1、序列号模型添加二维码字段，添加自动根据序列号名称生成二维码的功能，新增打印二维码功能；

sf_manufacturing/models/stock.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 import base64
+import qrcode
 from collections import defaultdict, namedtuple
 import logging
 import json
@@ -12,6 +13,7 @@ from odoo.tools import float_compare
 from odoo.addons.stock.models.stock_rule import ProcurementException
 from odoo.addons.sf_base.commons.common import Common
 from odoo.exceptions import UserError
+from io import BytesIO
 
 
 class StockRule(models.Model):
@@ -264,6 +266,60 @@ class ProductionLot(models.Model):
             return "%s-%s-%03d" % (product.cutting_tool_model_id.code, now, 1)
         return "%s-%03d" % (product.name, 1)
 
+    qr_code_image = fields.Binary(string='二维码', compute='_generate_qr_code')
+
+    @api.depends('name')
+    def _generate_qr_code(self):
+        for record in self:
+            # Generate QR code
+            qr = qrcode.QRCode(
+                version=1,
+                error_correction=qrcode.constants.ERROR_CORRECT_L,
+                box_size=10,
+                border=4,
+            )
+            qr.add_data(record.name)
+            qr.make(fit=True)
+            qr_image = qr.make_image(fill_color="black", back_color="white")
+
+            # Encode the image data in base64
+            image_stream = BytesIO()
+            qr_image.save(image_stream, format="PNG")
+            encoded_image = base64.b64encode(image_stream.getvalue())
+
+            record.qr_code_image = encoded_image
+
+    def print_qr_code(self):
+        self.ensure_one()  # 确保这个方法只为一个记录调用
+        # if not self.lot_id:
+        #     raise UserError("没有找到序列号。")
+        # 假设_lot_qr_code方法已经生成了二维码并保存在字段中
+        qr_code_data = self.qr_code_image
+        if not qr_code_data:
+            raise UserError("没有找到二维码数据。")
+
+        # 生成下载链接或直接触发下载
+        # 此处的实现依赖于你的具体需求，以下是触发下载的一种示例
+        attachment = self.env['ir.attachment'].sudo().create({
+            'datas': self.qr_code_image,
+            'type': 'binary',
+            'description': '二维码图片',
+            'name': self.name + '.png',
+            # 'res_id': invoice.id,
+            # 'res_model': 'stock.picking',
+            'public': True,
+            'mimetype': 'application/x-png',
+            # 'model_name': 'stock.picking',
+        })
+        # 返回附件的下载链接
+        download_url = '/web/content/%s?download=true' % attachment.id
+        base_url = self.env['ir.config_parameter'].sudo().get_param('web.base.url')
+        return {
+            'type': 'ir.actions.act_url',
+            'url': str(base_url) + download_url,
+            'target': 'self',
+        }
+
 
 class StockPicking(models.Model):
     _inherit = 'stock.picking'