Hi,

Can you achieve it using the the default_get method ? Super the default get method of the corresponding model and inside it, check whether you have particular value inside the context, if so, set the default value from there.

See a sample from the MRP module:

@api.model
def default_get(self, fields_list):
    defaults = super(StockMove, self).default_get(fields_list)
    if self.env.context.get('default_raw_material_production_id'):
        production_id = self.env['mrp.production'].browse(self.env.context['default_raw_material_production_id'])
        if production_id.state == 'done':
            defaults['state'] = 'done'
            defaults['product_uom_qty'] = 0.0
            defaults['additional'] = True
    return defaults

For more: Default Get Function: Set Default Values For Fields In Odoo

Thanks