第一篇文章在这里，所以大家好！
我在mongoose填充上遇到了麻烦，因为它显然什么也没做。我直接去代码。
以下是我的模型：
空格键

const spaceSchema = Schema(
    {
        user: {
            type: Schema.Types.ObjectId,
            required: true,
            ref: "User",
        },
        name: {
            type: String,
            required: true,
        },
        days: [{ type: Schema.Types.ObjectId, refPath: "Day" }],
    },
    {
        versionKey: false,
            timestamps: true 
        },
);

const Space = mongoose.model("Space", spaceSchema);

module.exports = Space;

日

const daySchema = Schema(
    {
        space: { type: Schema.Types.ObjectId, refPath: "Space" },
        date: {
            type: String,
            required: true,
        },
        water: {
            type: Boolean,
        },
        fertilizer: {
            type: Boolean,
        },
        transplant: {
            type: Boolean,
        },
        comment: {
            type: String,
        },
    },
    {
        versionKey: false,
            timestamps: true 
        },
);

const Day = mongoose.model("Day", daySchema);

module.exports = Day;

在控制器的一部分中，我有getSpace路由（/api/spaces/：id）：

const getSpace = asyncHandler(async (req, res) => {
    const space = await Space.findById(req.params.id).populate("days");
    res.status(200).json(space);
});

这是我得到的结果：

{
    "_id": "63580115978dbf8f2f5a7a50",
    "user": "63501ab84613855834daa4ef",
    "name": "spaceName",
    "days": []
}

我试了很多方法，但结果都一样。
如果你还需要密码的其他部分，请告诉我。
谢谢大家：D
我希望结果看起来像这样

"space": {
        "_id": "63580115978dbf8f2f5a7a50",
        "user": "63501ab84613855834daa4ef",
        "name": "spaceName",
        "days": [
            {
                "_id": "63581af565aed8cad3210046",
                "space": "63580115978dbf8f2f5a7a50",
                "date": "29/10/2022",
                "water": true,
                "fertilizer": true,
                "transplant": false,
                "comment": "This is a comment.",
                "createdAt": ...,
                "updatedAt": ...
            },
            {
                "_id": "63581af565aed8cad3210046",
                "space": "63580115978dbf8f2f5a7a50",
                "date": "29/10/2022",
                "water": false,
                "fertilizer": false,
                "transplant": true,
                "comment": "This is a comment.",
                "createdAt": ...,
                "updatedAt": ...
            }
        ]
    }