feat: improve for report

api_v1/views/stateflow/business_object.py

@@ -6,6 +6,7 @@ from rest_framework.decorators import action
 from rest_framework.response import Response
 from django_filters.rest_framework import DjangoFilterBackend
 from django_filters import rest_framework as django_filters
+from django.db.models import Exists, OuterRef
 
 from flower.viewsets import LimitedModelViewSet
 from stateflow import models, services
@@ -30,6 +31,40 @@ class BusinessObjectFilterSet(django_filters.FilterSet):
     )
     content_type_str = django_filters.CharFilter(method='filter_content_type')
     has_content_object = django_filters.BooleanFilter(method='filter_has_content_object')
+
+    # 按“已完成的 state_id + 参数 key/value”反查 BusinessObject
+    #
+    # 说明：
+    # - stateflow 的工艺参数保存在 StateLogParameterRecord.parameters(JSONField)，并挂在某次 StateFlowRecord（完成某节点）之下
+    # - 本过滤器只匹配“未撤销”的 StateFlowRecord（is_cancelled=False）
+    # - 为避免意外放宽查询范围：当提供了 state_id 但缺少 param_key/param_value 时，返回空结果
+    state_id = django_filters.NumberFilter(method='filter_completed_state_param')
+    param_key = django_filters.CharFilter(method='noop')
+    param_value = django_filters.CharFilter(method='noop')
+
+    def noop(self, queryset, name, value):
+        """占位：param_key/param_value 仅作为 state_id 组合过滤的输入，不单独过滤"""
+        return queryset
+
+    def filter_completed_state_param(self, queryset, name, value):
+        """
+        过滤：存在未撤销的 StateFlowRecord(state_id=value)，且该 state_log 下存在参数记录满足 {param_key: param_value}
+        """
+        if value in (None, ''):
+            return queryset
+
+        param_key = (self.data.get('param_key') or '').strip()
+        param_value = (self.data.get('param_value') or '').strip()
+        if not param_key or not param_value:
+            return queryset.none()
+
+        matching_logs = models.StateFlowRecord.objects.filter(
+            business_object_id=OuterRef('pk'),
+            state_id=value,
+            is_cancelled=False,
+            parameter_records__parameters__contains={param_key: param_value},
+        )
+        return queryset.annotate(_has_state_param=Exists(matching_logs)).filter(_has_state_param=True)
     
     def filter_overall_status(self, queryset, name, value):
         """过滤整体状态"""
@@ -58,8 +93,17 @@ class BusinessObjectFilterSet(django_filters.FilterSet):
     
     class Meta:
         model = models.BusinessObject
-        fields = ['name', 'process', 'process_name', 'overall_status', 
-                  'content_type_str', 'has_content_object']
+        fields = [
+            'name',
+            'process',
+            'process_name',
+            'overall_status',
+            'content_type_str',
+            'has_content_object',
+            'state_id',
+            'param_key',
+            'param_value',
+        ]
 
 
 class BusinessObjectViewSet(LimitedModelViewSet):