Added merging of tags and categories

code/admin/GridFieldCategorisationConfig.php

@@ -0,0 +1,51 @@
+<?php
+
+class GridFieldCategorisationConfig extends GridFieldConfig_RecordEditor {
+	/**
+	 * @param int $itemsPerPage
+	 * @param array|SS_List $mergeRecords
+	 * @param string $parentType
+	 * @param string $parentMethod
+	 * @param string $childMethod
+	 */
+	public function __construct($itemsPerPage = 15, $mergeRecords, $parentType, $parentMethod, $childMethod) {
+		parent::__construct($itemsPerPage);
+
+		$this->removeComponentsByType("GridFieldAddNewButton");
+
+		$this->addComponent(
+			new GridFieldAddByDBField("buttons-before-left")
+		);
+
+		$this->addComponent(
+			new GridFieldMergeAction($mergeRecords, $parentType, $parentMethod, $childMethod)
+		);
+
+		$columns = $this->getComponentByType('GridFieldDataColumns');
+
+		$columns->setFieldFormatting(array(
+			'BlogPostsCount' => function($value, &$item) {
+				return $item->BlogPosts()->Count();
+			}
+		));
+
+		$this->changeColumnOrder();
+	}
+
+	/**
+	 * Reorders GridField columns so that Actions is last.
+	 */
+	protected function changeColumnOrder() {
+		/**
+		 * @var GridFieldDataColumns $columns
+		 */
+		$columns = $this->getComponentByType('GridFieldDataColumns');
+
+		$columns->setDisplayFields(array(
+			'Title' => 'Title',
+			'BlogPostsCount' => 'Posts',
+			'MergeAction' => 'MergeAction',
+			'Actions' => 'Actions',
+		));
+	}
+}

code/admin/GridFieldFormAction.php

@@ -0,0 +1,28 @@
+<?php
+
+class GridFieldFormAction extends GridField_FormAction {
+	/**
+	 * @var array
+	 */
+	protected $extraAttributes = array();
+
+	/**
+	 * @param array $attributes
+	 */
+	public function setExtraAttributes(array $attributes) {
+		$this->extraAttributes = $attributes;
+	}
+
+	/**
+	 * @return array
+	 */
+	public function getAttributes()
+	{
+		$attributes = parent::getAttributes();
+
+		return array_merge(
+			$attributes,
+			$this->extraAttributes
+		);
+	}
+}

code/admin/GridFieldMergeAction.php

@@ -0,0 +1,140 @@
+<?php
+
+class GridFieldMergeAction implements GridField_ColumnProvider, GridField_ActionProvider {
+	/**
+	 * List of records to show in the MergeAction column.
+	 *
+	 * @var array|SS_List
+	 */
+	protected $records;
+
+	/**
+	 * Type of parent DataObject (i.e BlogTag, BlogCategory).
+	 *
+	 * @var string
+	 */
+	protected $parentType;
+
+	/**
+	 * Relationship method to reference parent (i.e BlogTags).
+	 *
+	 * @var string
+	 */
+	protected $parentMethod;
+
+	/**
+	 * Relationship method to reference child (i.e BlogPosts).
+	 *
+	 * @var string
+	 */
+	protected $childMethod;
+
+	/**
+	 * @param array|SS_List $records
+	 * @param string $parentType
+	 * @param string $parentMethod
+	 * @param string $childMethod
+	 */
+	public function __construct($records = array(), $parentType, $parentMethod, $childMethod) {
+		$this->records = $records;
+		$this->parentType = $parentType;
+		$this->parentMethod = $parentMethod;
+		$this->childMethod = $childMethod;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function augmentColumns($gridField, &$columns) {
+		if(!in_array('MergeAction', $columns)) {
+			$columns[] = 'MergeAction';
+		}
+
+		return $columns;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function getColumnsHandled($gridField) {
+		return array('MergeAction');
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function getColumnContent($gridField, $record, $columnName) {
+		if($columnName === 'MergeAction') {
+			$dropdown = new DropdownField('Target', 'Target', $this->records->map());
+
+			$prefix = strtolower($this->parentMethod . '-' . $this->childMethod);
+
+			$action = GridFieldFormAction::create(
+				$gridField,
+				'MergeAction' . $record->ID,
+				'Move',
+				'merge',
+				array(
+					'record' => $record->ID,
+					'target' => $prefix . '-target-record-' . $record->ID,
+				)
+			);
+
+			$action->setExtraAttributes(array(
+				'data-target' => $prefix . '-target-record-' . $record->ID
+			));
+
+			return $dropdown->Field() . $action->Field() . '<a class="MergeActionReveal">move posts to</a>';
+		}
+
+		return null;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function getColumnAttributes($gridField, $record, $columnName) {
+		return array('class' => 'MergeAction');
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function getColumnMetadata($gridField, $columnName) {
+		return array('title' => 'Move Posts To');
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function getActions($gridField) {
+		return array('merge');
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function handleAction(GridField $gridField, $actionName, $arguments, $data) {
+		if($actionName === 'merge') {
+			$controller = Controller::curr();
+
+			$request = $controller->getRequest();
+
+			$target = $request->requestVar($arguments["target"]);
+
+			$parentType = $this->parentType;
+
+			$fromParent = $parentType::get()->byId($arguments['record']);
+			$toParent = $parentType::get()->byId($target);
+
+			$posts = $fromParent->{$this->childMethod}();
+
+			foreach ($posts as $post) {
+				$relationship = $post->{$this->parentMethod}();
+
+				$relationship->remove($fromParent);
+				$relationship->add($toParent);
+			}
+		}
+	}
+}

code/model/Blog.php

@@ -80,41 +80,38 @@ class Blog extends Page implements PermissionProvider {
 
 	public function getCMSFields() {
 		Requirements::css(BLOGGER_DIR . '/css/cms.css');
-		
 		Requirements::javascript(BLOGGER_DIR . '/js/expandable-help-text.js');
+		Requirements::javascript(BLOGGER_DIR . '/js/merge-action.js');
 
 		$self =& $this;
+
 		$this->beforeUpdateCMSFields(function ($fields) use ($self) {
-
+			if(!$self->canEdit()) {
-			// Don't show this tab if edit is not allowed
+				return;
-			if(!$self->canEdit()) return;
+			}
-
-			// Create categories and tag config
-			$config = GridFieldConfig_RecordEditor::create();
-			$config->removeComponentsByType("GridFieldAddNewButton");
-			$config->addComponent(new GridFieldAddByDBField("buttons-before-left"));
 
 			$categories = GridField::create(
 				"Categories",
 				_t("Blog.Categories", "Categories"),
 				$self->Categories(),
-				$config
+				GridFieldCategorisationConfig::create(15, $self->Categories(), 'BlogCategory', 'Categories', 'BlogPosts')
 			);
 
 			$tags = GridField::create(
 				"Tags",
 				_t("Blog.Tags", "Tags"),
 				$self->Tags(),
-				$config
+				GridFieldCategorisationConfig::create(15, $self->Categories(), 'BlogTag', 'Tags', 'BlogPosts')
 			);
 
-			$fields->addFieldsToTab("Root.BlogOptions", array(
+			$fields->addFieldsToTab("Root.Categorisation", array(
 				$categories,
 				$tags
 			));
 		});
 
 		$fields = parent::getCMSFields();
+
 		return $fields;
 	}
 
@@ -122,6 +119,7 @@ class Blog extends Page implements PermissionProvider {
 	 * Check if this member is an editor of the blog
 	 *
 	 * @param Member $member
+	 *
 	 * @return boolean
 	 */
 	public function isEditor($member) {
@@ -134,6 +132,7 @@ class Blog extends Page implements PermissionProvider {
 	 * Check if this member is a writer of the blog
 	 *
 	 * @param Member $member
+	 *
 	 * @return boolean
 	 */
 	public function isWriter($member) {
@@ -146,6 +145,7 @@ class Blog extends Page implements PermissionProvider {
 	 * Check if this member is a contributor of the blog
 	 *
 	 * @param Member $member
+	 *
 	 * @return boolean
 	 */
 	public function isContributor($member) {
@@ -161,6 +161,7 @@ class Blog extends Page implements PermissionProvider {
 	 * E.g. `Hello $RoleOf($CurrentMember.ID)`
 	 *
 	 * @param Member|integer $member
+	 *
 	 * @return string|null Author, Editor, Writer, Contributor, or null if no role
 	 */
 	public function RoleOf($member) {
@@ -178,6 +179,7 @@ class Blog extends Page implements PermissionProvider {
 	 *
 	 * @param Member $member
 	 * @param DataList $list Relation to check
+	 *
 	 * @return boolean
 	 */
 	protected function isMemberOf($member, $list) {
@@ -191,7 +193,6 @@ class Blog extends Page implements PermissionProvider {
 	}
 
 
-
 	public function canEdit($member = null) {
 		$member = $member ?: Member::currentUser();
 		if(is_numeric($member)) $member = Member::get()->byID($member);
@@ -206,6 +207,7 @@ class Blog extends Page implements PermissionProvider {
 	 * Determine if this user can edit the editors list
 	 *
 	 * @param Member $member
+	 *
 	 * @return boolean
 	 */
 	public function canEditEditors($member = null) {
@@ -222,6 +224,7 @@ class Blog extends Page implements PermissionProvider {
 	 * Determine if this user can edit writers list
 	 *
 	 * @param Member $member
+	 *
 	 * @return boolean
 	 */
 	public function canEditWriters($member = null) {
@@ -242,6 +245,7 @@ class Blog extends Page implements PermissionProvider {
 	 * Determines if this user can edit the contributors list
 	 *
 	 * @param type $member
+	 *
 	 * @return boolean
 	 */
 	public function canEditContributors($member = null) {
@@ -356,7 +360,6 @@ class Blog extends Page implements PermissionProvider {
 	}
 
 
-
 	/**
 	 * Returns blogs posts for a given date period.
 	 *
@@ -389,6 +392,7 @@ class Blog extends Page implements PermissionProvider {
 	 * Get a link to a Member profile.
 	 *
 	 * @param urlSegment
+	 *
 	 * @return String
 	 */
 	public function ProfileLink($urlSegment) {
@@ -406,7 +410,6 @@ class Blog extends Page implements PermissionProvider {
 	}
 
 
-
 	/**
 	 * This overwrites lumberjacks default gridfield config.
 	 *
@@ -499,7 +502,6 @@ class Blog extends Page implements PermissionProvider {
 }
 
 
-
 /**
  * Blog Controller
  *
@@ -539,7 +541,6 @@ class Blog_Controller extends Page_Controller {
 	protected $blogPosts;
 
 
-
 	public function index() {
 		$this->blogPosts = $this->getBlogPosts();
 		return $this->render();
@@ -622,7 +623,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Renders the blog posts for a given tag.
 	 *
@@ -638,7 +638,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Renders the blog posts for a given category
 	 *
@@ -759,7 +758,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Returns a list of paginated blog posts based on the blogPost dataList
 	 *
@@ -783,7 +781,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Tag Getter for use in templates.
 	 *
@@ -800,7 +797,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Category Getter for use in templates.
 	 *
@@ -817,7 +813,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Fetches the archive year from the url
 	 *
@@ -832,7 +827,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Fetches the archive money from the url.
 	 *
@@ -852,7 +846,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Fetches the archive day from the url
 	 *
@@ -871,7 +864,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Returns the current archive date.
 	 *
@@ -896,7 +888,6 @@ class Blog_Controller extends Page_Controller {
 	}
 
 
-
 	/**
 	 * Returns a link to the RSS feed.
 	 *

css/cms.css

@@ -7,24 +7,20 @@
 /*
  * Sprite maps & Icons
  */
-/* line 48, blog-icon/*.png */
 .blog-icon-sprite, .gridfield-icon .blog-icon-timer {
   background-image: url('../images/blog-icon-s0a5ab5f851.png');
   background-repeat: no-repeat;
 }
 
-/* line 84, ../../../../../Library/Ruby/Gems/2.0.0/gems/compass-core-1.0.3/stylesheets/compass/utilities/sprites/_base.scss */
 .gridfield-icon .blog-icon-timer {
   background-position: 0 0;
 }
 
-/* line 20, ../scss/cms.scss */
 #FeaturedImage .middleColumn {
   clear: none;
   float: left;
 }
 
-/* line 25, ../scss/cms.scss */
 .blog-admin-sidebar {
   width: 280px;
   border-right: none;
@@ -34,11 +30,9 @@
   bottom: 0px;
   height: 100%;
 }
-/* line 34, ../scss/cms.scss */
 .blog-admin-sidebar .cms-panel-toggle a {
   text-align: left;
 }
-/* line 38, ../scss/cms.scss */
 .blog-admin-sidebar ~ .blog-admin-outer {
   width: 100%;
   padding-right: 280px;
@@ -48,59 +42,47 @@
   overflow-x: hidden;
   box-sizing: border-box;
 }
-/* line 47, ../scss/cms.scss */
 .blog-admin-sidebar ~ .blog-admin-outer > .ss-tabset {
   position: relative;
   overflow: auto;
   height: 100%;
   width: 100%;
 }
-/* line 54, ../scss/cms.scss */
 .blog-admin-sidebar ~ .blog-admin-outer > .ss-tabset #Title label {
   float: none;
 }
-/* line 57, ../scss/cms.scss */
 .blog-admin-sidebar ~ .blog-admin-outer > .ss-tabset #Title .middleColumn, .blog-admin-sidebar ~ .blog-admin-outer > .ss-tabset #Title input {
   width: 100%;
   max-width: 100%;
   margin-left: 0;
 }
-/* line 68, ../scss/cms.scss */
 .blog-admin-sidebar .cms-content-view > .field + .field {
   margin-top: 10px;
 }
-/* line 73, ../scss/cms.scss */
 .blog-admin-sidebar .cms-content-view > .field.urlsegment .preview {
   padding-top: 0;
   line-height: 25px;
 }
-/* line 78, ../scss/cms.scss */
 .blog-admin-sidebar .cms-content-view > .field.urlsegment .edit {
   float: right;
 }
-/* line 85, ../scss/cms.scss */
 .blog-admin-sidebar .cms-content-view > .field.datetime > .middleColumn > .date {
   width: 60%;
 }
-/* line 89, ../scss/cms.scss */
 .blog-admin-sidebar .cms-content-view > .field.datetime > .middleColumn > .time {
   width: 36%;
   float: right;
 }
-/* line 94, ../scss/cms.scss */
 .blog-admin-sidebar .cms-content-view > .field.datetime > .middleColumn .middleColumn, .blog-admin-sidebar .cms-content-view > .field.datetime > .middleColumn input {
   width: 100%;
 }
-/* line 103, ../scss/cms.scss */
 .blog-admin-sidebar.collapsed ~ .blog-admin-outer {
   padding-right: 41px;
 }
-/* line 109, ../scss/cms.scss */
 .blog-admin-sidebar.cms-content-tools .cms-panel-content {
   width: auto;
 }
 
-/* line 115, ../scss/cms.scss */
 .toggle-description {
   text-indent: -1000000px;
   display: inline-block;
@@ -110,14 +92,12 @@
   margin-left: 4px;
 }
 
-/* line 124, ../scss/cms.scss */
 .middleColumn.toggle-description-correct-middle {
   margin-left: 0;
   float: left;
   width: 416px;
 }
 
-/* line 130, ../scss/cms.scss */
 label.right.toggle-description-correct-right {
   display: inline-block;
   margin-left: 0;
@@ -125,22 +105,26 @@ label.right.toggle-description-correct-right {
   float: left;
 }
 
-/* line 137, ../scss/cms.scss */
 .description.toggle-description-correct-description {
   width: 416px;
   padding: 12px 0;
 }
 
-/* line 144, ../scss/cms.scss */
 .custom-summary .ui-accordion-content .field {
   margin: 0;
 }
-/* line 148, ../scss/cms.scss */
 .custom-summary .ui-accordion-content,
 .custom-summary .ui-accordion-content .field {
   padding: 0;
 }
-/* line 153, ../scss/cms.scss */
 .custom-summary .ui-icon-triangle-1-e {
   background-position: -16px -128px;
 }
+
+.cms table.ss-gridfield-table tr td.MergeAction {
+  width: 150px;
+}
+
+.cms table.ss-gridfield-table tr td.MergeAction select {
+  width: 75px;
+}

js/merge-action.js

@@ -0,0 +1,44 @@
+/**
+ * Register expandable help text functions with fields.
+ */
+(function ($) {
+
+	$.entwine('ss', function ($) {
+
+		$('.MergeAction').entwine({
+			'onadd': function() {
+				var $this = $(this);
+
+				$this.on('click', 'select', function() {
+					return false;
+				});
+
+				$this.children('button').each(function(i, button) {
+					var $button = $(button);
+					var $select = $button.prev('select');
+
+					$button.before('<input type="hidden" name="' + $button.attr('data-target') + '" value="' + $select.val() + '" />');
+				});
+
+				$this.on('change', 'select', function(e) {
+					var $target = $(e.target);
+
+					$target.next('input').val($target.val());
+				});
+
+				$this.children('button, select').hide();
+
+				$this.on('click', '.MergeActionReveal', function(e) {
+					var $target = $(e.target);
+
+					$target.parent().children('button, select').show();
+					$target.hide();
+
+					return false;
+				});
+			}
+		})
+
+	});
+
+}(jQuery));

scss/cms.scss

@@ -1,12 +1,10 @@
 /**
  * CMS Styles
  */
-
 /**
  * Include Compass framework
  */
 @import "compass";
-
 /*
  * Sprite maps & Icons
  */
@@ -140,7 +138,6 @@ label.right.toggle-description-correct-right {
 }
 
 .custom-summary {
-
 	.ui-accordion-content .field {
 		margin: 0;
 	}
@@ -153,5 +150,12 @@ label.right.toggle-description-correct-right {
 	.ui-icon-triangle-1-e {
 		background-position: -16px -128px;
 	}
-
+}
+
+.cms table.ss-gridfield-table tr td.MergeAction {
+	width: 150px;
+}
+
+.cms table.ss-gridfield-table tr td.MergeAction select {
+	width: 75px;
 }