Hello

I've been trying to use a compute field that needs to use a class I created 
. But I get the error  : TypeError: unhashable type: 'list'

Thus I intend to instead of a computed field, just do the calculations 
before  processing the form.

  if form1.process(session=None, formname='tabla1').accepted:

The field I intend to calculate before inserting is 'consumo_mensual'

my code so  far is similar to this:

form1 = SQLFORM(db.energia_termica)

request.vars.consumo_mensual = ConvEtermica(request.vars.tipo 
,request.vars.consumo_teorico, request.vars.horas_uso_mes).consumo_mensual()

form1.vars.consumo_mensual = request.vars.consumo_mensual
 if form1.process(session=None, formname='tabla1').accepted:



but it really is ignoring my tweak

What is the correct way to doing it?

Thanks


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