Student Discount

discount.py

def create(self, cr, uid, vals, context=None, check=True):
    # Calculate the acutal_fee and discounts again as readonly fields aren't
    # stored in the database.
    std_id = vals.get('student_id')
    res = self.onchange_get_actual_fee(cr, uid, std_id, std_id, vals.get('fee_type'), context)

    acutal_fee = res.get('value').get('actual_fee')
    discounted_fee = acutal_fee - (vals.get('discount') * acutal_fee/100)

    vals.update({'actual_fee':acutal_fee})
    vals.update({'discounted_fee':discounted_fee})

    result = super(osv.osv, self).create(cr, uid, vals, context)
    return result

def write(self, cr, uid, ids, vals, context=None, check=True, update_check=True):
    # Calculate the acutal_fee and discounts again as readonly fields aren't
    # stored in the database.
    std_id = vals.get('student_id')
    res = self.onchange_get_actual_fee(cr, uid, std_id, std_id, vals.get('fee_type'), context)

    acutal_fee = res.get('value').get('actual_fee')
    discounted_fee = acutal_fee - (vals.get('discount') * acutal_fee/100)

    vals.update({'actual_fee':acutal_fee})
    vals.update({'discounted_fee':discounted_fee})

    result = super(osv.osv, self).write(cr, uid, ids, vals, context)
    return result