I'd like to create a SQLFORM button, but only show the button if a value is 
present in the cell. Is this possible? I'm thinking of creating a function 
that will check to see if each record has a value present in the field

for example:

define_table('my_sqldata',
        Field('name',
        Field('address',
        migrate=False)

if my_sqldata.address != '' then show icon in SQLFORM else: show nothing

Is this possible?

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