planet.pdf.html

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   <title>New Horizons - Build Your Own (Static) Planet News Site w/ Pluto (and Ruby)</title>
   
   

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<div class="presentation">

<div class='slide '>


<!-- _S9SLIDE_ -->
<h1 id="agenda">Agenda</h1>

<ul>
  <li>Lets Build a Planet News Site in Ruby
    <ul>
      <li>What’s a Web Feed?</li>
    </ul>
  </li>
  <li>Reading Web Feeds in Ruby - Options
    <ul>
      <li>Module RSS - Standard (Built-In) Web Feed Reader &amp; Writer Library</li>
      <li>Hello, feedparser gem!</li>
    </ul>
  </li>
  <li>Planet Feed Reader in 20 Lines of Ruby</li>
  <li>What’s Planet Pluto?
    <ul>
      <li>Planet Ruby - Step 1 - Add Your Web Feeds</li>
      <li>Planet Ruby - Step 2 - Build Your Planet News Site</li>
    </ul>
  </li>
  <li>OpenStreetMap Blogs (blogs.openstreetmap.org)
    <ul>
      <li>Step 1 - Add Your Web Feeds</li>
      <li>Step 2 - Build Planet News Site</li>
      <li>How-to Auto-Update Planet News Site Every Hour</li>
      <li>Design Your Own Templates</li>
    </ul>
  </li>
  <li>Design Your Own Planet Pluto Templates / Themes</li>
  <li>Planet Pluto - Stay Static or Go Dynamic?</li>
  <li>Jekyll Planet Pluto Addon / Importer</li>
  <li>Bonus
    <ul>
      <li>Planet Ruby - What’s Happening in the Ruby Universe?</li>
      <li>Planet Pluto - What’s Next? Plans &amp; Ideas</li>
      <li>Tip - Add Profile Pics (Hacker Gotchis)</li>
    </ul>
  </li>
</ul>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="lets-build-a-planet-news-site-in-ruby">Lets Build a Planet News Site in Ruby</h1>

<p>What’s a web feed?</p>

<p>Example: <a href="https://xkcd.com/atom.xml">xkcd.com/atom.xml</a></p>

<pre><code>&lt;feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en"&gt;
  &lt;title&gt;xkcd.com&lt;/title&gt;
  &lt;link href="https://xkcd.com/" rel="alternate"/&gt;
  &lt;id&gt;https://xkcd.com/&lt;/id&gt;
  &lt;updated&gt;2017-04-05T00:00:00Z&lt;/updated&gt;
  &lt;entry&gt;
    &lt;title&gt;Security Advice&lt;/title&gt;
    &lt;link href="https://xkcd.com/1820/" rel="alternate"/&gt;
    &lt;updated&gt;2017-04-05T00:00:00Z&lt;/updated&gt;
    &lt;id&gt;https://xkcd.com/1820/&lt;/id&gt;
    &lt;summary type="html"&gt;
      &lt;img src="https://imgs.xkcd.com/comics/security_advice.png"
           title="Never give your password or bank account number..." /&gt;
    &lt;/summary&gt;
  &lt;/entry&gt;
  ...
&lt;/feed&gt;
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="lets-welcome-the-microservices-vienna-meetup">Let’s Welcome the Microservices Vienna Meetup</h1>

<p>What’s a web feed?  - Architecture Astronauts Edition ;-)</p>

<p>The Facebook news feed is a centralized monolith!</p>

<p>A planet news feed is a distributed (micro)service architecture!</p>

<ul>
  <li>Uses publish &amp; subscribe (PubSub) channels</li>
  <li>Uses open formats with hypermedia as the engine of application state (HATEOS)</li>
  <li>Uses evolutionary future forward design</li>
  <li>Runs on Amazon S3 or other “server-less” storage (micro)services</li>
  <li>100 % certified representational state transfer (REST) style e.g. works with the web e.g. HTTP, proxies, caches, etc. not yet another abstraction layer or strategy factory</li>
  <li>Free vendor-neutral royalty-free industry standard</li>
</ul>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="reading-web-feeds-in-ruby---options">Reading Web Feeds in Ruby - Options</h1>

<p>Module RSS - Standard (built-In) web feed reader &amp; writer library.
The doc reads:</p>

<blockquote>
  <p>RSS reading and writing</p>
</blockquote>

<blockquote>
  <p>Really Simple Syndication (RSS) is a family of formats that describe ‘feeds,’
specially constructed XML documents that allow an interested person
to subscribe and receive updates from a particular web service.
This portion of the standard library provides tooling to read and create these feeds.</p>

  <p>The standard library supports RSS 0.91, 1.0, 2.0, and Atom, a related format.
Here are some links to the standards documents for these formats:</p>

  <ul>
    <li>RSS
      <ul>
        <li>0.9.1</li>
        <li>1.0</li>
        <li>2.0</li>
      </ul>
    </li>
    <li>Atom</li>
  </ul>
</blockquote>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="module-rss---standard-built-in-web-feed-reader--writer-library">Module RSS - Standard (Built-In) Web Feed Reader &amp; Writer Library</h1>

<pre><code class="language-ruby">require 'rss'
require 'open-uri'

xml = open( 'https://xkcd.com/atom.xml' ).read

feed = RSS::Parser.parse( xml )

puts "feed.class.name: #{feed.class.name}"

puts "== #{feed.title.content} =="

feed.entries.each do |entry|
  puts "- #{entry.title.content}"
  puts "  (#{entry.link.href})"
  puts
end
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="module-rss---standard-built-in-web-feed-reader--writer-library-cont">Module RSS - Standard (Built-In) Web Feed Reader &amp; Writer Library (Cont.)</h1>

<p>Prints:</p>

<pre><code>feed.class.name: RSS::Atom::Feed

== xkcd.com ==

- Security Advice
  (https://xkcd.com/1820/)

- Sweet 16
  (https://xkcd.com/1819/)
...
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="reading-web-feeds-in-ruby---more-options---why">Reading Web Feeds in Ruby - More Options - Why?</h1>

<p>What’s the difference?</p>

<table>
  <thead>
    <tr>
      <th>RSS</th>
      <th>ATOM</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><code>feed.channel.title</code></td>
      <td><code>feed.title.content</code></td>
    </tr>
    <tr>
      <td><code>item.title</code></td>
      <td><code>entry.title.content</code></td>
    </tr>
    <tr>
      <td><code>item.link</code></td>
      <td><code>entry.link.href</code></td>
    </tr>
  </tbody>
</table>

<p>Let’s built a “universal” uniform reader</p>

<table>
  <thead>
    <tr>
      <th>RSS or ATOM</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><code>feed.title</code></td>
    </tr>
    <tr>
      <td><code>item.title</code></td>
    </tr>
    <tr>
      <td><code>item.url</code></td>
    </tr>
  </tbody>
</table>

<p>and so on.</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="hello-feedparser-gem">Hello, feedparser gem!</h1>

<p>A “universal” web feed parser and normalizer (Atom, RSS 2.0, etc.)
library in ruby.</p>

<p>by Gerald Bauer et al (★32) -
gem: <a href="https://rubygems.org/gems/feedparser"><code>feedparser</code></a>,
github: <a href="https://github.com/feedparser/feedparser"><code>feedparser/feedparser</code></a></p>

<p><img src="i/feed-models.png" alt="" /></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="reading-web-feeds-in-ruby">Reading Web Feeds in Ruby</h1>

<pre><code class="language-ruby">require 'feedparser'
require 'open-uri'

xml = open( 'https://xkcd.com/rss.xml' ).read
# xml = open( 'https://xkcd.com/atom.xml' ).read

feed = FeedParser::Parser.parse( xml )

puts "feed.class.name: #{feed.class.name}"

puts "== #{feed.title} =="

feed.items.each do |item|
  puts "- #{item.title}"
  puts "  (#{item.url})"
  puts
end
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="reading-web-feeds-in-ruby-cont">Reading Web Feeds in Ruby (Cont.)</h1>

<p>Prints:</p>

<pre><code>feed.class.name: FeedParser::Feed

== xkcd.com ==

- Security Advice
  (https://xkcd.com/1820/)

- Sweet 16
  (https://xkcd.com/1819/)
...
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-feed-reader-in-20-lines-of-ruby">Planet Feed Reader in 20 Lines of Ruby</h1>

<p><code>planet.rb</code>:</p>

<pre><code class="language-ruby">require 'open-uri'
require 'feedparser'
require 'erb'

# step 1) read a list of web feeds

FEED_URLS = [
  'http://vienna-rb.at/atom.xml',
  'http://weblog.rubyonrails.org/feed/atom.xml',
  'http://www.ruby-lang.org/en/feeds/news.rss'
]

items = []

FEED_URLS.each do |url|
  feed = FeedParser::Parser.parse( open( url ).read )
  items += feed.items
end

# step 2) mix up all postings in a new page

FEED_ITEM_TEMPLATE = &lt;&lt;EOS
&lt;% items.each do |item| %&gt;
  &lt;div class="item"&gt;
    &lt;h2&gt;&lt;a href="&lt;%= item.url %&gt;"&gt;&lt;%= item.title %&gt;&lt;/a&gt;&lt;/h2&gt;
    &lt;div&gt;&lt;%= item.content %&gt;&lt;/div&gt;
  &lt;/div&gt;
&lt;% end %&gt;
EOS

puts ERB.new( FEED_ITEM_TEMPLATE ).result
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-feed-reader-in-20-lines-of-ruby-cont">Planet Feed Reader in 20 Lines of Ruby (Cont.)</h1>

<p>Run the script:</p>

<pre><code>$ ruby ./planet.rb      
</code></pre>

<p>Prints:</p>

<pre><code>&lt;div class="item"&gt;
  &lt;h2&gt;&lt;a href="http://vienna-rb.at/blog/2016/11/06/picks/"&gt;Picks / what the vienna.rb team thinks is worth sharing this week&lt;/a&gt;&lt;/h2&gt;
  &lt;div&gt;
   &lt;h3&gt;6/11 Picks!!&lt;/h3&gt;
   &lt;p&gt;In a series on this website we'll entertain YOU with our picks...
 ...
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="production-ready-real-world-planet-feed-reader-almost">Production-Ready? Real-World Planet Feed Reader? Almost</h1>

<p>(1) Cache (Store) Feed Items in Database</p>

<p>e.g. lets you use <code>items.latest.limit(24)</code> and so on (SQL queries)</p>

<p>(2) Use Conditional GETs When Fetching Feeds</p>

<p>e.g. use HTTP Header <code>If-Modified-Since</code> for last modified dates and <code>If-None-Match</code> for etags</p>

<p>(3) Schedule Feed Auto Update Every Hour</p>

<p>e.g. use <code>rake update</code>  w/ cron job, for example</p>

<p>And so on. All goodies (and much more) ready for (re)use in pluto gem.</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="whats-planet-pluto">What’s Planet Pluto?</h1>

<p>A <a href="http://feedreader.github.io">free planet site generator</a> in ruby (Yes!)
that lets you build web pages from published web feeds.</p>

<p>by Gerald Bauer et al (★47) -
gem: <a href="https://rubygems.org/gems/pluto"><code>pluto</code></a>,
github: <a href="https://github.com/feedreader/pluto"><code>feedreader/pluto</code></a></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-pluto-trivia-quiz-i">Planet Pluto Trivia Quiz I</h1>

<p>Q: The Mass of (Former) Planet Pluto is … ?</p>

<ul>
  <li>(A) 7 Earths</li>
  <li>(B) 1 Earth</li>
  <li>(C) 0.01 (1/100) Earth</li>
  <li>(D) 0.002 (1/500) Earth</li>
</ul>

<p>Pluto Facts - Did you know?</p>

<p>Pluto was discovered in 1930 and the named after the god of the underworld
proposed by a eleven-year-old schoolgirl in Oxford, England,
who was interested in classical mythology.
Thanks Venetia Burney!</p>

<p><img src="i/plutoplanet.png" alt="" /></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-ruby---step-1---add-your-web-feeds">Planet Ruby - Step 1 - Add Your Web Feeds</h1>

<p>Example - <code>planet.ini</code>:</p>

<pre><code>title = Planet Ruby

[rubylang]
  title = Ruby Lang News
  link  = http://www.ruby-lang.org/en/news
  feed  = http://www.ruby-lang.org/en/feeds/news.rss

[rubyonrails]
  title = Ruby on Rails News
  link  = http://weblog.rubyonrails.org
  feed  = http://weblog.rubyonrails.org/feed/atom.xml

[viennarb]
  title = Vienna.rb News
  link  = http://vienna-rb.at
  feed  = http://vienna-rb.at/atom.xml
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-ruby---step-2---build-your-planet-news-site">Planet Ruby - Step 2 - Build Your Planet News Site</h1>

<p>Use the <code>pluto</code> command line tool and pass in the planet configuration file.
Example:</p>

<pre><code>$ pluto build planet.ini
</code></pre>

<p>This will</p>

<p>1) fetch all feeds listed in <code>planet.ini</code> and</p>

<p>2) store all entries in a local database, that is, <code>planet.db</code> in your working folder and</p>

<p>3) generate a planet web page, that is, <code>planet.html</code> using the blank template pack in your working folder using all feed entries from the local database.</p>

<p>Open up <code>planet.html</code> to see your planet web page. Voila!</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-pluto-trivia-quiz-ii">Planet Pluto Trivia Quiz II</h1>

<p>Q: How big is the (former) planet Pluto
in km (circumference, that is, 2pi × r)?</p>

<ul>
  <li>(A) 150 000 km</li>
  <li>(B) 40 000 km</li>
  <li>(C) 11 000 km</li>
  <li>(D) 7 000 km</li>
</ul>

<p>See <a href="https://solarsystem.nasa.gov/planets/">Planets @ NASA Solar System</a></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="openstreetmap-blogs-blogsopenstreetmaporg">OpenStreetMap Blogs (<code>blogs.openstreetmap.org</code>)</h1>

<p><a href="https://blogs.openstreetmap.org"><code>blogs.openstreetmap.org</code></a></p>

<p><img src="i/osmblogs1.png" alt="" /></p>

<p>or</p>

<p><img src="i/osmblogs2.png" alt="" /></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="openstreetmap-blogs---step-1---add-your-web-feeds">OpenStreetMap Blogs - Step 1 - Add Your Web Feeds</h1>

<p>Example - <code>planet.ini</code></p>

<pre><code>title = OpenStreetMap Blogs

[shaun_mcdonald]
  title = Shaun McDonald
  link = http://blog.shaunmcdonald.me.uk/
  feed = http://blog.shaunmcdonald.me.uk/feed/
  twitter = smsm1
[mapbox]
  title = Mapbox Blog
  link = https://www.mapbox.com/blog/
  feed = https://www.mapbox.com/blog/blog.rss
  twitter = mapbox
[osm_diaries]
  title = OpenStreetMap User's Diaries
  link = http://www.openstreetmap.org/diary/
  feed = http://www.openstreetmap.org/diary/rss
...
</code></pre>

<p>(Source: <a href="https://github.com/gravitystorm/blogs.osm.org/blob/master/planet.ini">gravitystorm/blogs.osm.org/planet.ini</a>)</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="openstreetmap-blogs---step-2---build-planet-news-site">OpenStreetMap Blogs - Step 2 - Build Planet News Site</h1>

<p>Again use the <code>pluto</code> command line tool and pass in the planet configuration file.
Example:</p>

<pre><code>$ pluto build planet.ini -t osm -o build
</code></pre>

<p>What’s news?</p>

<p>The <code>-t/--template</code> option lets you use your own templates / theme
e.g. use the <code>osm</code> template pack.</p>

<p>The <code>-o/--output</code> option lets you define the output folder (default to <code>./</code>)
and now uses the <code>./build</code> folder.</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="openstreetmap-blogs---how-to-auto-update-planet-news-site-every-hour">OpenStreetMap Blogs - How-to Auto-Update Planet News Site Every Hour</h1>

<p>Rerun the command:</p>

<pre><code>$ pluto build planet.ini -t osm -o build
</code></pre>

<p>That’s it ;-)  The pluto feed fetcher will
use conditional HTTP get requests and content hash checks for web feeds
etc.</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="pluto-trivia-quiz-iii">Pluto Trivia Quiz III</h1>

<p>Q: Pluto the Pup is the pet of …?</p>

<ul>
  <li>(A) Donald Duck</li>
  <li>(B) Daisy Duck</li>
  <li>(C) Mickey Mouse</li>
  <li>(D) Minnie Mouse</li>
</ul>

<p><img src="i/plutothepup.png" alt="" /></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="openstreetmap-blogs---design-your-own-templates">OpenStreetMap Blogs - Design Your Own Templates</h1>

<p>Let’s welcome embedded ruby (ERB).</p>

<p>Example - <code>opml.xml.erb</code>:</p>

<pre><code>&lt;opml version="1.1"&gt;
  &lt;head&gt;
    &lt;title&gt;&lt;%= site.title %&gt;&lt;/title&gt;
    &lt;dateModified&gt;&lt;%= site.updated %&gt;&lt;/dateModified&gt;
    &lt;ownerName&gt;OpenStreetMap&lt;/ownerName&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;% site.feeds.each do |feed| %&gt;
    &lt;outline type="rss" text="&lt;%= feed.title %&gt;"
                        xmlUrl="&lt;%= feed.url %&gt;"
                        title="&lt;%= feed.title %&gt;"/&gt;
    &lt;% end %&gt;
  &lt;/body&gt;
&lt;/opml&gt;
</code></pre>

<p>(Source: <a href="https://github.com/gravitystorm/blogs.osm.org/blob/master/theme/opml.xml.erb">gravitystorm/blogs.osm.org/theme/opml.xml.erb</a>)</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-pluto-trivia-quiz-iv">Planet Pluto Trivia Quiz IV</h1>

<p>Q: Cosmographia Trivia Quiz - How many planets in our system?</p>

<ul>
  <li>(A) Planet 7 w/ Moon &amp; Sun
    <ul>
      <li>Moon Mercury Venus Sun Mars Jupiter Saturn</li>
    </ul>
  </li>
  <li>(B) Planet 9 (I) w/ Pluto
    <ul>
      <li>Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto</li>
    </ul>
  </li>
  <li>(C) Planet 8 w/o Pluto
    <ul>
      <li>Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune</li>
    </ul>
  </li>
  <li>(D) Planet 9 (II) w/ Hypothetical Planet X
    <ul>
      <li>Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Planet X</li>
    </ul>
  </li>
</ul>

<p>Planet Nine Facts - A New Planet?</p>

<blockquote>
  <p>Astronomers used mathematics to predict the existence of the object
they nicknamed “Planet Nine.”</p>

  <p>“Planet Nine,” could have a mass about 10 times that of Earth and
orbit about 20 times farther from the sun on average than Neptune. It may take between 10,000 and
20,000 Earth years to make one full orbit around the sun.</p>
</blockquote>

<p>(Source: <a href="https://solarsystem.nasa.gov/planets/">Planets @ NASA Solar System</a>)</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="design-your-own-planet-pluto-templates--themes">Design Your Own Planet Pluto Templates / Themes</h1>

<p><img src="i/pluto-models.png" alt="" /></p>

<p>A bunch of planet starter templates / themes @ <a href="https://github.com/planet-templates"><code>planet-themes</code></a> org.</p>

<ul>
  <li>Digest</li>
  <li>Hacker</li>
  <li>Forty</li>
  <li>News</li>
  <li>Paper</li>
  <li>Top</li>
  <li>and more</li>
</ul>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-pluto---stay-static-or-go-dynamic">Planet Pluto - Stay Static or Go Dynamic?</h1>

<p>What’s Pluto Live?</p>

<p>A collection of (dynamic) web apps (e.g. sinatra, rails, etc.)
using the pluto machinery @ <a href="https://github.com/plutolive"><code>plutolive</code></a>
incl. live, live.starter, and admin.</p>

<p><code>planet.rb</code>:</p>

<pre><code>class Planet &lt; Sinatra::Base

  include Pluto::Models   # Models e.g. Feed, Item, Site, etc.

  get '/' do
    erb :index
  end

end
</code></pre>

<p><code>index.erb</code>:</p>

<pre><code>&lt;% site.items.latest.limit(24).each do |item| %&gt;

  &lt;div class='item'&gt;

    &lt;h2 class='item-title'&gt;
     &lt;%= link_to item.title, item.url %&gt;
    &lt;/h2&gt;

    &lt;div class='item-content'&gt;
     &lt;%= item.content %&gt;
    &lt;/div&gt;
  &lt;/div&gt;

&lt;% end %&gt;
</code></pre>

<p>See the <a href="https://github.com/plutolive/pluto.live.starter">pluto.live.starter</a> repo for more.</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-pluto-trivia-quiz-v">Planet Pluto Trivia Quiz V</h1>

<p>Q: What planet scripts do NOT run on ruby?</p>

<ul>
  <li>(A) Planet Mars – by Sam Ruby et al</li>
  <li>(B) Planet Venus – by Sam Ruby et al</li>
  <li>(C) Planet Pluto – by Gerald Bauer et al</li>
  <li>(D) Planet Uranus – by Marvin Gülker et al</li>
</ul>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="one-more-thing-----jekyll-planet-pluto-addon--importer">One More Thing ;-) - Jekyll Planet Pluto Addon / Importer</h1>

<p>Let’s you (auto-)add articles / blog posts to your
(static) website. Example:</p>

<pre><code>&lt;p&gt;Happy Friday everyone!&lt;/p&gt;

&lt;p&gt;The Rails team has just released &lt;a href="http://rubygems.org/gems/rails/versions/5.2.0.rc3"&gt;
the third Release Candidate of Rails 5.2.0&lt;/a&gt;
today. For an overview of all the major changes in the 5.2 series, please refer
to the &lt;a href="http://edgeguides.rubyonrails.org/5_2_release_notes.html"&gt;release notes&lt;/a&gt;.&lt;/p&gt;
...
</code></pre>

<p>becomes <code>_posts/2017-06-13-ann_rails_520rc3_has_been_released.html</code>:</p>

<pre><code>---
title:      "[ANN] Rails 5.2.0.rc3 has been released!"
created_at: 2017-06-13 03:00:00 UTC
autor:      Ruby on Rails Blog
layout:     post
---
&lt;p&gt;Happy Friday everyone!&lt;/p&gt;

&lt;p&gt;The Rails team has just released &lt;a href="http://rubygems.org/gems/rails/versions/5.2.0.rc3"&gt;
the third Release Candidate of Rails 5.2.0&lt;/a&gt;
today. For an overview of all the major changes in the 5.2 series, please refer
to the &lt;a href="http://edgeguides.rubyonrails.org/5_2_release_notes.html"&gt;release notes&lt;/a&gt;.&lt;/p&gt;
...
</code></pre>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="thanks">Thanks</h1>

<p>Questions? Comments?</p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-pluto-trivia-quiz-vi">Planet Pluto Trivia Quiz VI</h1>

<p>Q:  How many moons / natural satellites has Pluto?</p>

<ul>
  <li>(A) 0 - Zero</li>
  <li>(B) 1 - One</li>
  <li>(C) 3 - Three</li>
  <li>(D) 5 - Five</li>
</ul>

<p>Pluto Facts - Did you know?  Identity Crisis</p>

<blockquote>
  <p>Pluto has five known moons: Charon (the largest, with a diameter just over half that of Pluto),
Styx, Nix, Kerberos, and Hydra.
Pluto and Charon are sometimes considered a binary system because the barycenter of their orbits
does not lie within either body. The  International Astronomical Union (IAU) has not formalized
a definition for binary dwarf planets,
and Charon is officially classified as a moon of Pluto.</p>
</blockquote>

<p>(Source: <a href="https://en.wikipedia.org/wiki/Pluto">Pluto - Wikipedia</a>)</p>

<p><img src="i/plutomoons.jpg" alt="" /></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="bonus--planet-ruby---whats-news">Bonus:  Planet Ruby - What’s News?</h1>

<ul>
  <li>Planet Ruby
    <ul>
      <li>150+ Sources; see <a href="http://planetruby.herokuapp.com/sources"><code>planetruby/sources</code></a></li>
    </ul>
  </li>
  <li>Planet Vienna.rb / Austria  – Relaunch / Update - Why? Why not?</li>
</ul>

<!-- -->
<ul>
  <li>Rubyland News                  - by Jonathan Rochkind (runs on rubyland.news rails app)</li>
  <li>Planet Ruby (Deutsch/German)   - by Marvin Gülker (runs on planet uranus script)</li>
</ul>

<!-- -->
<ul>
  <li>Ruby Flow  (link blog)</li>
  <li>Ruby Weekly  (newsletter)</li>
  <li>Green Ruby News  (newsletter)</li>
</ul>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="bonus-planet-pluto---whats-next-plans--ideas">Bonus: Planet Pluto - What’s Next? Plans &amp; Ideas</h1>

<p>Some ideas:</p>

<ul>
  <li>Use Liquid for (Jekyll-Compatible) Templates</li>
  <li>Bundle Pluto Admin into a gem and command line tool (starts a local server e.g. $ <code>plutoweb</code>)</li>
  <li>New Planet Config Format - use Awesome Blogs pages in markdown</li>
</ul>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="bonus-tip---add-profile-pics-hacker-gotchis">Bonus: Tip - Add Profile Pics (Hacker Gotchis)</h1>

<p>Lesson from Facebook (Social Networks)?
Add Profile Pics. Example:</p>

<p>Planet Gnome (<a href="http://planet.gnome.org"><code>planet.gnome.org</code></a>) - First Planet Planet Still Running Today</p>

<p>See <a href="http://planet.gnome.org/heads/">Hackergotchis</a>:</p>

<p><img src="i/hackergotchis.png" alt="" /></p>


</div>
<div class='slide '>
<!-- _S9SLIDE_ -->
<h1 id="planet-pluto-trivia-quiz-vii">Planet Pluto Trivia Quiz VII</h1>

<p>Q: What is NOT a classification of Pluto?</p>

<ul>
  <li>(A) King of the Kuiper Belt</li>
  <li>(B) Outer Solar System Object</li>
  <li>(C) Trans-Neptunian Object</li>
  <li>(D) Planet</li>
</ul>

<blockquote>
  <p>I think the whole Solar System joins me in saying,”Good riddance!” to that whiney little ball of ice.
That trespasser better stop spewing nonsense from those cryovolcanoes of his,
or I’ll kick his night side all the way to Alpha Centauri.</p>

  <p>– Neptune, Pluto Nemesis</p>
</blockquote>

<p>(Source: <a href="http://www.theplutodiaries.com">The Pluto Diaries - confessions of a former ninth planet</a>)</p>
</div>


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