added image_name to PlateOrder model

printing/models.py

@@ -16,6 +16,7 @@ class PlateOrder(ModelBase):
     plate_date = models.DateTimeField(null=True, blank=True, verbose_name='下版时间')
     plate_method = models.CharField(max_length=50, blank=True, null=True, verbose_name='开版方式')
     plate_image = models.FileField(upload_to='plate_images/', null=True, blank=True, verbose_name='开版图')
+    image_name = models.CharField(max_length=100, blank=True, null=True, verbose_name='图片名称')
     plate_notes = models.TextField(blank=True, null=True, verbose_name='打版注意事项')
     reprint_reason = models.TextField(blank=True, null=True, verbose_name='复版原因')
     
@@ -113,10 +114,17 @@ class PlateOrder(ModelBase):
         """保存时自动创建 BusinessObject"""
         # 先保存以获取 ID（如果是新建）
         is_new = self.pk is None
+        update_fields = kwargs.get('update_fields')
         super().save(*args, **kwargs)
         
+        should_auto_create = (
+            self.process
+            and not self.business_object
+            and (is_new or update_fields is None or 'process' in (update_fields or []))
+        )
+
         # 如果有 process 且没有 business_object，则自动创建
-        if self.process and not self.business_object:
+        if should_auto_create:
             try:
                 from stateflow.models import Process
                 process_obj = Process.objects.get(id=self.process)