub auto : Private { .. } + package MyApp::Controller::Root; + sub auto : Private { .. } and @@ -1267,7 +1265,7 @@ and will both be called when visiting - http://localhost:3000/bucket/(anything)? + http://localhost:3000/bucket/(anything)? =back @@ -1360,9 +1358,9 @@ To implement uploads in Catalyst, you need to have a HTML form similar to this:
- - - + + +
It's very important not to forget C in @@ -1396,11 +1394,11 @@ Code for uploading multiple files from one form needs a few changes: The form should have this basic structure:
- -
-
-
- + +
+
+
+
And in the controller: @@ -1444,22 +1442,22 @@ action. As of version 5.30, arguments can be passed in the call to C; in earlier versions, you can manually set the arguments in the Catalyst Request object: - # version 5.30 and later: - $c->forward('/wherever', [qw/arg1 arg2 arg3/]); + # version 5.30 and later: + $c->forward('/wherever', [qw/arg1 arg2 arg3/]); - # pre-5.30 - $c->req->args([qw/arg1 arg2 arg3/]); - $c->forward('/wherever'); + # pre-5.30 + $c->req->args([qw/arg1 arg2 arg3/]); + $c->forward('/wherever'); (See the L Flow_Control section for more information on passing arguments via C.) =head2 Chained dispatch using base classes, and inner packages. - package MyApp::Controller::Base; - use base qw/Catalyst::Controller/; + package MyApp::Controller::Base; + use base qw/Catalyst::Controller/; - sub key1 : Chained('/') + sub key1 : Chained('/') =head2 Extending RenderView (formerly DefaultEnd) @@ -1476,8 +1474,8 @@ To add something to an C action that is called before rendering method: sub end : ActionClass('RenderView') { - my ( $self, $c ) = @_; - # do stuff here; the RenderView action is called afterwards + my ( $self, $c ) = @_; + # do stuff here; the RenderView action is called afterwards } To add things to an C action that are called I rendering, @@ -1486,9 +1484,9 @@ you can set it up like this: sub render : ActionClass('RenderView') { } sub end : Private { - my ( $self, $c ) = @_; - $c->forward('render'); - # do stuff here + my ( $self, $c ) = @_; + $c->forward('render'); + # do stuff here } @@ -1512,7 +1510,7 @@ F is found and served. Using the plugin is as simple as setting your use line in MyApp.pm to include: - use Catalyst qw/Static::Simple/; + use Catalyst qw/Static::Simple/; and already files will be served. @@ -1547,14 +1545,14 @@ Template Toolkit files. You may of course want to change the default locations, and make Static::Simple look somewhere else, this is as easy as: - MyApp->config( - static => { - include_path => [ - MyApp->path_to('/'), - '/path/to/my/files', - ], - }, - ); + MyApp->config( + static => { + include_path => [ + MyApp->path_to('/'), + '/path/to/my/files', + ], + }, + ); When you override include_path, it will not automatically append the normal root path, so you need to add it yourself if you still want @@ -1566,14 +1564,14 @@ served. If you want to force some directories to be only static, you can set them using paths relative to the root dir, or regular expressions: - MyApp->config( - static => { - dirs => [ - 'static', - qr/^(images|css)/, - ], - }, - ); + MyApp->config( + static => { + dirs => [ + 'static', + qr/^(images|css)/, + ], + }, + ); =item File extensions @@ -1581,22 +1579,22 @@ By default, the following extensions are not served (that is, they will be processed by Catalyst): B. This list can be replaced easily: - MyApp->config( + MyApp->config( static => { ignore_extensions => [ qw/tmpl tt tt2 html xhtml/ ], }, - ); + ); =item Ignoring directories Entire directories can be ignored. If used with include_path, directories relative to the include_path dirs will also be ignored: - MyApp->config( static => { + MyApp->config( static => { ignore_dirs => [ qw/tmpl css/ ], - }); + }); =back @@ -1620,7 +1618,7 @@ static content to the view, perhaps like this: my ( $self, $c ) = @_; $c->forward( 'MyApp::View::TT' ) - unless ( $c->res->body || !$c->stash->{template} ); + unless ( $c->res->body || !$c->stash->{template} ); } This code will only forward to the view if a template has been