Issue 9799: Ensure that the first post date is after the registration date

src/Content/Widget.php

@@ -463,7 +463,7 @@ class Widget
 
 		$cachekey = 'Widget::postedByYear' . $uid . '-' . (int)$wall;
 		$dthen = DI::cache()->get($cachekey);
-		if (!empty($dthen)) {
+		if (empty($dthen)) {
 			$dthen = Item::firstPostDate($uid, $wall);
 			DI::cache()->set($cachekey, $dthen, Duration::HOUR);
 		}

src/Model/Item.php

@@ -2177,9 +2177,15 @@ class Item
 
 	public static function firstPostDate($uid, $wall = false)
 	{
-		$condition = ['gravity' => GRAVITY_PARENT, 'uid' => $uid, 'wall' => $wall, 'deleted' => false, 'visible' => true];
+		$user = User::getById($uid, ['register_date']);
+		if (empty($user)) {
+			return false;
+		}
+
+		$condition = ["`uid` = ? AND `wall` = ? AND NOT `deleted` AND `visible` AND `received` >= ?",
+			$uid, $wall, $user['register_date']];
 		$params = ['order' => ['received' => false]];
-		$thread = Post::selectFirst(['received'], $condition, $params);
+		$thread = Post::selectFirstThread(['received'], $condition, $params);
 		if (DBA::isResult($thread)) {
 			$postdate = substr(DateTimeFormat::local($thread['received']), 0, 10);
 			return $postdate;

src/Model/Post.php

@@ -181,6 +181,31 @@ class Post
 		}
 	}
 
+	/**
+	 * Retrieve a single record from the post-thread table and returns it in an associative array
+	 *
+	 * @param array $fields
+	 * @param array $condition
+	 * @param array $params
+	 * @return bool|array
+	 * @throws \Exception
+	 * @see   DBA::select
+	 */
+	public static function selectFirstThread(array $fields = [], array $condition = [], $params = [])
+	{
+		$params['limit'] = 1;
+
+		$result = self::selectThread($fields, $condition, $params);
+
+		if (is_bool($result)) {
+			return $result;
+		} else {
+			$row = self::fetch($result);
+			DBA::close($result);
+			return $row;
+		}
+	}
+
 	/**
 	 * Select rows from the post table and returns them as an array
 	 *