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  • How to use api.onchange in Odoo ?

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    All the work and tasks are done in the cache in on_change context. Therefore so you dont need to be worried for altering database as the recordSet will be able to altred inside your function. Thats the main difference with @api.depends.
    For example you can see below code.

    @api.onchange('fieldx')
    def do_stuff(self):
       if self.fieldx == x:
          self.fieldy = 'toto'

    Note- function return, differences between the cache and the RecordSet will be returned to the form.

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