title: How to use _fields option in odoo 8
body: <p>I am new to odoo.</p>
  
  <p>Is anyone have tutorial of using _fields feature in odoo 8 ?</p>
  
  <p>In odoo 8, _columns is deprecated.</p>
  
  <blockquote>
    <p>A common pattern in OpenERP was to do Model fields introspection using _columns property. From 8.0 _columns is deprecated by _fields that contains list of consolidated fields instantiated using old or new API.</p>
  </blockquote>
  
  <p>There is no clear documentation about _fields options.</p>
  
  <p>Please give a right tutorial on this. </p>