新增

mrp_plm/models/product.py

@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models, _
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    version = fields.Integer('Version', default=1, readonly=True, copy=False, help="The current version of the product.")
+    eco_count = fields.Integer('# ECOs',compute='_compute_eco_count')
+    eco_ids = fields.One2many('mrp.eco', 'product_tmpl_id', 'ECOs')
+
+    def _compute_eco_count(self):
+        for p in self:
+            p.eco_count = len(p.eco_ids)