title: Disable Edit & Delete Option in Odoo 11
body: <p>I'm a new Odoo developer I created a simple request module in Odoo 11 that will make employee request for stock but when the request is saved and submitted I don't want the request to be edited and deleted by users.
  I have tried the security rules <code>perm_write = 0</code> and <code>edit</code> option lost but users are not able to submit the request and help, please?</p>
  
  <pre><code>id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
  access_stock_request_user,stock request user,model_stock_request,group_stock_request_user,1,0,1,0
  </code></pre>