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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Blocks and Layouts in Backdrop CMS</title>
<meta name="description" content="Working with Layouts and Blocks in Backdrop CMS.">
<meta name="author" content="Nate Haug">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:200,300,400,600,700" media="all" />
<link rel="stylesheet" href="reveal.js/css/reveal.css">
<link rel="stylesheet" href="reveal.js/plugin/prism/prism.css">
<link rel="stylesheet" href="reveal.js/plugin/fontawesome/css/font-awesome.min.css">
<link rel="stylesheet" href="reveal.js/css/theme/backdrop.css" id="theme">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'reveal.js/css/print/pdf.css' : 'reveal.js/css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<!--[if lt IE 9]>
<script src="reveal.js/lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h1 style="font-weight: 400">Blocks and Layouts</h1>
<h3>The <strong>all new</strong> system<br />In Backdrop CMS</h3>
<p><a href="http://backdropcms.org">http://backdropcms.org</a></p>
<img src="assets/layouts/images/Drop_lounging_final_black.png" alt="Drop the dragon lounging" style="width: 50%; padding: 15% 5% 2%;" />
</section>
<section>
<section>
<h1>ALL NEW!*</h1>
<img src="assets/layouts/images/chick-in-hand.jpg" style="width: 80%">
</section>
<section>
<p>*But based on the concepts from Panels<br />and Panels Everywhere in Drupal 7</p>
</section>
</section>
<section>
<section>
<h2>Separating the Concept of Themes and Site Structure</h2>
<div class="column-wrapper">
<div><img src="assets/layouts/images/business_theme.png"></div>
<div><i class="fa fa-arrow-right" style="font-size: 5em; margin-top: .5em;"></i></div>
<div><img src="assets/layouts/images/nexus_theme.png"></div>
</div>
</section>
<section>
<h2>Switching Themes</h2>
<div class="column-wrapper">
<div><img src="assets/layouts/images/business_theme_outlined.png"></div>
<div><i class="fa fa-arrow-right" style="font-size: 5em; margin-top: .5em;"></i></div>
<div><img src="assets/layouts/images/nexus_theme_outlined.png"></div>
</div>
</section>
<section>
<h2>In Drupal 7</h2>
<ul>
<li>Switching themes would move over blocks only if regions had identical names.</li>
<li>Any missing regions? Block positions simply discarded.</li>
<li>Site <strong>structure</strong> (block positions) bound tightly to <strong>appearance</strong> (the theme).</li>
</ul>
</section>
<section>
<h2>In Backdrop</h2>
<ul>
<li>Layouts are separated from themes.</li>
<li>Switching themes has no effect on block positions.</li>
<li>Every theme has a responsive layout.</li>
<li>Site structure decoupled from appearance.</li>
</ul>
</section>
<section>
<h2>New Features and Capabilities</h2>
<img src="assets/layouts/images/layout_selection.png" alt="Layout selection options." />
<ul style="font-size: 80%;">
<li>Multiple layouts! Each URL can have a separate set of regions and blocks.</li>
<li>Reuse blocks as many times as you like in different layouts.</li>
<li>Contexts! Blocks that appear only when certain data (a node, user, etc.) is available.</li>
</ul>
</section>
<section>
<h2>Contexts</h2>
<img src="assets/layouts/images/contexts.png" alt="Detecting contexts." />
<ul style="font-size: 80%">
<li>Blocks that require certain data (e.g. a node) can appear only on certain paths.</li>
<li>Block <em>Conditions</em> can toggle based on available data (e.g. content type)</li>
</ul>
</section>
<section>
<h2>Multiple Contexts</h2>
<img src="assets/layouts/images/context_multiple_path.png" alt="A path with multiple contexts." />
<ul style="font-size: 80%">
<li>Multiple contexts (e.g. both a node and user) can exist at the same path.
<li>If multiple contexts of the same type exist, conditions and blocks automatically provide a select list.</li>
</ul>
</section>
<section>
<h2>User Contexts</h2>
<img src="assets/layouts/images/context_multiple_selection.png" alt="User context selection dropdown." />
<ul style="font-size: 80%">
<li>Current user context is always available.</li>
<li>User paths (e.g. <code>user/%</code>) will provide select list for choosing user context.</li>
</ul>
</section>
</section>
<section>
<section>
<h2>Creating New Layout Templates</h2>
<p>Super easy and familiar for themers</p>
</section>
<section>
<h2>Layout directory structure</h2>
<ul class="file-list">
<li>/layouts/fancypants
<ul>
<li class="file">fancypants.info</li>
<li class="file">fancypants.css</li>
<li class="file">preview.png</li>
<li class="file">layout--fancypants.tpl.php</li>
</ul>
</li>
</ul>
</section>
<section>
<h2>fancypants.info</h2>
<pre><code>
name = Fancy pants
type = layout
backdrop = 1.x
regions[header] = Header
regions[top] = Top
regions[content] = Content
regions[sidebar] = Sidebar
regions[footer] = Footer
</code></pre>
</section>
</section>
<section>
<section>
<h1>Blocks</h1>
<p>Improved and more powerful!</p>
</section>
<section>
<h2>Drupal 7: hook_block_info()</h2>
<pre><code class="language-phpx">
function book_block_info() {
$blocks['navigation'] = array(
'info' => t('Book navigation'),
'description' => t('Shows the table of contents for a book.'),
);
return $blocks;
}
</code></pre>
</section>
<section>
<h2>Backdrop: hook_block_info()</h2>
<pre><code class="language-phpx">
function book_block_info() {
$blocks['navigation'] = array(
'info' => t('Book navigation'),
'description' => t('Shows the table of contents for a book.'),
<span style="color: red;">'required contexts' => array('node' => 'node'),</span>
);
return $blocks;
}
</code></pre>
</section>
<section>
<h2>Drupal 7: hook_block_view()</h2>
<pre><code class="language-phpx">
function book_block_view($delta = '') {
$node = menu_get_object();
$block = array();
if ($node) {
$book_mode = variable_get('book_mode', 'all_pages');
$block['subject'] = t('Table of Contents');
$block['content'] = _book_toc($node, $book_mode);
}
}
return $block;
}
</code></pre>
</section>
<section>
<h2>Backdrop: hook_block_view()</h2>
<pre><code class="language-phpx">
function book_block_view($delta = ''<span style="color: red;">, $settings, $contexts</span>) {
$node = <span style="color: red;">$contexts['node']</span>;
$block = array();
if ($node) {
$book_mode = <span style="color: red;">$settings['book_mode']</span>;
$block['subject'] = t('Table of Contents');
$block['content'] = _book_toc($node, $book_mode);
}
}
return $block;
}
</code></pre>
</section>
<section>
<h2>Hate $delta?</h2>
<ul>
<li>In D7, each module's block hooks had to accomodate <em>all</em> blocks within that module.</li>
<li>Really ugly <code>hook_block_configure()</code>, all forms within a single function.</li>
<li>All hooks need to be in .module file, unnecessary code inclusion.</li>
</ul>
</section>
<section>
<h2>Backdrop: Block Classes</h2>
<pre><code class="language-phpx">
function book_block_info() {
$blocks['navigation'] = array(
'info' => t('Book navigation'),
'description' => t('Shows the table of contents for a book.'),
'required contexts' => array('node' => 'node'),
<span style="color: red;">'class' => 'BookNavigationBlock',</span>
);
return $blocks;
}
</code></pre>
</section>
<section>
<h2>Example Block Class</h2>
<pre style="font-size: 70%"><code>
class BookNavigationBlock extends Block {
function getTitle() {
return = t('Book navigation')
}
function getContent() {
return _book_toc($this->contexts['node'], $this->settings['book_mode']);
}
function form($form, &$form_state) {
return _book_configure_form($form, $form_state);
}
}
</code></pre>
<p>All block callbacks within a single class. No other hooks (hook_block_view(), hook_block_configure(), etc. are necessary.</p>
</section>
</section>
<section>
<h2>Upgrading Sites from Drupal 7</h2>
<ul>
<li>Convert the page.tpl.php from your theme into a stand-alone layout template.</li>
<li>Add a line to your settings.php before upgrading:
<pre><code>
state_set('upgrade_layout_name', <span style="color: red;">'your_layout_name'</span>);
</code></pre>
</li>
<li>Run update.php</li>
<li>Blocks will be moved from theme regions into the layout regions with the same name.</li>
<li>Delete the line in settings.php when done.</li>
</ul>
</section>
<section>
<h2>New Features Coming Soon</h2>
<ul>
<li>Position individual fields in separate blocks (<a href="https://github.com/backdrop/backdrop-issues/issues/1100">Issue #1100</a>)</li>
<li>Add arbitrary nodes to a layout (<a href="https://github.com/backdrop/backdrop-issues/issues/1076">Issue #1076</a>)</li>
<li>Relationships (e.g. Node => Author)</li>
<li>Lots of others! <a href="https://github.com/backdrop/backdrop-issues/issues/345">Meta issue #345</a>
</ul>
</section>
<section>
<h1>Questions?</h1>
<p> </p>
<p>
IRC: #backdrop<br>
<a href="http://backdropcms.org">http://backdropcms.org</a><br>
<a href="http://github.com/backdrop/backdrop">github.com/backdrop/backdrop</a><br>
<a href="http://twitter.com/backdropcms">@backdropcms</a>
</p>
</section>
<section>
<h4>Image Credits</h4>
<p><small>
Chick in hand: http://allnightershop.blogspot.com/2013/09/farmlife.html<br>
</small></p>
</section>
</div>
</div>
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