how to use special comand for manymany fields

Question

hello
i add one object button . i add two field first is partner_id(many2one) and second is sale_ids(many2many) .
now i want this flow

first i select re.partner and i click on my button so in sale_ids field automatic give me the all sale order in this field

thank you in advamce

CandidRoot Solutions Private Limited · Answer

you can call following method to update sale_ids(m2m) from the button:
def update_m2m ( self ):
for rec in self :
rec.sale_ids = [( 6 , 0 , self .search([( 'id' , '!=' ,rec.id),( 'partner_id' , '=' , rec.partner_id.id)]).ids)]
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