新增工件配送模型及其tree视图，search视图，添加自动计算配送时长功能；

sf_manufacturing/models/mrp_workorder.py

@@ -772,3 +772,34 @@ class SfWorkOrderBarcodes(models.Model):
     #
     #     else:
     #         self.pro_code_ok = workorder.pro_code_is_ok(barcode)
+
+
+class WorkpieceDelivery(models.Model):
+    _name = 'sf.workpiece.delivery'
+    _description = '工件配送单列表'
+
+    name = fields.Char('工件编码/任务编码')
+    mrp_workorder_id = fields.Many2one('mrp.workorder', string='工件编码/任务编码',
+                                       domain=[('name', 'in', ('装夹', '解除装夹'))])
+    workpiece_code = fields.Char('同运工件编码')
+    feeder_station_start = fields.Char('起点接驳站')
+    feeder_station_destination = fields.Char('目的接驳站')
+    production_line_id = fields.Many2one('sf.production.line', string='目标生产线')
+    task_delivery_time = fields.Datetime('任务下发时间')
+    task_completion_time = fields.Datetime('任务完成时间')
+    delivery_time = fields.Char('配送时长', compute='_compute_delivery_time')
+    status = fields.Selection([('待下发', '待下发'), ('待配送', '待配送'), ('已配送', '已配送')], string='状态',
+                              default='待下发')
+
+    @api.depends('task_delivery_time', 'task_completion_time')
+    def _compute_delivery_time(self):
+        for obj in self:
+            if obj.task_delivery_time and obj.task_completion_time:
+                delivery_duration = obj.task_completion_time - obj.task_delivery_time
+                hours, seconds = divmod(delivery_duration.total_seconds(), 3600)
+                minutes, _ = divmod(seconds, 60)
+                delivery_time_str = "{:.0f}时 {:.0f}分".format(hours, minutes)
+
+                obj.delivery_time = delivery_time_str
+            else:
+                obj.delivery_time = ''