成品，坯料复制模板中的采购申请字段模板

jikimo_purchase_request/models/__init__.py

@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+from . import product_template

jikimo_purchase_request/models/product_template.py

@@ -0,0 +1,17 @@
+from odoo import models, fields
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    purchase_request_id = fields.Many2one('purchase.request', string='采购申请')
+
+    def no_bom_product_create(self, product_id, item, order_id, route_type, i, finish_product):
+        """ 创建坯料时，复制采购申请 """
+        template_id = super(ProductTemplate, self).no_bom_product_create(product_id, item, order_id, route_type, i, finish_product)
+        template_id.purchase_request = product_id.purchase_request
+        return template_id
+
+    def copy_template(self, product_template_id):
+        """ 复制成品模板时，复制采购申请 """
+        super(ProductTemplate, self).copy_template(product_template_id)
+        self.purchase_request = product_template_id.purchase_request