19.0 vanilla

odoo-bringout-oca-ocb-mrp/mrp/models/ir_attachment.py

@@ -0,0 +1,18 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models
+
+
+class IrAttachment(models.Model):
+    _inherit = "ir.attachment"
+
+    def _post_add_create(self, **kwargs):
+        super()._post_add_create(**kwargs)
+        if self.res_model == "mrp.bom":
+            bom = self.env['mrp.bom'].browse(self.res_id)
+            self.res_model = bom.product_id._name if bom.product_id else bom.product_tmpl_id._name
+            self.res_id = bom.product_id.id if bom.product_id else bom.product_tmpl_id.id
+            self.env['product.document'].create({
+                'ir_attachment_id': self.id,
+                'attached_on_mrp': 'bom'
+            })