diff --git a/app/models/party.rb b/app/models/party.rb
index 6e52a5d..a988c27 100644
--- a/app/models/party.rb
+++ b/app/models/party.rb
@@ -62,6 +62,7 @@ class Party < ApplicationRecord
   has_many :favorites
 
   before_create :set_shortcode
+  before_save :set_edit_key
 
   ##### Amoeba configuration
   amoeba do
@@ -100,6 +101,12 @@ class Party < ApplicationRecord
     self.shortcode = random_string
   end
 
+  def set_edit_key
+    if !self.user
+      self.edit_key = Digest::SHA1.hexdigest([Time.now, rand].join)
+    end
+  end
+
   def random_string
     num_chars = 6
     o = [('a'..'z'), ('A'..'Z'), (0..9)].map(&:to_a).flatten