X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FCatalyst%2FView%2FTT.pm;h=f4d5762cf4164485d0566222b35936e06a6f0c10;hb=fe3df9dcf23365f7d3e685d128042393703a3ad7;hp=c66a8e2084ea62840c26b5e333d70756b7c70b3a;hpb=9300af5b2141fe8d2eca26f52b13fa59e11ef6e0;p=catagits%2FCatalyst-View-TT.git

diff --git a/lib/Catalyst/View/TT.pm b/lib/Catalyst/View/TT.pm
index c66a8e2..f4d5762 100644
--- a/lib/Catalyst/View/TT.pm
+++ b/lib/Catalyst/View/TT.pm
@@ -1,14 +1,23 @@
 package Catalyst::View::TT;
 
 use strict;
-use base qw/Catalyst::Base/;
+use warnings;
+
+use base qw/Catalyst::View/;
+use Data::Dump 'dump';
 use Template;
 use Template::Timer;
-use NEXT;
+use MRO::Compat;
+use Scalar::Util qw/blessed weaken/;
 
-our $VERSION = '0.13';
+our $VERSION = '0.38';
+$VERSION = eval $VERSION;
 
 __PACKAGE__->mk_accessors('template');
+__PACKAGE__->mk_accessors('expose_methods');
+__PACKAGE__->mk_accessors('include_path');
+
+*paths = \&include_path;
 
 =head1 NAME
 
@@ -16,147 +25,209 @@ Catalyst::View::TT - Template View Class
 
 =head1 SYNOPSIS
 
-    # use the helper
-    myapp_create.pl view TT TT
-
-    # lib/MyApp/View/TT.pm
-    package MyApp::View::TT;
-
-    use base 'Catalyst::View::TT';
-
-    __PACKAGE__->config->{DEBUG} = 'all';
-
-    # in practice you'd probably set this from a config file;
-    # defaults to $c->config->root
-    __PACKAGE__->config->{INCLUDE_PATH} =
-       '/usr/local/generic/templates:/usr/local/myapp/templates';
-
-    1;
-    
-    # Meanwhile, maybe in a private C<end> action
-    $c->forward('MyApp::View::TT');
+# use the helper to create your View
 
+    myapp_create.pl view Web TT
 
-=head1 DESCRIPTION
+# add custom configration in View/Web.pm
 
-This is the Catalyst view class for the L<Template
-Toolkit|Template>. Your application subclass should inherit from this
-class. This plugin renders the template specified in
-C<$c-E<gt>stash-E<gt>{template}>, or failing that,
-C<$c-E<gt>request-E<gt>match>. The template variables are set up from
-the contents of C<$c-E<gt>stash>, augmented with template variable
-C<base> set to Catalyst's C<$c-E<gt>req-E<gt>base>, template variable
-C<c> to Catalyst's C<$c>, and template variable C<name> to Catalyst's
-C<$c-E<gt>config-E<gt>{name}>. The output is stored in
-C<$c-E<gt>response-E<gt>output>.
-
-If you want to override TT config settings, you can do it in your
-application's view class by setting
-C<__PACKAGE__-E<gt>config-E<gt>{OPTION}>, as shown in the Synopsis. Of
-interest might be C<EVAL_PERL>, which is disabled by default,
-C<INCLUDE_PATH>, and C<LOAD_TEMPLATES>, which is set to use the
-provider.
-
-If you want to use C<EVAL_PERL>, add something like this:
-
-    __PACKAGE__->config->{EVAL_PERL} = 1;
-    __PACKAGE__->config->{LOAD_TEMPLATES} = undef;
-
-If you have configured Catalyst for debug output, C<Catalyst::View::TT>
-will enable profiling of template processing (using
-L<Template::Timer>). This will embed HTML comments in the output from
-your templates, such as:
+    __PACKAGE__->config(
+        # any TT configuration items go here
+        TEMPLATE_EXTENSION => '.tt',
+        CATALYST_VAR => 'c',
+        TIMER        => 0,
+        ENCODING     => 'utf-8'
+        # Not set by default
+        PRE_PROCESS        => 'config/main',
+        WRAPPER            => 'site/wrapper',
+        render_die => 1, # Default for new apps, see render method docs
+        expose_methods => [qw/method_in_view_class/],
+    );
 
-    <!-- TIMER START: process mainmenu/mainmenu.ttml -->
-    <!-- TIMER START: include mainmenu/cssindex.tt -->
-    <!-- TIMER START: process mainmenu/cssindex.tt -->
-    <!-- TIMER END: process mainmenu/cssindex.tt (0.017279 seconds) -->
-    <!-- TIMER END: include mainmenu/cssindex.tt (0.017401 seconds) -->
+# add include path configuration in MyApp.pm
 
-    ....
+    __PACKAGE__->config(
+        'View::Web' => {
+            INCLUDE_PATH => [
+                __PACKAGE__->path_to( 'root', 'src' ),
+                __PACKAGE__->path_to( 'root', 'lib' ),
+            ],
+        },
+    );
 
-    <!-- TIMER END: process mainmenu/footer.tt (0.003016 seconds) -->
+# render view from lib/MyApp.pm or lib/MyApp::Controller::SomeController.pm
 
-You can suppress template profiling when debug is enabled by setting:
+    sub message : Global {
+        my ( $self, $c ) = @_;
+        $c->stash->{template} = 'message.tt2';
+        $c->stash->{message}  = 'Hello World!';
+        $c->forward( $c->view('Web') );
+    }
 
-    __PACKAGE__->config->{CONTEXT} = undef;
+# access variables from template
 
+    The message is: [% message %].
 
-=head2 METHODS
+    # example when CATALYST_VAR is set to 'Catalyst'
+    Context is [% Catalyst %]
+    The base is [% Catalyst.req.base %]
+    The name is [% Catalyst.config.name %]
 
-=over 4
+    # example when CATALYST_VAR isn't set
+    Context is [% c %]
+    The base is [% base %]
+    The name is [% name %]
 
-=item new
+=cut
 
-The constructor for the TT view. Sets up the template provider, 
-and reads the application config.
+sub _coerce_paths {
+    my ( $paths, $dlim ) = shift;
+    return () if ( !$paths );
+    return @{$paths} if ( ref $paths eq 'ARRAY' );
 
-=cut
+    # tweak delim to ignore C:/
+    unless ( defined $dlim ) {
+        $dlim = ( $^O eq 'MSWin32' ) ? ':(?!\\/)' : ':';
+    }
+    return split( /$dlim/, $paths );
+}
 
 sub new {
     my ( $class, $c, $arguments ) = @_;
+    my $config = {
+        EVAL_PERL          => 0,
+        TEMPLATE_EXTENSION => '',
+        CLASS              => 'Template',
+        %{ $class->config },
+        %{$arguments},
+    };
+    if ( ! (ref $config->{INCLUDE_PATH} eq 'ARRAY') ) {
+        my $delim = $config->{DELIMITER};
+        my @include_path
+            = _coerce_paths( $config->{INCLUDE_PATH}, $delim );
+        if ( !@include_path ) {
+            my $root = $c->config->{root};
+            my $base = Path::Class::dir( $root, 'base' );
+            @include_path = ( "$root", "$base" );
+        }
+        $config->{INCLUDE_PATH} = \@include_path;
+    }
 
-    my $root = $c->config->{root};
+    # if we're debugging and/or the TIMER option is set, then we install
+    # Template::Timer as a custom CONTEXT object, but only if we haven't
+    # already got a custom CONTEXT defined
+
+    if ( $config->{TIMER} ) {
+        if ( $config->{CONTEXT} ) {
+            $c->log->error(
+                'Cannot use Template::Timer - a TT CONTEXT is already defined'
+            );
+        }
+        else {
+            $config->{CONTEXT} = Template::Timer->new(%$config);
+        }
+    }
 
-    my %config = (
-        EVAL_PERL    => 0,
-        INCLUDE_PATH => [ $root, "$root/base" ],
-        %{ $class->config },
-        %{ $arguments }
+    if ( $c->debug && $config->{DUMP_CONFIG} ) {
+        $c->log->debug( "TT Config: ", dump($config) );
+    }
+
+    my $self = $class->next::method(
+        $c, { %$config },
     );
 
-    if ( $c->debug && not exists $config{CONTEXT} ) {
-       $config{CONTEXT} = Template::Timer->new(%config);
+    # Set base include paths. Local'd in render if needed
+    $self->include_path($config->{INCLUDE_PATH});
+
+    $self->expose_methods($config->{expose_methods});
+    $self->config($config);
+
+    # Creation of template outside of call to new so that we can pass [ $self ]
+    # as INCLUDE_PATH config item, which then gets ->paths() called to get list
+    # of include paths to search for templates.
+
+    # Use a weakend copy of self so we dont have loops preventing GC from working
+    my $copy = $self;
+    Scalar::Util::weaken($copy);
+    $config->{INCLUDE_PATH} = [ sub { $copy->paths } ];
+
+    if ( $config->{PROVIDERS} ) {
+        my @providers = ();
+        if ( ref($config->{PROVIDERS}) eq 'ARRAY') {
+            foreach my $p (@{$config->{PROVIDERS}}) {
+                my $pname = $p->{name};
+                my $prov = 'Template::Provider';
+                if($pname eq '_file_')
+                {
+                    $p->{args} = { %$config };
+                }
+                else
+                {
+                    if($pname =~ s/^\+//) {
+                        $prov = $pname;
+                    }
+                    else
+                    {
+                        $prov .= "::$pname";
+                    }
+                    # We copy the args people want from the config
+                    # to the args
+                    $p->{args} ||= {};
+                    if ($p->{copy_config}) {
+                        map  { $p->{args}->{$_} = $config->{$_}  }
+                                   grep { exists $config->{$_} }
+                                   @{ $p->{copy_config} };
+                    }
+                }
+                local $@;
+                eval "require $prov";
+                if(!$@) {
+                    push @providers, "$prov"->new($p->{args});
+                }
+                else
+                {
+                    $c->log->warn("Can't load $prov, ($@)");
+                }
+            }
+        }
+        delete $config->{PROVIDERS};
+        if(@providers) {
+            $config->{LOAD_TEMPLATES} = \@providers;
+        }
     }
 
-    return $class->NEXT::new( $c, { template => Template->new( \%config ) } );
-}
-
-=item process
+    $self->{template} =
+        $config->{CLASS}->new($config) || do {
+            my $error = $config->{CLASS}->error();
+            $c->log->error($error);
+            $c->error($error);
+            return undef;
+        };
 
-Renders the template specified in C<$c-E<gt>stash-E<gt>{template}> or
-C<$c-E<gt>request-E<gt>match>. Template variables are set up from the
-contents of C<$c-E<gt>stash>, augmented with C<base> set to
-C<$c-E<gt>req-E<gt>base>, C<c> to C<$c> and C<name> to
-C<$c-E<gt>config-E<gt>{name}>. Output is stored in
-C<$c-E<gt>response-E<gt>output>.
 
-=cut
+    return $self;
+}
 
 sub process {
     my ( $self, $c ) = @_;
 
-    my $template = $c->stash->{template} || $c->request->match;
+    my $template = $c->stash->{template}
+      ||  $c->action . $self->config->{TEMPLATE_EXTENSION};
 
-    unless ($template) {
+    unless (defined $template) {
         $c->log->debug('No template specified for rendering') if $c->debug;
         return 0;
     }
 
-    $c->log->debug(qq/Rendering template "$template"/) if $c->debug;
-    
-    my $output;
-
-    unless (
-        $self->template->process(
-            $template,
-            {
-                base => $c->req->base,
-                c    => $c,
-                name => $c->config->{name},
-                %{ $c->stash }
-            },
-            \$output
-        )
-      )
-    {
-        my $error = $self->template->error;
-        $error = qq/Couldn't render template "$error"/;
-        $c->log->error($error);
-        $c->error($error);
-        return 0;
+    local $@;
+    my $output = eval { $self->render($c, $template) };
+    if (my $err = $@) {
+        return $self->_rendering_error($c, $template . ': ' . $err);
     }
-    
+    if (blessed($output) && $output->isa('Template::Exception')) {
+        $self->_rendering_error($c, $output);
+    }
+
     unless ( $c->response->content_type ) {
         $c->response->content_type('text/html; charset=utf-8');
     }
@@ -166,28 +237,545 @@ sub process {
     return 1;
 }
 
-=item config
+sub _rendering_error {
+    my ($self, $c, $err) = @_;
+    my $error = qq/Couldn't render template "$err"/;
+    $c->log->error($error);
+    $c->error($error);
+    return 0;
+}
+
+sub render {
+    my ($self, $c, $template, $args) = @_;
+
+    $c->log->debug(qq/Rendering template "$template"/) if $c && $c->debug;
+
+    my $output;
+    my $vars = {
+        (ref $args eq 'HASH' ? %$args : %{ $c->stash() }),
+        $self->template_vars($c)
+    };
+
+    local $self->{include_path} =
+        [ @{ $vars->{additional_template_paths} }, @{ $self->{include_path} } ]
+        if ref $vars->{additional_template_paths};
+
+    unless ( $self->template->process( $template, $vars, \$output ) ) {
+        if (exists $self->{render_die}) {
+            die $self->template->error if $self->{render_die};
+            return $self->template->error;
+        }
+        $c->log->debug('The Catalyst::View::TT render() method will start dying on error in a future release. Unless you are calling the render() method manually, you probably want the new behaviour, so set render_die => 1 in config for ' . blessed($self) . '. If you wish to continue to return the exception rather than throwing it, add render_die => 0 to your config.') if $c->debug;
+        return $self->template->error;
+    }
+    return $output;
+}
+
+sub template_vars {
+    my ( $self, $c ) = @_;
+
+    return  () unless $c;
+    my $cvar = $self->config->{CATALYST_VAR};
+
+    my %vars = defined $cvar
+      ? ( $cvar => $c )
+      : (
+        c    => $c,
+        base => $c->req->base,
+        name => $c->config->{name}
+      );
+
+    if ($self->expose_methods) {
+        my $meta = $self->meta;
+        foreach my $method_name (@{$self->expose_methods}) {
+            my $method = $meta->find_method_by_name( $method_name );
+            unless ($method) {
+                Catalyst::Exception->throw( "$method_name not found in TT view" );
+            }
+            my $method_body = $method->body;
+            my $weak_ctx = $c;
+            weaken $weak_ctx;
+            my $sub = sub {
+                $self->$method_body($weak_ctx, @_);
+            };
+            $vars{$method_name} = $sub;
+        }
+    }
+    return %vars;
+}
+
+1;
 
-This allows your view subclass to pass additional settings to the
-TT config hash.
+__END__
+
+=head1 DESCRIPTION
+
+This is the Catalyst view class for the L<Template Toolkit|Template>.
+Your application should defined a view class which is a subclass of
+this module. Throughout this manual it will be assumed that your application
+is named F<MyApp> and you are creating a TT view named F<Web>; these names
+are placeholders and should always be replaced with whatever name you've
+chosen for your application and your view. The easiest way to create a TT
+view class is through the F<myapp_create.pl> script that is created along
+with the application:
+
+    $ script/myapp_create.pl view Web TT
+
+This creates a F<MyApp::View::Web.pm> module in the F<lib> directory (again,
+replacing C<MyApp> with the name of your application) which looks
+something like this:
+
+    package FooBar::View::Web;
+    use Moose;
+
+    extends 'Catalyst::View::TT';
+
+    __PACKAGE__->config(DEBUG => 'all');
+
+Now you can modify your action handlers in the main application and/or
+controllers to forward to your view class.  You might choose to do this
+in the end() method, for example, to automatically forward all actions
+to the TT view class.
+
+    # In MyApp or MyApp::Controller::SomeController
+
+    sub end : Private {
+        my( $self, $c ) = @_;
+        $c->forward( $c->view('Web') );
+    }
+
+But if you are using the standard auto-generated end action, you don't even need
+to do this!
+
+    # in MyApp::Controller::Root
+    sub end : ActionClass('RenderView') {} # no need to change this line
+
+    # in MyApp.pm
+    __PACKAGE__->config(
+        ...
+        default_view => 'Web',
+    );
+
+This will Just Work.  And it has the advantages that:
+
+=over 4
+
+=item *
+
+If you want to use a different view for a given request, just set 
+<< $c->stash->{current_view} >>.  (See L<Catalyst>'s C<< $c->view >> method
+for details.
+
+=item *
+
+<< $c->res->redirect >> is handled by default.  If you just forward to 
+C<View::Web> in your C<end> routine, you could break this by sending additional
+content.
 
 =back
 
+See L<Catalyst::Action::RenderView> for more details.
+
+=head2 CONFIGURATION
+
+There are a three different ways to configure your view class.  The
+first way is to call the C<config()> method in the view subclass.  This
+happens when the module is first loaded.
+
+    package MyApp::View::Web;
+    use Moose;
+    extends 'Catalyst::View::TT';
+
+    __PACKAGE__->config({
+        PRE_PROCESS  => 'config/main',
+        WRAPPER      => 'site/wrapper',
+    });
+
+You may also override the configuration provided in the view class by adding
+a 'View::Web' section to your application config.
+
+This should generally be used to inject the include paths into the view to
+avoid the view trying to load the application to resolve paths.
+
+    .. inside MyApp.pm ..
+    __PACKAGE__->config(
+        'View::Web' => {
+            INCLUDE_PATH => [
+                __PACKAGE__->path_to( 'root', 'templates', 'lib' ),
+                __PACKAGE__->path_to( 'root', 'templates', 'src' ),
+            ],
+        },
+    );
+
+You can also configure your view from within your config file if you're
+using L<Catalyst::Plugin::ConfigLoader>. This should be reserved for
+deployment-specific concerns. For example:
+
+    # MyApp_local.conf (Config::General format)
+
+    <View Web>
+      WRAPPER "custom_wrapper"
+      INCLUDE_PATH __path_to('root/templates/custom_site')__
+      INCLUDE_PATH __path_to('root/templates')__
+    </View>
+
+might be used as part of a simple way to deploy different instances of the
+same application with different themes.
+
+=head2 DYNAMIC INCLUDE_PATH
+
+Sometimes it is desirable to modify INCLUDE_PATH for your templates at run time.
+
+Additional paths can be added to the start of INCLUDE_PATH via the stash as
+follows:
+
+    $c->stash->{additional_template_paths} =
+        [$c->config->{root} . '/test_include_path'];
+
+If you need to add paths to the end of INCLUDE_PATH, there is also an
+include_path() accessor available:
+
+    push( @{ $c->view('Web')->include_path }, qw/path/ );
+
+Note that if you use include_path() to add extra paths to INCLUDE_PATH, you
+MUST check for duplicate paths. Without such checking, the above code will add
+"path" to INCLUDE_PATH at every request, causing a memory leak.
+
+A safer approach is to use include_path() to overwrite the array of paths
+rather than adding to it. This eliminates both the need to perform duplicate
+checking and the chance of a memory leak:
+
+    @{ $c->view('Web')->include_path } = qw/path another_path/;
+
+If you are calling C<render> directly then you can specify dynamic paths by
+having a C<additional_template_paths> key with a value of additonal directories
+to search. See L<CAPTURING TEMPLATE OUTPUT> for an example showing this.
+
+=head2 Unicode
+
+Be sure to set C<< ENCODING => 'utf-8' >> and use
+L<Catalyst::Plugin::Unicode::Encoding> if you want to use non-ascii
+characters (encoded as utf-8) in your templates.
+
+=head2 RENDERING VIEWS
+
+The view plugin renders the template specified in the C<template>
+item in the stash.
+
+    sub message : Global {
+        my ( $self, $c ) = @_;
+        $c->stash->{template} = 'message.tt2';
+        $c->forward( $c->view('Web') );
+    }
+
+If a stash item isn't defined, then it instead uses the
+stringification of the action dispatched to (as defined by $c->action)
+in the above example, this would be C<message>, but because the default
+is to append '.tt', it would load C<root/message.tt>.
+
+The items defined in the stash are passed to the Template Toolkit for
+use as template variables.
+
+    sub default : Private {
+        my ( $self, $c ) = @_;
+        $c->stash->{template} = 'message.tt2';
+        $c->stash->{message}  = 'Hello World!';
+        $c->forward( $c->view('Web') );
+    }
+
+A number of other template variables are also added:
+
+    c      A reference to the context object, $c
+    base   The URL base, from $c->req->base()
+    name   The application name, from $c->config->{ name }
+
+These can be accessed from the template in the usual way:
+
+<message.tt2>:
+
+    The message is: [% message %]
+    The base is [% base %]
+    The name is [% name %]
+
+
+The output generated by the template is stored in C<< $c->response->body >>.
+
+=head2 CAPTURING TEMPLATE OUTPUT
+
+If you wish to use the output of a template for some other purpose than
+displaying in the response, e.g. for sending an email, this is possible using
+L<Catalyst::Plugin::Email> and the L<render> method:
+
+  sub send_email : Local {
+    my ($self, $c) = @_;
+
+    $c->email(
+      header => [
+        To      => 'me@localhost',
+        Subject => 'A TT Email',
+      ],
+      body => $c->view('Web')->render($c, 'email.tt', {
+        additional_template_paths => [ $c->config->{root} . '/email_templates'],
+        email_tmpl_param1 => 'foo'
+        }
+      ),
+    );
+  # Redirect or display a message
+  }
+
+=head2 TEMPLATE PROFILING
+
+See L<C<TIMER>> property of the L<config> method.
+
+=head2 METHODS
+
+=head2 new
+
+The constructor for the TT view. Sets up the template provider,
+and reads the application config.
+
+=head2 process($c)
+
+Renders the template specified in C<< $c->stash->{template} >> or
+C<< $c->action >> (the private name of the matched action).  Calls L<render> to
+perform actual rendering. Output is stored in C<< $c->response->body >>.
+
+It is possible to forward to the process method of a TT view from inside
+Catalyst like this:
+
+    $c->forward('View::Web');
+
+N.B. This is usually done automatically by L<Catalyst::Action::RenderView>.
+
+=head2 render($c, $template, \%args)
+
+Renders the given template and returns output. Throws a L<Template::Exception>
+object upon error.
+
+The template variables are set to C<%$args> if C<$args> is a hashref, or
+C<< $c->stash >> otherwise. In either case the variables are augmented with
+C<base> set to C<< $c->req->base >>, C<c> to C<$c>, and C<name> to
+C<< $c->config->{name} >>. Alternately, the C<CATALYST_VAR> configuration item
+can be defined to specify the name of a template variable through which the
+context reference (C<$c>) can be accessed. In this case, the C<c>, C<base>, and
+C<name> variables are omitted.
+
+C<$template> can be anything that Template::process understands how to
+process, including the name of a template file or a reference to a test string.
+See L<Template::process|Template/process> for a full list of supported formats.
+
+To use the render method outside of your Catalyst app, just pass a undef context.
+This can be useful for tests, for instance.
+
+It is possible to forward to the render method of a TT view from inside Catalyst
+to render page fragments like this:
+
+    my $fragment = $c->forward("View::Web", "render", $template_name, $c->stash->{fragment_data});
+
+=head3 Backwards compatibility note
+
+The render method used to just return the Template::Exception object, rather
+than just throwing it. This is now deprecated and instead the render method
+will throw an exception for new applications.
+
+This behaviour can be activated (and is activated in the default skeleton
+configuration) by using C<< render_die => 1 >>. If you rely on the legacy
+behaviour then a warning will be issued.
+
+To silence this warning, set C<< render_die => 0 >>, but it is recommended
+you adjust your code so that it works with C<< render_die => 1 >>.
+
+In a future release, C<< render_die => 1 >> will become the default if
+unspecified.
+
+=head2 template_vars
+
+Returns a list of keys/values to be used as the catalyst variables in the
+template.
+
+=head2 config
+
+This method allows your view subclass to pass additional settings to
+the TT configuration hash, or to set the options as below:
+
+=head2 paths
+
+The list of paths TT will look for templates in.
+
+=head2 expose_methods
+
+The list of methods in your View class which should be made available to the templates.
+
+For example:
+
+  expose_methods => [qw/uri_for_css/],
+
+  ...
+
+  sub uri_for_css {
+    my ($self, $c, $filename) = @_;
+
+    # additional complexity like checking file exists here
+
+    return $c->uri_for('/static/css/' . $filename);
+  }
+
+Then in the template:
+
+  [% uri_for_css('home.css') %]
+
+=head2 C<CATALYST_VAR>
+
+Allows you to change the name of the Catalyst context object. If set, it will also
+remove the base and name aliases, so you will have access them through <context>.
+
+For example, if CATALYST_VAR has been set to "Catalyst", a template might
+contain:
+
+    The base is [% Catalyst.req.base %]
+    The name is [% Catalyst.config.name %]
+
+=head2 C<TIMER>
+
+If you have configured Catalyst for debug output, and turned on the TIMER setting,
+C<Catalyst::View::TT> will enable profiling of template processing
+(using L<Template::Timer>). This will embed HTML comments in the
+output from your templates, such as:
+
+    <!-- TIMER START: process mainmenu/mainmenu.ttml -->
+    <!-- TIMER START: include mainmenu/cssindex.tt -->
+    <!-- TIMER START: process mainmenu/cssindex.tt -->
+    <!-- TIMER END: process mainmenu/cssindex.tt (0.017279 seconds) -->
+    <!-- TIMER END: include mainmenu/cssindex.tt (0.017401 seconds) -->
+
+    ....
+
+    <!-- TIMER END: process mainmenu/footer.tt (0.003016 seconds) -->
+
+
+=head2 C<TEMPLATE_EXTENSION>
+
+a sufix to add when looking for templates bases on the C<match> method in L<Catalyst::Request>.
+
+For example:
+
+  package MyApp::Controller::Test;
+  sub test : Local { .. }
+
+Would by default look for a template in <root>/test/test. If you set TEMPLATE_EXTENSION to '.tt', it will look for
+<root>/test/test.tt.
+
+=head2 C<PROVIDERS>
+
+Allows you to specify the template providers that TT will use.
+
+    MyApp->config(
+        name     => 'MyApp',
+        root     => MyApp->path_to('root'),
+        'View::Web' => {
+            PROVIDERS => [
+                {
+                    name    => 'DBI',
+                    args    => {
+                        DBI_DSN => 'dbi:DB2:books',
+                        DBI_USER=> 'foo'
+                    }
+                }, {
+                    name    => '_file_',
+                    args    => {}
+                }
+            ]
+        },
+    );
+
+The 'name' key should correspond to the class name of the provider you
+want to use.  The _file_ name is a special case that represents the default
+TT file-based provider.  By default the name is will be prefixed with
+'Template::Provider::'.  You can fully qualify the name by using a unary
+plus:
+
+    name => '+MyApp::Provider::Foo'
+
+You can also specify the 'copy_config' key as an arrayref, to copy those keys
+from the general config, into the config for the provider:
+
+    DEFAULT_ENCODING    => 'utf-8',
+    PROVIDERS => [
+        {
+            name    => 'Encoding',
+            copy_config => [qw(DEFAULT_ENCODING INCLUDE_PATH)]
+        }
+    ]
+
+This can prove useful when you want to use the additional_template_paths hack
+in your own provider, or if you need to use Template::Provider::Encoding
+
+=head2 C<CLASS>
+
+Allows you to specify a custom class to use as the template class instead of
+L<Template>.
+
+    package MyApp::View::Web;
+    use Moose;
+    extends 'Catalyst::View::TT';
+
+    use Template::AutoFilter;
+
+    __PACKAGE__->config({
+        CLASS => 'Template::AutoFilter',
+    });
+
+This is useful if you want to use your own subclasses of L<Template>, so you
+can, for example, prevent XSS by automatically filtering all output through
+C<| html>.
+
+=head2 HELPERS
+
+The L<Catalyst::Helper::View::TT> and
+L<Catalyst::Helper::View::TTSite> helper modules are provided to create
+your view module.  There are invoked by the F<myapp_create.pl> script:
+
+    $ script/myapp_create.pl view Web TT
+
+    $ script/myapp_create.pl view Web TTSite
+
+The L<Catalyst::Helper::View::TT> module creates a basic TT view
+module.  The L<Catalyst::Helper::View::TTSite> module goes a little
+further.  It also creates a default set of templates to get you
+started.  It also configures the view module to locate the templates
+automatically.
+
+=head1 NOTES
+
+If you are using the L<CGI> module inside your templates, you will
+experience that the Catalyst server appears to hang while rendering
+the web page. This is due to the debug mode of L<CGI> (which is
+waiting for input in the terminal window). Turning off the
+debug mode using the "-no_debug" option solves the
+problem, eg.:
+
+    [% USE CGI('-no_debug') %]
+
 =head1 SEE ALSO
 
-L<Catalyst>, L<Template::Manual>
+L<Catalyst>, L<Catalyst::Helper::View::TT>,
+L<Catalyst::Helper::View::TTSite>, L<Template::Manual>
 
-=head1 AUTHOR
+=head1 AUTHORS
 
 Sebastian Riedel, C<sri@cpan.org>
+
 Marcus Ramberg, C<mramberg@cpan.org>
+
 Jesse Sheidlower, C<jester@panix.com>
 
+Andy Wardley, C<abw@cpan.org>
+
+Luke Saunders, C<luke.saunders@gmail.com>
+
 =head1 COPYRIGHT
 
-This program is free software, you can redistribute it and/or modify it 
+This program is free software. You can redistribute it and/or modify it
 under the same terms as Perl itself.
 
 =cut
-
-1;