Computed field that sums records

Question

Hello, I have Odoo8.

In a model A I have a One2many field and a Many2many field. The related models has fields which are float values. I want to add a computed field in the model A that sums all the float values of the other two models related. How can I do?

I do this but not works (in cases return value 0 and in cases only one value, not the sum)

@api.one
@api.depends('pays')
def _actualiza_monto(self):
total_comprado = 0
for compra in self.pays
total_comprado = total_comprado + compra.amoun

Vasanth · Answer

Hi Jose ,

If you are using for loop means you should use *@api.multi*..If you use @api.one means it returns only one value

So the cosde should be:

@api.multi
@api.depends('pays')
def _actualiza_monto(self):
total_comprado = 0
for compra in self.pays
total_comprado = total_comprado + compra.amount_total

self.computed_field = total_comprado

Zbik · Answer

Hi Jose, probably your problem is related to the tab formatting, last line is without tab and is outside of method?

@api.one
@api.depends('pays')
def _actualiza_monto(self):
total_comprado = 0
for compra in self.pays
total_comprado = total_comprado + compra.amount_total
self.computed_field = total_comprado

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