From 097639e71e1cfbe8908b4d80e12d9df022f61ff4 Mon Sep 17 00:00:00 2001
From: Oleksii Kriuchykhin <okriuchykhin@biosistemika.com>
Date: Thu, 13 Jun 2019 14:28:46 +0200
Subject: [PATCH] Fix view state validation [SCI-3436]

---
 app/models/view_state.rb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/app/models/view_state.rb b/app/models/view_state.rb
index 1e9ccd1e6..833ab538b 100644
--- a/app/models/view_state.rb
+++ b/app/models/view_state.rb
@@ -9,11 +9,12 @@ class ViewState < ApplicationRecord
     message: :not_unique
   }
 
-  validate :validate_state
+  validate :validate_state_content
 
   private
 
-  def validate_state
+  def validate_state_content
+    return unless state.present?
     viewable.validate_view_state(self)
   end
 end