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+layout: post
+summary: In which we look at Dancer's ecosystem.
+title: The Dancer Ecosystem
+---
+
+Even though it's still a young project, an active community is starting to emerge around <a href="http://search.cpan.org/perldoc?Dancer">Dancer</a>. Some modules start to appear on CPAN and github to add functionalities, or to extend existing ones.
+
+## Templates
+
+By default, Dancer comes with support for two templating systems: <a href="http://search.cpan.org/dist/Template-Toolkit/">Template Toolkit</a> and Dancer::Template::Simple, a small templating engine written by <a href="http://www.sukria.net/">sukria</a>. But support for other templating systems are available:
+
+
+ * <a href="http://search.cpan.org/perldoc?Dancer::Template::Tenjin">Dancer::Template::Tenjin</a> by ido
+ * <a href="http://search.cpan.org/perldoc?Dancer::Template::Sandbox">Dancer::Template::Sandbox</a> by Sam Graham
+ * <a href="http://search.cpan.org/perldoc?Dancer::Template::Tiny">Dancer::Template::Tiny</a> by Sawyer
+ * <a href="http://search.cpan.org/perldoc?Dancer::Template::MicroTemplate">Dancer::Template::MicroTemplate</a> by me
+ * <a href="http://search.cpan.org/perldoc?Dancer::Template::Mason">Dancer::Template::Mason</a> by Yanick Champoux
+ * <a href="http://search.cpan.org/perldoc?Dancer::Template::Haml">Dancer::Template::Haml</a> by David Moreno
+
+## Logger
+
+Out of the box, Dancer only has a simple logging system to write to file, but more logging sytems are available:
+
+<ul>
+<li><a href="http://search.cpan.org/perldoc?Dancer::Logger::Syslog">Dancer::Logger::Syslog</a> by sukria</li>
+<li><a href="http://search.cpan.org/perldoc?Dancer::Logger::LogHandler">Dancer::Logger::LogHandler</a> by me</li>
+<li><a href="http://github.com/franckcuny/Dancer-Logger-PSGI">Dancer::Logger::PSGI</a> by me</li>
+</ul>
+
+The last one is for writing directly your log message via <ah href="http://search.cpan.org/perldoc?Plack">Plack</a>. You can use a middleware like <a href="http://search.cpan.org/~miyagawa/Plack-0.9932/lib/Plack/Middleware/LogDispatch.pm">P::M::LogDispatch</a> or <a href="http://search.cpan.org/~miyagawa/Plack-0.9932/lib/Plack/Middleware/Log4perl.pm">P::M::Log4perl</a> to handle logs for your application. Even better, if you use <a href="http://github.com/miyagawa/Plack-Middleware-ConsoleLogger">P::M::ConsoleLogger</a>, you can have logs from your Dancer application in your javascript console.
+
+## Debug
+
+To debug your application with Plack, you can use the awesome <a href="http://search.cpan.org/perldoc?Plack::Middleware::Debug">Plack::Middleware::Debug</a>. I've writen <a href="http://github.com/franckcuny/dancer-debug">Dancer::Debug</a> (which requires my fork of <a href="http://github.com/franckcuny/Plack-Middleware-Debug">P::M::Debug</a>), a middleware that add panels, with specific informations for Dancer applications.
+
+<a href="http://www.flickr.com/photos/franck_/4535496880/" title="Dancer::Debug middleware by franck.cuny, on Flickr"><img src="http://farm3.static.flickr.com/2750/4535496880_37e5e68a57.jpg" width="500" height="313" alt="Dancer::Debug middleware" /></a>
+
+To activate this middleware, update your app.psgi to make it look like this:
+
+{% highlight perl %}
+my $handler = sub {
+    my $env     = shift;
+    my $request = Dancer::Request->new($env);
+    Dancer->dance($request);
+};
+$handler = builder {
+    enable "Debug", panels => [
+        qw/Dancer::Settings Dancer::Logger Environment Memory
+            ModuleVersions Response Session Parameters Dancer::Version /
+    ];
+    $handler;
+};
+{% endhighlight %}
+
+## Plugins
+
+Dancer has support for plugins since a few version. There is not a lot of plugins at the moment, but this will soon improve. Plugins support is one of the top priorities for the 1.2 release.
+
+### Dancer::Plugin::REST
+
+<a href="http://github.com/sukria/Dancer-Plugin-REST">This one is really nice</a>. This plugin, used with the serialization stuff, allow you to write easily REST application.
+
+{% highlight perl %}
+resource user => get => sub {    # return user where id = params->{id} },
+    create => sub {              # create a new user with params->{user} },
+    delete => sub {          # delete user where id = params->{id} },
+    update => sub {      # update user with params->{user} };
+{% endhighlight %}
+
+And you got the following routes:
+
+ * GET /user/:id
+ * GET /user/:id.:format
+ * POST /user/create
+ * POST /user/create.:format
+ * DELETE /user/:id
+ * DELETE /user/:id.:format
+ * PUT /user/:id
+ * PUT /user/:id.:format
+
+### Dancer::Plugin::Database
+
+<a href="http://github.com/bigpresh/Dancer-Plugin-Database">This plugin</a>, by bigpresh, add the <strong>database</strong> keyword to your app.
+
+{% highlight perl %}
+use Dancer;
+use Dancer::Plugin::Database;
+
+# Calling the database keyword will get you a connected DBI handle:
+get '/widget/view/:id' => sub {
+    my $sth = database->prepare('select * from widgets where id = ?',
+        {}, params->{id});
+    $sth->execute;
+    template 'display_widget', {widget => $sth->fetchrow_hashref};
+};
+{% endhighlight %}
+
+### Dancer::Plugin::SiteMap
+
+<a href="http://search.cpan.org/perldoc?Dancer::Plugin::SiteMap">With this plugin</a>, by James Ronan, a <a href="http://en.wikipedia.org/wiki/Sitemap">sitemap</a> of your application is created.
+
+<blockquote>Plugin module for the Dancer web framwork that automagically adds sitemap routes to the webapp. Currently adds /sitemap and /sitemap.xml where the former is a basic HTML list and the latter is an XML document of URLS.</blockquote>
+
+## you can help! :)
+
+There is still a lot of stuff to do. Don't hesitate to come on #dancer@irc.perl.org to discuss ideas or new features that you would like.