=head2 Force debug screen
-You can force Catalyst to display the debug screen at the end of the
-request by placing a C<die()> call in the C<end> action.
+You can force Catalyst to display the debug screen at the end of the request by
+placing a C<die()> call in the C<end> action.
sub end : Private {
my ( $self, $c ) = @_;
die "forced debug";
}
-If you're tired of removing and adding this all the time, you
-can add a condition in the C<end> action:
+If you're tired of removing and adding this all the time, you can add a
+condition in the C<end> action. For example:
- sub end : Private {
- my ( $self, $c ) = @_;
- die "forced debug" if $c->req->params->{dump_info};
- }
+ sub end : Private {
+ my ( $self, $c ) = @_;
+ die "forced debug" if $c->req->params->{dump_info};
+ }
+
+Then just add to your query string C<"&dump_info=1">, or the like, to
+force debug output.
-Then just add to your query string C<"&dump_info=1">, or the like,
-to force debug output.
=head2 Disable statistics
1;
-Modify the $c->form() parameters to match your needs, and don't forget
-to copy the templates into the template root. Can't find the templates?
-They were in the CRUD model distribution, so you can do B<look
-Catalyst::Model::CDBI::CRUD> from the CPAN shell to find them.
+Modify the C<$c-E<gt>form()> parameters to match your needs, and don't
+forget to copy the templates into the template root. Can't find the
+templates? They were in the CRUD model distribution, so you can do
+B<look Catalyst::Model::CDBI::CRUD> from the CPAN shell to find them.
Other Scaffolding modules are in development at the time of writing.
-=head2 Single file upload with Catalyst
+=head2 File uploads
+
+=head3 Single file upload with Catalyst
To implement uploads in Catalyst you need to have a HTML form similiar to
this:
$c->stash->{template} = 'file_upload.html';
}
-=head2 Multiple file upload with Catalyst
+=head3 Multiple file upload with Catalyst
Code for uploading multiple files from one form needs a few changes:
<input type="submit" value="Send">
</form>
-And in the Controller:
+And in the controller:
sub upload : Local {
my ($self, $c) = @_;
=head2 Authentication with Catalyst::Plugin::Authentication::CDBI
There are (at least) two ways to implement authentication with this plugin:
-1) only checking username and password
+1) only checking username and password;
2) checking username, password, and the roles the user has
For both variants you'll need the following code in your MyApp package:
=head2 Pass-through login (and other actions)
-An easy way of having assorted actions that occur during the processing of
-a request that are orthogonal to its actual purpose - logins, silent
+An easy way of having assorted actions that occur during the processing
+of a request that are orthogonal to its actual purpose - logins, silent
commands etc. Provide actions for these, but when they're required for
-something else fill e.g. a form variable __login and have a sub begin like so:
+something else fill e.g. a form variable __login and have a sub begin
+like so:
-sub begin : Private {
- my ($self, $c) = @_;
- foreach my $action (qw/login docommand foo bar whatever/) {
- if ($c->req->params->{"__${action}"}) {
- $c->forward($action);
+ sub begin : Private {
+ my ($self, $c) = @_;
+ foreach my $action (qw/login docommand foo bar whatever/) {
+ if ($c->req->params->{"__${action}"}) {
+ $c->forward($action);
+ }
+ }
}
- }
-}
=head2 How to use Catalyst without mod_perl
just too slow. There's also an alternative to mod_perl that gives
reasonable performance named FastCGI.
-B<Using FastCGI>
+=head3 Using FastCGI
To quote from L<http://www.fastcgi.com/>: "FastCGI is a language
independent, scalable, extension to CGI that provides high performance
For more information see the FastCGI documentation, the C<FCGI> module
and L<http://www.fastcgi.com/>.
-
+
=head2 Serving static content
Serving static content in Catalyst can be somewhat tricky; this recipe
<link rel="icon" href="/static/myapp.ico" type="image/x-icon" />
-
=head3 Common problems
The Static plugin makes use of the C<shared-mime-info> package to
=head2 Forwarding with arguments
Sometimes you want to pass along arguments when forwarding to another
-action. This can be accomplished by simply setting the arguments before
-the forward:
-
+action. As of version 5.30, arguments can be passed in the call to
+C<forward>; 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/]);
+
+ # pre-5.30
$c->req->args([qw/arg1 arg2 arg3/]);
$c->forward('/wherever');
+(See L<Catalyst::Manual::Intro#Flow_Control> for more information on
+passing arguments via C<forward>.)
+
+=head2 Configure your application
+
+You configure your application with the C<config> method in your
+application class. This can be hard-coded, or brought in from a
+separate configuration file.
+
+=head3 Using YAML
+
+YAML 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.
+
+In your application class (e.g. C<lib/MyApp.pm>):
+
+ use YAML;
+ # application setup
+ __PACKAGE__->config( YAML::LoadFile(__PACKAGE__->config->{'home'} . '/myapp.yml') );
+ __PACKAGE__->setup;
+
+Now create C<myapp.yml> in your application home:
+
+ --- #YAML:1.0
+ # DO NOT USE TABS FOR INDENTATION OR label/value SEPARATION!!!
+ name: MyApp
+
+ # authentication; perldoc Catalyst::Plugin::Authentication::CDBI
+ authentication:
+ user_class: 'MyApp::M::MyDB::Customer'
+ user_field: 'username'
+ password_field: 'password'
+ password_hash: 'md5'
+ role_class: 'MyApp::M::MyDB::Role'
+ user_role_class: 'MyApp::M::MyDB::PersonRole'
+ user_role_user_field: 'person'
+
+ # session; perldoc Catalyst::Plugin::Session::FastMmap
+ session:
+ expires: '3600'
+ rewrite: '0'
+ storage: '/tmp/myapp.session'
+
+ # emails; perldoc Catalyst::Plugin::Email
+ # this passes options as an array :(
+ email:
+ - SMTP
+ - localhost
+
+This is equivalent to:
+
+ # configure base package
+ __PACKAGE__->config( name => MyApp );
+ # configure authentication
+ __PACKAGE__->config->{authentication} = {
+ user_class => 'MyApp::M::MyDB::Customer',
+ ...
+ };
+ # configure sessions
+ __PACKAGE__->config->{session} = {
+ expires => 3600,
+ ...
+ };
+ # configure email sending
+ __PACKAGE__->config->{email} = [qw/SMTP localhost/];
+
+See also L<YAML>.
+
+=head2 Using existing CDBI (etc.) classes with Catalyst
+
+Many people have existing Model classes that they would like to use with
+Catalyst (or, conversely, they want to write Catalyst models that can be
+used outside of Catalyst, e.g. in a cron job). It's trivial to write a
+simple component in Catalyst that slurps in an outside Model:
+
+ package MyApp::M::Catalog;
+ use base qw/Catalyst::Base Some::Other::CDBI::Module::Catalog/;
+ 1;
+
+and that's it! Now C<Some::Other::CDBI::Module::Catalog> is part of your
+Cat app as C<MyApp::M::Catalog>.
+
+=head1 Serving static files with Apache.
+
+When deploying your application it's a waste to serve static files
+with Catalyst. Instead, set up something like this:
+
+ Alias /static/ "/my/static/files/"
+ <Location "/static">
+ SetHandler none
+ </Location>
+
+To match the location of your static files.
+
+
+=cut
+
=head1 AUTHOR
Sebastian Riedel, C<sri@oook.de>
Danijel Milicevic, C<me@danijel.de>
-Viljo Marrandi, C<vilts@yahoo.com>
+Viljo Marrandi, C<vilts@yahoo.com>
Marcus Ramberg, C<mramberg@cpan.org>
-Andy Grundman, C<andy@hybridized.org>
+Jesse Sheidlower, C<jester@panix.com>
+Andy Grundman, C<andy@hybridized.org>
+Chisel Wright, C<pause@herlpacker.co.uk>
=head1 COPYRIGHT
projects / catagits/Catalyst-Runtime.git / blobdiff