我尝试检查 if else 条件然后尝试查找数据，首先我使用一种聚合方法而不是我从这个聚合中收集 id 然后再次尝试使用查找这个 id 但数据没有来
//const { default: mongoose } = require("mongoose"); const GetOrderBySingleSellerService = async (req, model) =\> { try { let ID = mongoose.Types.ObjectId(req.params.id); let data = await model.aggregate(\[ { $match: { sellerID: ID, }, }, { $lookup: { from: "become-a-sellers", localField: "sellerID", foreignField: "\_id", as: "orderinfo", pipeline:\[ { $project:{ sellerNationalityID:1, sellerProfilePhoto:1, kitchenImages:1, kitchenName:1, sellerNationality:1, sellerNationalityByBorn:1 } } \] }, }, { $lookup:{ from:"users", localField:"customerID", foreignField:"\_id", as:"userInfo", pipeline:\[ { $project:{ userFullName:1, userName:1, userEmail:1, userMobileNo:1, userPhoto:1, zipCode:1 } } \] } }, { $lookup: { from: "addressbooks", localField: "orderDeliveryAddressID", foreignField: "\_id", as: "deliveryAddress", pipeline: \[ { $project: { cityID: 1, regionID: 1, countryID: 1, // addressText: 1, // addressType: 1, // shippingDefault: 1, // billingDefault: 1, // latitude: 1, // logitude: 1, // zipCode: 1, // status: 1, // deliveryAddress:0 }, }, \], }, }, { $lookup: { from: "addressbooks", localField: "orderBillingAddressID", foreignField: "\_id", as: "billingAddress", pipeline: \[ { $project: { cityID: 1, regionID: 1, countryID: 1, // addressText: 1, // addressType: 1, // shippingDefault: 1, // billingDefault: 1, // latitude: 1, // logitude: 1, // zipCode: 1, // status: 1 }, }, \], }, }, { $lookup:{ from: "orderstatuses", localField: "orderStatusID", foreignField: "\_id", as: "orderStatus", } }, { $lookup:{ from:"citys", localField :"deliveryAddress.cityID", foreignField:"\_id", as:"deliveryAddressCity", pipeline:\[ { $project:{ cityName:1 } } \] } }, { $lookup:{ from:"citys", localField :"billingAddress.cityID", foreignField:"\_id", as:"billingAddressCity", pipeline:\[ { $project:{ cityName:1 } } \] } }, { $lookup:{ from:"countries", localField: "deliveryAddress.countryID", foreignField:"\_id", as:"deliveryAddressCountry", pipeline:\[ { $project:{ countryName:1, countryCode:1, countryCapital:1 } } \] } }, { $lookup:{ from:"countries", localField: "billingAddress.countryID", foreignField:"\_id", as:"billingAddressCountry", pipeline:\[ { $project:{ countryName:1, countryCode:1, countryCapital:1 } } \] } }, { $lookup:{ from:"regionstates", localField:"deliveryAddress.regionID", foreignField:"\_id", as:"deliveryAddressRegion", pipeline:\[ { $project:{ regionName:1 } } \] } }, { $lookup:{ from:"regionstates", localField:"billingAddress.regionID", foreignField:"\_id", as:"billingAddressRegion", pipeline:\[ { $project:{ regionName:1 } } \] } } \]); if(data\[0\].deliveryAddress\[0\].cityID=="63e8b32a798c4de2d1ba6c3d") { // hare not return lookup data let data1 = await model.aggregate(\[ { $lookup:{ from:"citys", localField :"data\[0\].deliveryAddress\[0\].cityID", foreignField:"\_id", as:"deliveryAddressCity", pipeline:\[ { $project:{ cityName:1 } } \] } } \]) console.log("from data1",data1) } else{ console.log("no"); } return { status: "Success", data: data }; } catch (e) { return { status: "Fail", data: e }; } }; module.exports = GetOrderBySingleSellerService;