validating dspace_url and dspace_handle

app/models/user.rb

@@ -97,6 +97,10 @@ class User < ApplicationRecord
 
   validates :terms_of_service, acceptance: true
 
+  validates :dspace_url, presence: true, if: Proc.new {|u| !u.dspace_handle.blank? || !u.dspace_sets.blank?}
+
+  validates :dspace_handle, presence: true, if: Proc.new {|u| !u.dspace_url.blank? || !u.dspace_sets.blank?}
+
   enum submitter_request: { default: 0, requested: 1, accepted: 2, rejected: 3 }
 
   searchkick language: 'brazilian', match: :word_start, searchable: [:name], callbacks: :async