in reply to Challenge: Parse XML Feed for Youtube channel

Here my solution with Mojo::DOM

(my first steps, I'm sure there is room for improvement)

FWIW: I shortened the input in DATA to two entries to keep it short. 

use v5.12;
use warnings;
use Mojo::DOM;

my $data = join "", <DATA>;

my $dom = Mojo::DOM->new($data);

my $title = $dom->at('title')->text;
my $name  = $dom->at('name')->text;

say <<__HTML__;

<h3>$title</h3>
<b>$name</b>

<ul>
@{[
    entries()
]}
</ul>
__HTML__


sub entries {
    my @res;
    for my $entry ( $dom->find('entry')->each ) {

        my $title = $entry->at("title")->text;
        my $href  = $entry->at("link")->attr('href');
        my $desc  = $entry->at('media\:group > media\:description')->t
+ext;

        push @res, <<__HTML__;

    <li>[$href|$title]<p>
       $desc
    </li>
__HTML__
    }
    return @res;
}

[download]
__DATA__
<feed xmlns:yt="http://www.youtube.com/xml/schemas/2015" xmlns:media="
+http://search.yahoo.com/mrss/" xmlns="http://www.w3.org/2005/Atom">
<link rel="self" href="http://www.youtube.com/feeds/videos.xml?playlis
+t_id=PLA9_Hq3zhoFyOpb-U3DMU7OT93dPUdtpE"/>
<id>yt:playlist:PLA9_Hq3zhoFyOpb-U3DMU7OT93dPUdtpE</id>
<yt:playlistId>PLA9_Hq3zhoFyOpb-U3DMU7OT93dPUdtpE</yt:playlistId>
<yt:channelId>UC7y4qaRSb5w2O8cCHOsKZDw</yt:channelId>
<title>TPC 2022 in Houston</title>
<author>
<name>Conference in the Cloud! A Perl and Raku Conf</name>
<uri>https://www.youtube.com/channel/UC7y4qaRSb5w2O8cCHOsKZDw</uri>
</author>
<published>2022-06-22T19:04:37+00:00</published>
<entry>
<id>yt:video:waHAGThlRH8</id>
<yt:videoId>waHAGThlRH8</yt:videoId>
<yt:channelId>UC7y4qaRSb5w2O8cCHOsKZDw</yt:channelId>
<title>Raku -Ofun for Everyone - Daniel Sockwell</title>
<link rel="alternate" href="https://www.youtube.com/watch?v=waHAGThlRH
+8"/>
<author>
<name>Conference in the Cloud! A Perl and Raku Conf</name>
<uri>https://www.youtube.com/channel/UC7y4qaRSb5w2O8cCHOsKZDw</uri>
</author>
<published>2022-06-24T15:57:38+00:00</published>
<updated>2022-06-25T03:36:26+00:00</updated>
<media:group>
<media:title>Raku -Ofun for Everyone - Daniel Sockwell</media:title>
<media:content url="https://www.youtube.com/v/waHAGThlRH8?version=3" t
+ype="application/x-shockwave-flash" width="640" height="390"/>
<media:thumbnail url="https://i4.ytimg.com/vi/waHAGThlRH8/hqdefault.jp
+g" width="480" height="360"/>
<media:description>Rakoons like to say that Raku is -Ofun (optimized f
+or fun). This talk ... YADDA YADDA ... </media:description>
<media:community>
<media:starRating count="14" average="5.00" min="1" max="5"/>
<media:statistics views="278"/>
</media:community>
</media:group>
</entry>
<entry>
<id>yt:video:3BYlObnzuKQ</id>
<yt:videoId>3BYlObnzuKQ</yt:videoId>
<yt:channelId>UC7y4qaRSb5w2O8cCHOsKZDw</yt:channelId>
<title>Introducing Perl Data Types - Will Braswell</title>
<link rel="alternate" href="https://www.youtube.com/watch?v=3BYlObnzuK
+Q"/>
<author>
<name>Conference in the Cloud! A Perl and Raku Conf</name>
<uri>https://www.youtube.com/channel/UC7y4qaRSb5w2O8cCHOsKZDw</uri>
</author>
<published>2022-06-24T16:00:10+00:00</published>
<updated>2022-06-24T16:00:10+00:00</updated>
<media:group>
<media:title>Introducing Perl Data Types - Will Braswell</media:title>
<media:content url="https://www.youtube.com/v/3BYlObnzuKQ?version=3" t
+ype="application/x-shockwave-flash" width="640" height="390"/>
<media:thumbnail url="https://i4.ytimg.com/vi/3BYlObnzuKQ/hqdefault.jp
+g" width="480" height="360"/>
<media:description>Data types are hints to a computer language, tellin
+g the language’s   ... YADDA YADDA ...</media:description>
<media:community>
<media:starRating count="15" average="5.00" min="1" max="5"/>
<media:statistics views="198"/>
</media:community>
</media:group>
</entry>
</feed>

[download]
OUTPUT
    
<h3>TPC 2022 in Houston</h3>
<b>Conference in the Cloud! A Perl and Raku Conf</b>

<ul>

    <li>[https://www.youtube.com/watch?v=waHAGThlRH8|Raku -Ofun for Ev
+eryone - Daniel Sockwell]<p>
       Rakoons like to say that Raku is -Ofun (optimized for fun). Thi
+s talk ... YADDA YADDA ... 
    </li>
 
    <li>[https://www.youtube.com/watch?v=3BYlObnzuKQ|Introducing Perl 
+Data Types - Will Braswell]<p>
       Data types are hints to a computer language, telling the langua
+ge’s   ... YADDA YADDA ...
    </li>

</ul>

[download]

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

update

shortened description to ... YADDA YADDA ... for line wrap

Replies are listed 'Best First'.
Re^2: Challenge: Parse XML Feed for Youtube channel -- Mojo::DOM
by LanX (Saint) on Jun 29, 2022 at 11:05 UTC
    Here a new approach with Mojo::DOM and taking benefit from it's overloading to shorten ->text and ->attr methods away.

    Also using an own rolled "template system" for readability

    The explicit map in the callback might also be easier done with an Mojo::DOM method ... maybe? 

    use v5.12;
use warnings;
use Mojo::DOM;

my $data = join "", <DATA>;

my $dom = Mojo::DOM->new($data);

say &t::page(
   TITLE   => $dom->at('title'),
   NAME    => $dom->at('name'),
   ENTRIES => \&entries,
  );


sub entries {
    map {
        t::entry
            (
             TITLE => $_->at("title"),
             HREF  => $_->at("link")->{href},
             DESC  => $_->at('media\:group > media\:description')
            );
    } $dom->find('entry')->each ;
}


package t;                              # poor man's templates

sub page { my %p = @_; << "____" }

  <h3>$p{ TITLE }</h3>
  <b>$p{ NAME }</b>

  <ul>
  @{[   $p{ ENTRIES }->()  ]}
  </ul>
____


sub entry { my %p = @_; << "____" }

    <li>[$p{ HREF }|$p{ TITLE }]<p>
       $p{ DESC }
    </li>
____



package main;

    [download]
    __DATA__
<feed xmlns:yt="http://www.youtube.com/xml/schemas/2015" xmlns:media="
+http://search.yahoo.com/mrss/" xmlns="http://www.w3.org/2005/Atom">
<link rel="self" href="http://www.youtube.com/feeds/videos.xml?playlis
+t_id=PLA9_Hq3zhoFyOpb-U3DMU7OT93dPUdtpE"/>
<id>yt:playlist:PLA9_Hq3zhoFyOpb-U3DMU7OT93dPUdtpE</id>
<yt:playlistId>PLA9_Hq3zhoFyOpb-U3DMU7OT93dPUdtpE</yt:playlistId>
<yt:channelId>UC7y4qaRSb5w2O8cCHOsKZDw</yt:channelId>
<title>TPC 2022 in Houston</title>
<author>
<name>Conference in the Cloud! A Perl and Raku Conf</name>
<uri>https://www.youtube.com/channel/UC7y4qaRSb5w2O8cCHOsKZDw</uri>
</author>
<published>2022-06-22T19:04:37+00:00</published>
<entry>
<id>yt:video:waHAGThlRH8</id>
<yt:videoId>waHAGThlRH8</yt:videoId>
<yt:channelId>UC7y4qaRSb5w2O8cCHOsKZDw</yt:channelId>
<title>Raku -Ofun for Everyone - Daniel Sockwell</title>
<link rel="alternate" href="https://www.youtube.com/watch?v=waHAGThlRH
+8"/>
<author>
<name>Conference in the Cloud! A Perl and Raku Conf</name>
<uri>https://www.youtube.com/channel/UC7y4qaRSb5w2O8cCHOsKZDw</uri>
</author>
<published>2022-06-24T15:57:38+00:00</published>
<updated>2022-06-25T03:36:26+00:00</updated>
<media:group>
<media:title>Raku -Ofun for Everyone - Daniel Sockwell</media:title>
<media:content url="https://www.youtube.com/v/waHAGThlRH8?version=3" t
+ype="application/x-shockwave-flash" width="640" height="390"/>
<media:thumbnail url="https://i4.ytimg.com/vi/waHAGThlRH8/hqdefault.jp
+g" width="480" height="360"/>
<media:description>Rakoons like to say that Raku is -Ofun (optimized f
+or fun). This talk ... YADDA YADDA ... </media:description>
<media:community>
<media:starRating count="14" average="5.00" min="1" max="5"/>
<media:statistics views="278"/>
</media:community>
</media:group>
</entry>
<entry>
<id>yt:video:3BYlObnzuKQ</id>
<yt:videoId>3BYlObnzuKQ</yt:videoId>
<yt:channelId>UC7y4qaRSb5w2O8cCHOsKZDw</yt:channelId>
<title>Introducing Perl Data Types - Will Braswell</title>
<link rel="alternate" href="https://www.youtube.com/watch?v=3BYlObnzuK
+Q"/>
<author>
<name>Conference in the Cloud! A Perl and Raku Conf</name>
<uri>https://www.youtube.com/channel/UC7y4qaRSb5w2O8cCHOsKZDw</uri>
</author>
<published>2022-06-24T16:00:10+00:00</published>
<updated>2022-06-24T16:00:10+00:00</updated>
<media:group>
<media:title>Introducing Perl Data Types - Will Braswell</media:title>
<media:content url="https://www.youtube.com/v/3BYlObnzuKQ?version=3" t
+ype="application/x-shockwave-flash" width="640" height="390"/>
<media:thumbnail url="https://i4.ytimg.com/vi/3BYlObnzuKQ/hqdefault.jp
+g" width="480" height="360"/>
<media:description>Data types are hints to a computer language, tellin
+g the language’s   ... YADDA YADDA ...</media:description>
<media:community>
<media:starRating count="15" average="5.00" min="1" max="5"/>
<media:statistics views="198"/>
</media:community>
</media:group>
</entry>
</feed>

    [download]

    Cheers Rolf
    (addicted to the Perl Programming Language :)
    Wikisyntax for the Monastery

[reply]
[d/l]
[select]

In Section Seekers of Perl Wisdom