I was hoping to get assistance here, i have a database table called*
(logging)* that has 3 fields, *(startingDistanceValue, endingDistanceValue
and distanceTravelled)*, distanceTravelled is the difference between
endingDistanceValue and startingDistanceValue, when I start my trip i enter
startingDistanceValue & subit my form, when i arrive i update & edit my
form by entering endingDistanceValue, what i want is that by entering
endingDistanceValue then the distanceTravelled is calculated automatically
and acquires its value automatically then i submit my form for saving. How
can i achieve this in web2py?
*Model:*
db.define_table('logging',
Field('startingDistanceValue','integer', requires=
IS_NOT_EMPTY()),
Field('endingDistanceValue','integer', requires=IS_NOT_EMPTY
()),
Field('distanceTravelled'))
Regards:
Mostwanted
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