Added featured posts to CMS

code/extensions/BlogFeatureExtension.php

@@ -0,0 +1,41 @@
+<?php
+
+class BlogFeatureExtension extends DataExtension {
+	/**
+	 * @config
+	 *
+	 * @var int
+	 */
+	private static $excluded_feature_posts = 1;
+
+	/**
+	 * @return DataList
+	 */
+	public function getFeaturedBlogPosts() {
+		return BlogPost::get()
+			->filter('ParentID', $this->owner->ID)
+			->filter('IsFeatured', true);
+	}
+
+	/**
+	 * @param DataList $posts
+	 * @param null|string $context Context for these blog posts (e.g 'rss')
+	 *
+	 * @return DataList
+	 */
+	public function updateGetBlogPosts(DataList &$posts, $context = null) {
+		if($context === 'rss') {
+			return;
+		}
+
+		$excluded = (int) Config::inst()->get('BlogFeatureExtension', 'excluded_feature_posts');
+
+		if($excluded > 0) {
+			$taken = $this->getFeaturedBlogPosts()->limit($excluded);
+
+			if ($taken->count()) {
+				$posts = $posts->exclude(array('ID' => $taken->getIDList()));
+			}
+		}
+	}
+}

code/extensions/BlogPostFeatureExtension.php

@@ -0,0 +1,21 @@
+<?php
+
+class BlogPostFeatureExtension extends DataExtension {
+	/**
+	 * @var array
+	 */
+	private static $db = array(
+		'IsFeatured' => 'Boolean',
+	);
+
+	/**
+	 * @inheritdoc
+	 *
+	 * @param FieldList
+	 */
+	public function updateCMSFields(FieldList $fields) {
+		$sidebar = $fields->fieldByName('blog-admin-sidebar');
+
+		$sidebar->insertBefore('PublishDate', new CheckboxField('IsFeatured', 'Mark as featured post'));
+	}
+}

code/model/Blog.php

@@ -471,12 +471,14 @@ class Blog extends Page implements PermissionProvider {
 	/**
 	 * Return blog posts.
 	 *
+	 * @param null|string $context Context for these blog posts (e.g 'rss')
+	 *
 	 * @return DataList of BlogPost objects
 	 */
-	public function getBlogPosts() {
+	public function getBlogPosts($context = null) {
 		$blogPosts = BlogPost::get()->filter('ParentID', $this->ID);
 
-		$this->extend('updateGetBlogPosts', $blogPosts);
+		$this->extend('updateGetBlogPosts', $blogPosts, $context);
 
 		return $blogPosts;
 	}
@@ -964,6 +966,7 @@ class Blog_Controller extends Page_Controller {
 	 */
 	public function PaginatedList() {
 		$allPosts = $this->blogPosts ?: new ArrayList();
+
 		$posts = new PaginatedList($allPosts);
 
 		// Set appropriate page size
@@ -994,7 +997,7 @@ class Blog_Controller extends Page_Controller {
 		 */
 		$dataRecord = $this->dataRecord;
 
-		$this->blogPosts = $dataRecord->getBlogPosts();
+		$this->blogPosts = $dataRecord->getBlogPosts('rss');
 
 		$rss = new RSSFeed($this->blogPosts, $this->Link(), $this->MetaTitle, $this->MetaDescription);
 

code/model/BlogPost.php

@@ -173,7 +173,7 @@ class BlogPost extends Page {
 		$self =& $this;
 
 		$this->beforeUpdateCMSFields(function ($fields) use ($self) {
-			$uploadField = UploadField::create('FeaturedImage', _t('BlogPost.FeaturedImage', 'Featured Image'));
+			$uploadField = UploadField::create('FeaturedImage', _t('BlogPost.FeaturedImage', 'Banner Image'));
 			$uploadField->getValidator()->setAllowedExtensions(array('jpg', 'jpeg', 'png', 'gif'));
 
 			/**
@@ -272,6 +272,8 @@ class BlogPost extends Page {
 				$authorNames
 			)->setTitle('Post Options');
 
+			$options->setName('blog-admin-sidebar');
+
 			$fields->insertBefore($options, 'Root');
 		});
 
@@ -658,7 +660,7 @@ class BlogPost extends Page {
 	public function fieldLabels($includeRelations = true) {
 		$labels = parent::fieldLabels($includeRelations);
 
-		$labels['Title'] = _t('BlogPost.PageTitleLabel', "Post Title");
+		$labels['Title'] = _t('BlogPost.PageTitleLabel', 'Post Title');
 
 		return $labels;
 	}

docs/en/featured-posts.md

@@ -0,0 +1,38 @@
+# Featured posts
+
+You can enable featured posts with the following config:
+
+```yaml
+---
+Name: featured-posts-blog-config
+---
+Blog:
+  extensions:
+    - BlogFeatureExtension
+
+BlogPost:
+  extensions:
+    - BlogPostFeatureExtension
+```
+
+This will enable a checkbox in the CMS, with which you can feature blog posts:
+
+![](_images/featured-posts-cms.png)
+
+By default, the template will show the most recent featured post at the top of the
+list of posts in a blog. This post will be removed from the normal list of blog posts.
+You can increase the number of specially-displayed feature posts by modifying the
+template to show more, and by changing the following config setting:
+
+```
+<% if $CanHaveFeaturedBlogPosts && $FeaturedBlogPosts %>
+	<% loop $FeaturedBlogPosts.Limit(10) %>
+		<% include FeaturedPostSummary %>
+	<% end_loop %>
+<% end_if %>
+```
+
+```yaml
+BlogFeatureExtension:
+  excluded_feature_posts: 10
+```

lang/en.yml

@@ -69,7 +69,7 @@ en:
     CUSTOMSUMMARY: 'Add A Custom Summary'
     Categories: Categories
     DESCRIPTION: 'Generic content page'
-    FeaturedImage: 'Featured Image'
+    FeaturedImage: 'Banner Image'
     PLURALNAME: 'Base Pages'
     PageTitleLabel: 'Post Title'
     PublishDate: 'Publish Date'

templates/Includes/FeaturedPostSummary.ss

@@ -0,0 +1,26 @@
+<div class="post-summary featured">
+	<h2>
+		<a href="$Link" title="<%t Blog.ReadMoreAbout "Read more about '{title}'..." title=$Title %>">
+			<% if $MenuTitle %>$MenuTitle
+			<% else %>$Title<% end_if %>
+		</a>
+	</h2>
+
+	<p class="post-image">
+		<a href="$Link" <%t Blog.ReadMoreAbout "Read more about '{title}'..." title=$Title %>>
+			$FeaturedImage.setWidth(795)
+		</a>
+	</p>
+
+	<% if $Summary %>
+		<p>$Summary
+	<% else %>
+		<p>$Excerpt
+	<% end_if %>
+			<a href="$Link">
+				<%t Blog.ReadMoreAbout "Read more about '{title}'..." title=$Title %>
+			</a>
+		</p>
+
+	<% include EntryMeta %>
+</div>

templates/Layout/Blog.ss

@@ -5,18 +5,18 @@
 	<article>
 		<h1>
 			<% if $ArchiveYear %>
-                <%t Blog.Archive "Archive" %>:
+				<%t Blog.Archive 'Archive' %>:
 				<% if $ArchiveDay %>
 					$ArchiveDate.Nice
 				<% else_if $ArchiveMonth %>
-                    $ArchiveDate.format("F, Y")
+					$ArchiveDate.format('F, Y')
 				<% else %>
-                    $ArchiveDate.format("Y")
+					$ArchiveDate.format('Y')
 				<% end_if %>
 			<% else_if $CurrentTag %>
-                <%t Blog.Tag "Tag" %>: $CurrentTag.Title
+				<%t Blog.Tag 'Tag' %>: $CurrentTag.Title
 			<% else_if $CurrentCategory %>
-                <%t Blog.Category "Category" %>: $CurrentCategory.Title
+				<%t Blog.Category 'Category' %>: $CurrentCategory.Title
 			<% else %>
 				$Title
 			<% end_if %>
@@ -24,12 +24,21 @@
 
 		<div class="content">$Content</div>
 
+		<% if $FeaturedBlogPosts.Exists && $FeaturedBlogPosts.First %>
+			<% with $FeaturedBlogPosts.First %>
+				<% include FeaturedPostSummary %>
+			<% end_with %>
+		<% end_if %>
 		<% if $PaginatedList.Exists %>
 			<% loop $PaginatedList %>
 				<% include PostSummary %>
 			<% end_loop %>
 		<% else %>
-            <p><%t Blog.NoPosts "There are no posts" %></p>
+			<% if $FeaturedBlogPosts.Exists %>
+				<p><%t Blog.NoUnfeaturedPosts 'There are no non-featured posts' %></p>
+			<% else %>
+				<p><%t Blog.NoPosts 'There are no posts' %></p>
+			<% end_if %>
 		<% end_if %>
 	</article>