[web2py] execute 2 function during update using sqlform.grid

[黄祥]

hi, 

is it possible to execute 2 function during update using sqlform.grid?
my goal is to combine e.g.1 with e.g.2 onupdate function.
for description :
in e.g.1 during update i want to update the others tables (room and 
cleaning)
in e.g.2 during update i want to archive the previous value, so that i can 
keep record the data changes

e.g. 1.
def __onupdate_booking(form):    
    room=db(db.room.id==form.vars.room).update(status='Booked')
    cleaning=db(db.cleaning.room==form.vars.room).update(is_active=False)
    return locals()

def booking():
    query = db.booking.is_active==True
    has_membership=auth.has_membership('Manager')
    grid=SQLFORM.grid(query, user_signature=False, 
                      maxtextlength=100, 
onvalidation=__onvalidation_booking, 
                      oncreate=__oncreate_booking, 
onupdate=__onupdate_booking, 
                      editable=has_membership, deletable=has_membership)
    return locals()

e.g.2
def booking():
    query = db.booking.is_active==True
    has_membership=auth.has_membership('Manager')
    grid=SQLFORM.grid(query, user_signature=False, 
                      maxtextlength=100, 
onvalidation=__onvalidation_booking, 
                      oncreate=__oncreate_booking, onupdate=auth.archive, 
                      editable=has_membership, deletable=has_membership)
    return locals()

many thanks in advance

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