1 files changed, 12 insertions, 0 deletions
diff --git a/model.lisp b/model.lisp
index fc8d93f..42142ed 100644
--- a/model.lisp
+++ b/model.lisp
@@ -36,6 +36,10 @@
 
 ;;; MODEL OPERATIONS
 
+(defun can-edit-p (user playlist)
+  (or (eq (playlist-user playlist) user)
+      (member user (playlist-editors playlist) :test #'eq)))
+
 (defun invite-by-code (code)
   "Returns NIL if CODE is an invalid invite code. Returns the INVITE
    instance otherwise"
@@ -56,6 +60,14 @@
       (when (equalp pwhash (hash-string password pwsalt))
         user))))
 
+(defun last-change (obj)
+  (slot-value obj 'bknr.datastore::last-change))
+
+(defun recent-playlists (&optional (count 10))
+  (take count
+        (sort (copy-seq (store-objects-with-class 'playlist))
+              #'>
+              :key #'last-change)))
 (defun playlist-duration (pl)
   (reduce #'+
           (playlist-tracks pl)