from odoo import models, api


class StockPicking(models.Model):
    _inherit = 'stock.picking'

    @api.model
    def create(self, vals):
        picking = super(StockPicking, self).create(vals)

        if 'origin' in vals:
            sale_order = self.env['sale.order'].search([('name', '=', vals['origin'])], limit=1)
            if sale_order:
                for follower in sale_order.message_follower_ids:
                    picking.message_subscribe(partner_ids=[follower.partner_id.id])

        return picking