FEATURE: added delete all link to page comments. Patch via #4427. Thanks walec51

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/cms/branches/2.4@95418 467b73ca-7a2a-4603-9d3b-597d59a354a9

code/sitefeatures/PageComment.php

@@ -176,6 +176,27 @@ class PageComment_Controller extends Controller {
 		$rss->outputToBrowser();
 	}
 	
+	/**
+	 * Deletes all comments on the page referenced by the url param pageid
+	 */
+	function deleteallcomments() {
+		if(Permission::check('CMS_ACCESS_CMSMain')) {
+			$pageId = $_REQUEST['pageid'];
+			if(preg_match('/^\d+$/', $pageId)) {
+				$comments = DataObject::get("PageComment", "ParentID = $pageId");
+				if($comments) foreach($comments as $c) {
+					$c->delete();
+				}
+			}
+		}
+		
+		if(Director::is_ajax()) {
+			echo "";
+		} else {
+			Director::redirectBack();
+		}
+	}
+	
 	function deletecomment() {
 		if(Permission::check('CMS_ACCESS_CMSMain')) {
 			$comment = DataObject::get_by_id("PageComment", $this->urlParams['ID']);

code/sitefeatures/PageCommentInterface.php

@@ -228,6 +228,16 @@ class PageCommentInterface extends RequestHandler {
 		return Director::absoluteBaseURL() . "PageComment/rss?pageid=" . $this->page->ID;
 	}
 	
+	/**
+	 * A link to PageComment_Controller.deleteallcomments() which deletes all
+	 * comments on a page referenced by the url param pageid
+	 */
+	function DeleteAllLink() {
+		if(Permission::check('CMS_ACCESS_CMSMain')) {
+			return Director::absoluteBaseURL() . "PageComment/deleteallcomments?pageid=" . $this->page->ID;
+		}
+	}
+	
 }
 
 /**

templates/PageCommentInterface.ss

@@ -53,6 +53,9 @@
 			<p id="NoComments"><% _t('NOCOMMENTSYET','No one has commented on this page yet.') %></p>
 		<% end_if %>
 	</div>
+	<% if DeleteAllLink %>
+		<p id="DeleteComments"><a href="$DeleteAllLink">Delete all comments on this page</a></p>
+	<% end_if %>
 	<p id="CommentsRSSFeed">
 		<a class="commentrss" href="$CommentRssLink"><% _t('RSSFEEDCOMMENTS', 'RSS feed for comments on this page') %></a> | 
 		<a href="PageComment/rss" class="commentrss" title="<% _t('RSSVIEWALLCOMMENTS', 'View all Comments') %>"><% _t('RSSFEEDALLCOMMENTS', 'RSS feed for all comments') %></a>

tests/PageCommentsTest.php

@@ -0,0 +1,31 @@
+<?php
+
+class PageCommentsTest extends FunctionalTest {
+	
+	static $fixture_file = 'cms/tests/PageCommentsTest.yml';
+	
+	
+	function testDeleteAllCommentsOnPage() {
+		
+		
+		$second = $this->objFromFixture('Page', 'second');
+		$this->autoFollowRedirection = false;
+		$this->logInAs('admin');
+		Director::test('second-page', null, $this->session());
+		Director::test('PageComment/deleteallcomments?pageid='.$second->ID,
+			null, $this->session());
+		Director::test('second-page', null, $this->session());
+		
+		$secondComments = DataObject::get('PageComment', 'ParentID = '.$second->ID);
+		$this->assertNull($secondComments);
+		
+		$first = $this->objFromFixture('Page', 'first');
+		$firstComments = DataObject::get('PageComment', 'ParentID = '.$first->ID);
+		$this->assertNotNull($firstComments);
+		
+		$third = $this->objFromFixture('Page', 'third');
+		$thirdComments = DataObject::get('PageComment', 'ParentID = '.$third->ID);
+		$this->assertEquals($thirdComments->Count(), 3);
+	}
+}
+?>

tests/PageCommentsTest.yml

@@ -0,0 +1,50 @@
+Member:
+   admin:
+      FirstName: admin
+
+Group:
+   admin:
+      Title: Admin
+      Members: =>Member.admin
+
+Permission:
+   admin:
+      Code: ADMIN
+      Group: =>Group.admin
+
+Page:
+    first:
+        Title: First page
+        URLSegment: first-page
+    second:
+        Title: Second page
+        URLSegment: second-page
+    third:
+        Title: Third page
+        URLSegment:third-page
+
+PageComment:
+    firstComA:
+        ParentID: =>Page.first
+        Name: FA
+        Comment: textFA
+    secondComA:
+        ParentID: =>Page.second
+        Name: SA
+        Comment: textSA
+    secondComB:
+        ParentID: =>Page.second
+        Name: SB
+        Comment: textSB
+    thirdComA:
+        ParentID: =>Page.third
+        Name: TA
+        Comment: textTA
+    thirdComB:
+        ParentID: =>Page.third
+        Name: TB
+        Comment: textTB
+    thirdComC:
+        ParentID: =>Page.third
+        Name: TC
+        Comment: textTC