Suppose if you defined in simple.controller Just like belo example:

class SimpleController(http.Controller):

    @http.route(["/details/employee/<model('simple.controller'):part>/"],

                type='http', auth="user", methods=['GET'], website=True, cors="*")

    def view(self,part,**kwargs):

        action_id = request.env.ref('simple_controller.action_simple_controller').id

         return_kwargs = dict(kwargs)

        kwargs.update({'action':action_id,'model':'simple.controller','accept': '/details/employee/accept/%s/?%s' % (part.id,                        url_encode(return_kwargs)),  'deny': '/details/employee/deny/%s/?%s' % (part.id, url_encode(return_kwargs))})

        value = dict(kwargs)

        priority_get = request.env['simple.controller'].sudo().browse(int(kwargs.get('id')))

        print   priority_get.priority 

        return request.render('simple_controller.simple_controller_templateid', value, part.uuid)