title: How can I save a hash in my rails database?
body: <p>I am working on a rails application.</p>
  
  <p>I need to save a key pair value like [user_email &amp; user_phone] in a single attribute, I am thinking to use a hash with key user_email &amp; value user_phone.</p>
  
  <p>I have PostgreSQL DB with rails 6.0.3, How can I proceed with creating a hash in my DB ?</p>