only validate zip on create

wimo7083 · wimo7083 · commit 21d8667e83e5 · 2018-11-08T23:38:24.000-07:00
diff --git a/app/models/user.rb b/app/models/user.rb
@@ -41,7 +41,7 @@ class User < ApplicationRecord
 
   validates_format_of :email, :with => VALID_EMAIL
   validates :email, uniqueness: true
-  validates :zip, presence: true
+  validates :zip, presence: true, :on => :create
 
   has_many :requests
   has_many :votes
