Hi,

You can use the following method for super any function on controllers

Under Odoo, one can also override an existing function in the controller as per the need. It is different than overriding a function in models. For example, one can take the controller function in the ‘website_sale’ module. In this module, there is a function ‘payment_confirmation’ at the route ‘/shop/confirmation’. 

To override this function, firstly one has to import the class on which the function is included.

from odoo.addons.website_sale.controllers.main import WebsiteSale

So now, we have imported the class via specifying the path of the file in which the function class exists. Here the ‘main’ is the file and ‘WebsiteSale’ is the class of the function.

One can override the controller function as , 

from odoo.addons.website_sale.controllers.main import WebsiteSale

class WebsiteSaleInherit(WebsiteSale):

@http.route()
   def payment_confirmation(self, **post):
       res_super = super(WebsiteSaleInherit, self).payment_confirmation(self, **post)
                                                  #My Code                                       .                                                
       return res_super