I am trying to add up values in my DB, in the averages column to end up
with a summed up value of total averages, i chose the computing fields
methods but i'm not familiar with it, i am not getting the values i need, i
keep getting null in my DB.
db.define_table('marks',
Field('average', 'float', readable=False, writable=False),
Field('grade', readable=False, writable=False),
* #the line below is where i really dont know what i'm doing
in the lambda function*
Field('totalAverage', readable=False, writable=False,
compute=lambda r: r['ave=0, ave+=average']),
Field('averageGrade', readable=False, writable=False),
Field('comments',type='text',requires=IS_NOT_EMPTY()),
)
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