[web2py] Re: How to avoid computing a field when updating a record?

[howesc]

i haven't been using CRUD directly, and i added this to my form display 
logic to show computed fields as read-only, and update them on submit:

    #make compute fields read-only in the forms
    for f in db[request.args[0]]:
        if f.compute:
            f.writable=False
    #include all fields, including compute fields, in the forms
    fields = [f.name for f in db[request.args[0]] if (f.writable or 
f.readable)]
    form = SQLFORM(db[request.args[0]], fields=fields)

cfh