Adding ability to update / patch by sku, adding uniqueness constraint violation checks

app/api/static_connections.py

@@ -33,6 +33,8 @@ async def create_static_connection(
     db: AsyncSession = Depends(get_db),
     actor: User = Depends(require_permission("static_connections:write")),
 ):
+    if await static_connection_crud.get_by_od_mm(db, payload.od_mm):
+        raise HTTPException(status_code=409, detail="Static connection already exists")
     sc = await static_connection_crud.create(
         db, od_mm=payload.od_mm, od_in=payload.od_in
     )
@@ -72,6 +74,12 @@ async def update_static_connection(
     if sc is None:
         raise HTTPException(status_code=404, detail="Static connection not found")
     changes = payload.model_dump(exclude_unset=True)
+    if "od_mm" in changes:
+        existing = await static_connection_crud.get_by_od_mm(db, changes["od_mm"])
+        if existing is not None and existing.id != sc.id:
+            raise HTTPException(
+                status_code=409, detail="Static connection already exists"
+            )
     sc = await static_connection_crud.update(db, sc, changes)
     await audit_crud.log(
         db,