IMPR: Add blog authors widget

src/Widgets/BlogAuthorsWidget.php

@@ -0,0 +1,149 @@
+<?php
+
+namespace A2nt\CMSNiceties\Widgets;
+
+use SilverStripe\Blog\Model\Blog;
+use SilverStripe\Blog\Model\BlogPost;
+use SilverStripe\Core\Convert;
+use SilverStripe\Forms\DropdownField;
+use SilverStripe\Forms\FieldList;
+use SilverStripe\Forms\NumericField;
+use SilverStripe\ORM\ArrayList;
+use SilverStripe\Security\Member;
+use SilverStripe\Widgets\Model\Widget;
+
+if (!class_exists(Widget::class)) {
+    return;
+}
+
+/**
+ * Class \A2nt\CMSNiceties\Widgets\BannerWidget
+ *
+ * @property int $ImageID
+ * @property int $LinkID
+ * @method \SilverStripe\Assets\Image Image()
+ * @method \Sheadawson\Linkable\Models\Link Link()
+ */
+class BlogAuthorsWidget extends Widget
+{
+    private static $title = 'Blog Authors';
+    private static $cmsTitle = 'Authors';
+    private static $description = 'Shows banner Blog Authors.';
+    private static $table_name = 'BlogAuthorsWidget';
+
+    private static $db = [
+        'Limit' => 'Int',
+        'Order' => 'Varchar',
+        'Direction' => 'Varchar',
+    ];
+
+    private static $has_one = [
+        'Blog' => Blog::class
+    ];
+
+    public function getCMSFields()
+    {
+        $this->beforeUpdateCMSFields(function (FieldList $fields) {
+            $fields[] = DropdownField::create(
+                'BlogID',
+                _t(__CLASS__ . '.Blog', 'Blog'),
+                Blog::get()->map()
+            );
+
+            $fields[] = NumericField::create(
+                'Limit',
+                _t(__CLASS__ . '.Limit', 'Limit'),
+                0
+            )
+                ->setDescription(
+                    _t(
+                        __CLASS__ . '.Limit_Description',
+                        'Limit the number of tags shown by this widget (set to 0 to show all tags).'
+                    )
+                )
+                ->setMaxLength(3);
+
+            $fields[] = DropdownField::create(
+                'Order',
+                _t(__CLASS__ . '.Sort', 'Sort'),
+                [
+                    'FirstName' => 'First Name',
+                    'Surname' => 'Last Name',
+                    'LastEdited' => 'Updated',
+                ],
+            )
+                ->setDescription(
+                    _t(__CLASS__ . '.Sort_Description', 'Change the order of tags shown by this widget.')
+                );
+
+            $fields[] = DropdownField::create(
+                'Direction',
+                _t(__CLASS__ . '.Direction', 'Direction'),
+                ['ASC' => 'Ascending', 'DESC' => 'Descending']
+            )
+                ->setDescription(
+                    _t(
+                        __CLASS__ . '.Direction_Description',
+                        'Change the direction of ordering of tags shown by this widget.'
+                    )
+                );
+        });
+
+        return parent::getCMSFields();
+    }
+
+    /**
+     * @return DataList
+     */
+    public function getAuthors()
+    {
+        $parent = $this->Blog();
+
+        if (!$parent) {
+            return [];
+        }
+
+        $blogID = $parent->ID;
+
+        $posts = BlogPost::get()
+            ->filter('ParentID', $blogID);
+
+        $authorIDs = [];
+        foreach ($posts as $post) {
+            $authorIDs = array_merge(
+                $authorIDs,
+                array_keys(
+                    $post->Authors()
+                        ->map()
+                        ->toArray()
+                )
+            );
+        }
+
+        $authorIDs = array_unique($authorIDs);
+        $query = Member::get()->filter(['ID' => $authorIDs]);
+
+        if ($this->Limit) {
+            $query = $query->limit(Convert::raw2sql($this->Limit));
+        }
+
+        if ($this->Order && $this->Direction) {
+            $query = $query->sort(
+                Convert::raw2sql($this->Order),
+                Convert::raw2sql($this->Direction)
+            );
+        }
+
+        // Update all authors
+        $items = ArrayList::create();
+        foreach ($query as $author) {
+            // Add link for each author
+            $author = $author->customise([
+                'URL' => $parent->ProfileLink($author->URLSegment),
+            ]);
+            $items->push($author);
+        }
+
+        return $items;
+    }
+}

templates/A2nt/CMSNiceties/Widgets/BlogAuthorsWidget.ss

@@ -0,0 +1,13 @@
+<% cached 'blogauthorswidget', $List('SilverStripe\Blog\Model\BlogPost').max('LastEdited'), $List('SilverStripe\Blog\Model\BlogPost').count() %>
+	<% if $Authors %>
+		<div class="blog-post__credits">
+		<% loop $Authors %>
+			<% if $URLSegment && not $Up.ProfilesDisabled %>
+				<a href="$URL" class="blog-post__credit">$Name.XML</a><% if not $Last %>,<% end_if %>
+			<% else %>
+				<span class="blog-post__credit">$Name.XML</span><% if not $Last %>,<% end_if %>
+			<% end_if %>
+		<% end_loop %>
+		</div>
+	<% end_if %>
+<% end_cached %>