Odoo: How to trigger an onchange event?

Q: Odoo: How to trigger an onchange event?

@api.onchange('code_prefix_start') def _onchange_code_prefix_start(self): if not self.code_prefix_end or self.code_prefix_end < self.code_prefix_start: self.code_prefix_end = self.code_prefix_start

Question

Accepted Answer

@api.onchange('code_prefix_start')
def _onchange_code_prefix_start(self):
    if not self.code_prefix_end or self.code_prefix_end < self.code_prefix_start:
        self.code_prefix_end = self.code_prefix_start