From 8ddf2e94df70707b458528a437759b96046d3e01 Mon Sep 17 00:00:00 2001
From: Franck Cuny <franck.cuny@gmail.com>
Date: Tue, 26 Nov 2013 10:36:10 -0800
Subject: Huge update.

Moved all posts from textile to markdown. Updated all the CSS and
styles. Added a new page for the resume.
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diff --git a/_posts/2009-05-13-a-simple-feed-aggregator-with-modern-perl-part-4.textile b/_posts/2009-05-13-a-simple-feed-aggregator-with-modern-perl-part-4.textile
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----
-layout: post
-title: A simple feed aggregator with modern Perl - part 4
-category: perl
----
-
-We have the model, the aggregator (and some tests),  now we can do a basic frontend to read our feed. For this I will create a webapp using "catalyst":http://www.catalystframework.org.
-
-"Catalyst::Devel":http://search.cpan.org/perldoc?Catalyst::Devel is required for developping catalyst application, so we will install it first:
-
-{% highlight perl %}
-cpan Catalyst::Devel
-{% endhighlight %}
-
-Now we can create our catalyst application using the helper:
-
-{% highlight perl %}
-catalyst.pl MyFeedReader
-{% endhighlight %}
-
-This command initialise the framework for our application *MyFeedReader*. A number of files are created, like the structure of the MVC directory, some tests, helpers, ...
-
-We start by creating a view, using "TTSite":http://search.cpan.org/perldoc?Catalyst::View::TT. TTSite generate some templates for us, and the configuration for this template. We will also have a basic CSS, a header, footer, etc.
-
-{% highlight bash %}
-cd MyFeedReader
-perl script/myfeedreader_create.pl view TT TTSite
-{% endhighlight %}
-
-TTSite files are under *root/src* and *root/lib*. A *MyAggregator/View/TT.pm* file is also created. We edit it to make it look like this:
-
-{% highlight perl %}
-__PACKAGE__->config({
-    INCLUDE_PATH => [
-        MyFeedReader->path_to( 'root', 'src' ),
-        MyFeedReader->path_to( 'root', 'lib' )
-    ],
-    PRE_PROCESS  => 'config/main',
-    WRAPPER      => 'site/wrapper',
-    ERROR        => 'error.tt2',
-    TIMER        => 0,
-    TEMPLATE_EXTENSION => '.tt2',
-});
-{% endhighlight %}
-
-Now we create our first template, in *root/src/index.tt2*
-
-bq. to <a href="/feed/">your feeds</a>
-
-If you start the application (using _perl script/myfeedreader_server.pl_) and point your browser on http://localhost:3000/, this template will be rendered.
-
-We need two models, one for KiokuDB and another one for MyModel:
-
-*lib/MyFeedReader/Model/KiokuDB.pm*
-
-{% highlight perl %}
-package MyFeedReader::Model::KiokuDB;
-use Moose;
-BEGIN { extends qw(Catalyst::Model::KiokuDB) }
-1;
-{% endhighlight %}
-
-we edit the configuration file (*myfeedreader.conf*), and set the dsn for our kiokudb backend
-
-{% highlight perl %}
-    <Model KiokuDB>
-        dsn dbi:SQLite:../MyAggregator/foo.db
-    </Model>
-{% endhighlight %}
-
-*lib/MyFeedReader/Model/MyModel.pm*
-
-{% highlight perl %}
-package MyFeedReader::Model::MyModel;
-use base qw/Catalyst::Model::DBIC::Schema/;
-1;
-{% endhighlight %}
-
-and the configuration:
-
-{% highlight perl %}
-<Model MyModel>
-    connect_info dbi:SQLite:../MyModel/model.db
-    schema_class MyModel
-</Model>
-{% endhighlight %}
-
-We got our view and our model, we can do the code for the controller. We need 2 controller, one for the feed, and one for the entries. The Feed controller will list them and display entries titles for a given feed. The Entry controller will just display them.
-
-*lib/MyFeedReader/Controller/Feed.pm*
-
-{% highlight perl %}
-package MyFeedReader::Controller::Feed;
-use strict;
-use warnings;
-use parent 'Catalyst::Controller';
-
-__PACKAGE__->config->{namespace} = 'feed';
-
-sub index : Path : Args(0) {
-    my ( $self, $c ) = @_;
-    $c->stash->{feeds}
-        = [ $c->model('MyModel')->resultset('Feed')->search() ];
-}
-
-sub view : Chained('/') : PathPart('feed/view') : Args(1) {
-    my ( $self, $c, $id ) = @_;
-    $c->stash->{feed}
-        = $c->model('MyModel')->resultset('Feed')->find($id);
-}
-
-1;
-{% endhighlight %}
-
-The function *index* list the feeds, while the function *view* list the entries for a give feed. We use the chained action mechanism to dispatch this url, so we can have urls like this _/feed/*_
-
-We create our 2 templates (for index and view):
-
-*root/src/feed/index.tt2*
-
-{% highlight perl %}
-<ul>
-    [% FOREACH feed IN feeds %]
-        <li><a href="/feed/view/[% feed.id %]">[% feed.url %]</a></li>
-    [% END %]
-</ul>
-{% endhighlight %}
-
-*root/src/feed/vew.tt2*
-
-{% highlight perl %}
-<h1>[% feed.url %]</h1>
-
-<h3>entries</h3>
-<ul>
-    [% FOREACH entry IN feed.entries %]
-        <li><a href="/entry/[% entry.id %]">[% entry.permalink %]</a></li>
-    [% END %]
-</ul>
-{% endhighlight %}
-
-If you point your browser to
-
-bc. http://localhost:3000/feed/
-
-you will see this:
-
-!/static/imgs/list_feed.png(list feeds)!
-
-Now the controller for displaying the entries:
-
-{% highlight perl %}
-package MyFeedReader::Controller::Entry;
-use strict;
-use warnings;
-use MyAggregator::Entry;
-use parent 'Catalyst::Controller';
-
-__PACKAGE__->config->{namespace} = 'entry';
-
-sub view : Chained('/') : PathPart('entry') : Args(1) {
-    my ( $self, $c, $id ) = @_;
-    $c->stash->{entry} = $c->model('KiokuDB')->lookup($id);
-}
-
-1;
-{% endhighlight %}
-
-The function *view* fetch an entry from the kiokudb backend, and store it in the stash, so we can use it in our template.
-
-*root/src/entry/view.tt2*
-
-{% highlight perl %}
-<h1><a href="[% entry.permalink %]">[% entry.title %]</a></h1>
-<span>Posted [% entry.date %] by [% entry.author %]</span>
-<div id="content">
-    [% entry.content %]
-</div>
-{% endhighlight %}
-
-If you point your browser to an entry (something like *http://localhost:3000/entry/somesha256value*), you will see an entry:
-
-!/static/imgs/show_entry.png(show entry)!
-
-Et voila, we are done with a really basic feed reader. You can add methods to add or delete feed, mark an entry as read, ...
-
-"The code is available on github":http://github.com/franckcuny/ironman-myfeedreader/tree/master
-- 
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