Odoo 14: get another field value onchange of Many2one field

Question

hi all,
models: 1) items  2) subcat
event: onchange
I had a model items, contains a Many2one field for category, when user select a value (subcat) i want to get another field value ( parentcat, it is Char type ) from same model - subcat -
how i can achieve this, please help.
regards

Jack Dane · Accepted Answer

Hello,
You would want to look at related fields [1] . You would have the field subcat_parentcat on the items model like this:
subcat_parentcat = fields.Char(related="category_id.parentcat")
This would get the parentcat char field of whatever is selected in the Many2one category_id.
I hope this helps,
Thanks,

[1] /documentation/14.0/reference/orm.html#related-fields

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