feat: new api for plate order (get_plate_order_by_state_status)

stateflow/tests/test_step_back.py

@@ -3,6 +3,7 @@
 """
 from django.test import TestCase
 from django.contrib.auth import get_user_model
+from django.contrib.contenttypes.models import ContentType
 from stateflow import models, services
 
 User = get_user_model()
@@ -29,10 +30,13 @@ class StepBackTestCase(TestCase):
         models.ProcessNode.objects.create(process=self.process, state=self.state3, order=2)
         
         # 创建业务对象
+        process_ct = ContentType.objects.get_for_model(models.Process)
         self.business_object = models.BusinessObject.objects.create(
             name='测试业务对象',
             process=self.process,
-            description='测试回退功能'
+            description='测试回退功能',
+            content_type=process_ct,
+            object_id=self.process.id,
         )
     
     def test_step_back_from_not_started(self):