How to set default values for M2M relation on existing projects?

Question

I've extended the project module with a many2many field for subtypes. The field will be used to set the tasks users following sub types. When I create a new project it sets the correct default values, but not on existing. Is there a way to set default values for existing projects.

def _get_user_default_subtypes(self):
return self.env['mail.message.subtype'].sudo().search([('res_model', '=', False)]).ids  user_subtype_ids = fields.Many2many('mail.message.subtype', 'project_user_subtype_rel', 'pr

Avinash Nk · Accepted Answer

Hi,
Default works at the creation time.
It is better to do this in an onchange function, if you have any other field.
Or
Try to update existing records with a temporary function.
Or
Import the data using an excel/csv file
Thanks

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