文件版本管理-初步优化

backend/app/crud/workflow_template.py

@@ -0,0 +1,26 @@
+import uuid
+from typing import Sequence
+
+from sqlalchemy import select
+from sqlalchemy.orm import selectinload
+
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.workflow_template import WorkflowTemplate
+
+
+async def get(db: AsyncSession, template_id: uuid.UUID) -> WorkflowTemplate | None:
+    result = await db.execute(select(WorkflowTemplate).where(WorkflowTemplate.id == template_id))
+    return result.scalar_one_or_none()
+
+
+async def list_active(db: AsyncSession, trial_id: uuid.UUID | None = None) -> Sequence[WorkflowTemplate]:
+    stmt = (
+        select(WorkflowTemplate)
+        .where(WorkflowTemplate.is_active.is_(True))
+        .options(selectinload(WorkflowTemplate.nodes))
+    )
+    if trial_id:
+        stmt = stmt.where(WorkflowTemplate.trial_id == trial_id)
+    result = await db.execute(stmt)
+    return result.scalars().all()