Fixes #2971 added canComment() method and implemented it for ElggBlog

git-svn-id: http://code.elgg.org/elgg/trunk@8381 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 35 insertions, 0 deletions

diff --git a/engine/classes/ElggObject.php b/engine/classes/ElggObject.php
index c47cd217f..f71801144 100644
--- a/engine/classes/ElggObject.php
+++ b/engine/classes/ElggObject.php
@@ -184,4 +184,39 @@ class ElggObject extends ElggEntity {
 			'description',
 		));
 	}
+
+	/**
+	 * Can a user comment on this object?
+	 *
+	 * @see ElggEntity::canComment()
+	 *
+	 * @param int $user_guid User guid (default is logged in user)
+	 * @return bool
+	 * @since 1.8.0
+	 */
+	public function canComment($user_guid = 0) {
+		$result = parent::canComment($user_guid);
+		if ($result !== null) {
+			return $result;
+		}
+
+		if ($user_guid == 0) {
+			$user_guid = elgg_get_logged_in_user_guid();
+		}
+
+		// must be logged in to comment
+		if (!$user_guid) {
+			return false;
+		}
+
+		// must be member of group
+		if (elgg_instanceof($this->getContainerEntity(), 'group')) {
+			if (!$this->getContainerEntity()->isMember(get_user($user_guid))) {
+				return false;
+			}
+		}
+
+		// no checks on read access since a user cannot see entities outside his access
+		return true;
+	}
 }