title: graphql prisma nodejs postgresql how to add date created/update fild to graphql type?
body: <p>I am using <code>graphql</code> + <code>prisma</code> (in docker locally), <code>nodejs</code> and <code>postgresql</code>.
   How can I make it add some fields like <code>created/edited</code> date?</p>
  
  <p>For example . I have this type:</p>
  
  <pre><code>type Post {
    id: ID! @unique
    title: String!
    content: String!
    published: Boolean! @default(value: "false")
    author: User!
  }
  </code></pre>
  
  <p>How can i add field like date. Make it equal to date the element created/updated?</p>