feat: Project通过关联查询出来所有子表审批单记录的金额总和来计算已花费金额以及剩余预算余额

app/model/ProjectModel.py

@@ -1,11 +1,13 @@
 from decimal import Decimal
-from typing import Optional
+from typing import Optional, List
 
-from pydantic import computed_field, PrivateAttr
-from sqlmodel import Field, Relationship
+from pydantic import computed_field
+from sqlalchemy.orm import selectinload
+from sqlmodel import Field, Relationship, select
 
 from app.model.BasicModel import BasicModel
 from app.model.UserModel import UserServiceModel
+from app.utils.create_module_service import create_model_service
 
 
 class ProjectModel(BasicModel, table=True):
@@ -13,12 +15,9 @@ class ProjectModel(BasicModel, table=True):
 
   name: str = Field(default=None, description="项目名称")
   description: str = Field(default=None, description="项目描述")
-  budget: float = Field(default=None, description="项目预算金额")
+  budget: Decimal = Field(default=None, description="项目预算金额")
   version: int = Field(default=None, description="项目版本号")
 
-  spent: Decimal = Field(default=None, description="项目花费金额")
-  balance: Decimal = Field(default=None, description="项目预算余额")
-
   # /*---------------------------------------leader_id-------------------------------------------*/
 
   leader_id: str = Field(
@@ -47,3 +46,52 @@ class ProjectModel(BasicModel, table=True):
   @leader_name.setter
   def leader_name(self, value: Optional[str]) -> None:
     pass
+
+  # /*---------------------------------------approve_list-------------------------------------------*/
+
+  approve_list_relationship: Optional[List["ApproveModel"]] = Relationship(
+    sa_relationship_kwargs={
+      "foreign_keys": "ApproveModel.proj_id",
+      "primaryjoin": "ProjectModel.id == ApproveModel.proj_id",
+    }
+  )
+
+  # /*---------------------------------------spent: 已花费金额-------------------------------------------*/
+  @computed_field
+  @property
+  def spent(self) -> Optional[Decimal]:
+    try:
+      total_amount = Decimal(0)
+      for approve_item in self.approve_list_relationship:
+        if approve_item.status == 'approved':
+          total_amount = total_amount + approve_item.amount
+      return total_amount
+    except:
+      return None
+
+  @spent.setter
+  def spent(self, value: Optional[Decimal]) -> None:
+    pass
+
+  # /*---------------------------------------balance：剩余预算金额-------------------------------------------*/
+  @computed_field
+  @property
+  def balance(self) -> Optional[Decimal]:
+    if self.spent is not None:
+      return self.budget - self.spent
+    else:
+      return None
+
+  @balance.setter
+  def balance(self, value: Optional[Decimal]) -> None:
+    pass
+
+
+ProjectService = create_model_service(
+  Cls=ProjectModel,
+  custom_query=lambda: select(ProjectModel)
+  .options(
+    selectinload(ProjectModel.leader),
+    selectinload(ProjectModel.approve_list_relationship)
+  ),
+)

app/model/ProjectService.py

@@ -1,58 +0,0 @@
-from decimal import Decimal
-from typing import List
-
-from sqlalchemy.orm import selectinload
-from sqlmodel import select
-
-from app.model.ApproveModel import ApproveService, ApproveModel
-from app.model.ProjectModel import ProjectModel
-from app.utils.create_module_service import create_model_service
-from app.utils.db_utils import AsyncSessionDep
-
-ProjectService = create_model_service(
-  Cls=ProjectModel,
-  custom_query=lambda: select(ProjectModel).options(
-    selectinload(ProjectModel.leader),
-  ),
-  after_query_list=lambda query_cls_list, has_next, query_param, session: set_list_spent(query_cls_list, session),
-  after_query_item=lambda item_cls, row_dict, session: set_item_spent(item_cls, session),
-  after_insert=lambda insert_cls, row_dict, session: set_item_spent(insert_cls, session),
-  after_update=lambda update_cls, row_dict, session: set_item_spent(update_cls, session),
-  after_batch_insert=lambda refresh_cls_list, row_dict_list, session: set_list_spent(refresh_cls_list, session),
-  after_batch_update=lambda refresh_cls_list, row_dict_list, session: set_list_spent(refresh_cls_list, session),
-)
-
-async def set_list_spent(cls_list: List[ProjectModel], session: AsyncSessionDep):
-  project_dict_list, project_dict_map = await query_proj_spent([item.id for item in cls_list], session)
-  for item in cls_list:
-    target = project_dict_map.get(item.id, None)
-    if target:
-      item.spent = target['spent']
-      item.balance = target['balance']
-
-
-async def set_item_spent(cls: ProjectModel, session: AsyncSessionDep):
-  project_dict_list, project_dict_map = await query_proj_spent([cls.id], session)
-  target = project_dict_map.get(cls.id, None)
-  if target:
-    cls.spent = target['spent']
-    cls.balance = target['balance']
-
-
-async def query_proj_spent(proj_id_list: List[str], session: AsyncSessionDep):
-  result = {item: Decimal(0) for item in proj_id_list}
-  approve_cls_list = (await session.execute(ApproveService.select_cls().where(ApproveModel.proj_id.in_(proj_id_list)))).scalars().all()
-  for approve_item in approve_cls_list:
-    if approve_item.status == 'approved':
-      result[approve_item.proj_id] += Decimal(approve_item.amount)
-
-  project_cls_list = (await session.execute(ProjectService.select_cls().where(ProjectModel.id.in_(proj_id_list)))).scalars().all()
-  project_dict_list = [item.model_dump() for item in project_cls_list]
-  for dict_item in project_dict_list:
-    # 已花费金额
-    dict_item['spent'] = result[dict_item['id']]
-    # 剩余金额
-    dict_item['balance'] = Decimal(dict_item['budget']) - Decimal(dict_item['spent'])
-  project_dict_map = {item['id']: item for item in project_dict_list}
-
-  return project_dict_list, project_dict_map