title: Adding new field on Odoo Product Variant
body: <p>I am trying to add new field to product.product model.</p>
  
  <p>What I've done so far is:</p>
  
  <p>Add new field on the following model (From Settings > Database Structure > Models):</p>
  
  <ol>
  <li>product.product</li>
  </ol>
  
  <p>with the following details:</p>
  
  <ul>
  <li>Name: x_product_cost</li>
  <li>Field Label: Product Cost</li>
  <li>Field Type: Float</li>
  </ul>
  
  <p>and leave the rest to default.</p>
  
  <p>The problem is i am unable to show it on the form. This is the only code that is generated when I tried to edit Form:</p>
  
  <ul>
  <li>View Name: product.product.form</li>
  <li>Object: product.product</li>
  <li><p>Inherited View: product.template.common.form</p>
  
  <p>
  
                      Product Variant
                  
                  
                      
                      
                  
                  
                     lst_price
                  
                  
                      
                      
                  
                  
                      
                  
              </p></li>
  </ul>
  
  <p>I can't use product.template model, since that inherits to product.product
  Am i missing something here?</p>
  
  <p>PS: I am trying to temporarily fixed assign-different-cost-on-product-variant bug as specified here</p>
  
  <p><a href="https://github.com/odoo/odoo/issues/1198" rel="nofollow">https://github.com/odoo/odoo/issues/1198</a></p>
  
  <p>Can anyone help me with this?</p>