syntex:

@api.model

def create(self, vals):

   # do something here

    return super(class_name, self).create(vals)

example: if you want to override the sale object create method, do something like code into the file

@api.model

def create(self, vals):

 # do something 

 record = super(SaleOrder, self).create(vals)

 # do something, if you want to do otherwise return 

 return record

check here more about override the method live example:

https://github.com/odoo/odoo/blob/master/addons/account/models/account.py#L404

1. def create(self, cr, uid, vals, context=None): -->Method Returns to Super Method

   vals['allday']=False
   eventid=super(modelname, self).create(cr, uid, vals, context=context)
   meetingobj=self.browse(cr,uid,eventid,context=context)
   Your code Here..................
   
   
   return eventid
   

2. def create(self, cr, uid, vals, context=None): -->Method Returns to Super Method vals['all_day'] = False Your code Here.................... return super(modelname, self).create(cr, uid, vals, context=context)

3. If you want to Omit your base create method and need to create your own method means , Use following code.This method is not return to Super create method.

   def create(self, cr, uid, vals, context=None): vals['all_day'] = False Your code Here.................... res = osv.osv.write(self, cr, uid, ids, values, context=context) return res

class res_users(models.Model): _inherit ='res.users'

@api.model
def create(self, vals):

    #Write your logic here
    print 'Fields and their values to be created in a dictionary',vals
    res = super(res_users, self).create(vals)

    #Write your logic here

    return res

full details here: http://odootechnical.com/learn-overriding-create-method-in-odoo-8/