From aedc9f5409d740e844ca1d2c4ee455fb2b38b1dc Mon Sep 17 00:00:00 2001
From: Jyri-Petteri Paloposki <jyri-petteri.paloposki@iki.fi>
Date: Tue, 22 Feb 2022 22:21:19 +0200
Subject: [PATCH] Validate uniqueness of the from address.

Fixes #2745.
---
 app/models/preference.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/models/preference.rb b/app/models/preference.rb
index 79f279bb0..8e3d23ad9 100644
--- a/app/models/preference.rb
+++ b/app/models/preference.rb
@@ -2,6 +2,8 @@ class Preference < ApplicationRecord
   belongs_to :user
   belongs_to :sms_context, :class_name => 'Context'
 
+  validates_uniqueness_of :sms_email, :case_sensitive => false
+
   def self.themes
     { :black => 'black', :light_blue => 'light_blue' }
   end