1 files changed, 29 insertions, 5 deletions
diff --git a/mod/blog/start.php b/mod/blog/start.php
index b9911aa74..2d8f75ed2 100644
--- a/mod/blog/start.php
+++ b/mod/blog/start.php
@@ -225,11 +225,35 @@ function blog_ecml_views_hook($hook, $entity_type, $return_value, $params) {
 }
 
 /**
- * When upgrading, check if the ElggBlog class has been registered as this
- * was added in Elgg 1.8
+ * Upgrade from 1.7 to 1.8.
  */
-function blog_run_upgrades() {
-	if (!update_subtype('object', 'blog', 'ElggBlog')) {
-		add_subtype('object', 'blog', 'ElggBlog');
+function blog_run_upgrades($event, $type, $details) {
+	$blog_upgrade_version = get_plugin_setting('upgrade_version', 'blogs');
+
+	if (!$blog_upgrade_version) {
+		 // When upgrading, check if the ElggBlog class has been registered as this
+		 // was added in Elgg 1.8
+		if (!update_subtype('object', 'blog', 'ElggBlog')) {
+			add_subtype('object', 'blog', 'ElggBlog');
+		}
+
+		// only run this on the first migration to 1.8
+		// add excerpt to all blogs that don't have it.
+		$ia = elgg_set_ignore_access(true);
+		$options = array(
+			'type' => 'object',
+			'subtype' => 'blog'
+		);
+
+		$blogs = new ElggBatch('elgg_get_entities', $options);
+		foreach ($blogs as $blog) {
+			if (!$blog->excerpt) {
+				$blog->excerpt = elgg_get_excerpt($blog->description);
+			}
+		}
+
+		elgg_set_ignore_access($ia);
+
+		elgg_set_plugin_setting('upgrade_version', 1, 'blogs');
 	}
 }