Hello, 

I have a call declared with a 

@api.one
@api.depends('field1', 'field2')
def _compute_availibility(self):

inside a class which is part of a one2many relation.  I want to calculate a sum from values typed in previous lines, tried with 

self_values = self.search([('domain')])

but  values are always zeros, I believe it's because I can get only values from current line, since its a new line, all values are zero.

How can I access values from previous lines?

Thank you