Node.js 斯特拉皮关系没有'；t返回正确的层次结构

我正在尝试创建以下关系模型：

Section has many categories
Categories has many sub-categories

因此，基本上我们有三个集合：

部分

类别

子类别

首先，我定义了

部分

和

类别

之间的关系：

然后，我在

类别

和

子类别

之间创建了一个关系：

我还填充了这些集合，当我调用

http://localhost:3002/sections

我得到：

[
    {
        "id": 1,
        "name": "ambition",
        "published_at": "2020-11-20T10:21:08.000Z",
        "created_at": "2020-11-20T11:21:06.000Z",
        "updated_at": "2020-12-01T10:26:44.000Z",
        "description": null,
        "featured_image": null,
        "categories": [],
        "subcategories": []
    },
    {
        "id": 2,
        "name": "the_tanning_of_the_future",
        "published_at": "2020-11-20T10:21:19.000Z",
        "created_at": "2020-11-20T11:21:18.000Z",
        "updated_at": "2020-12-01T10:27:15.000Z",
        "description": null,
        "featured_image": null,
        "categories": [],
        "subcategories": []
    },
    {
        "id": 3,
        "name": "living_sustainable",
        "published_at": "2020-11-20T10:21:28.000Z",
        "created_at": "2020-11-20T11:21:26.000Z",
        "updated_at": "2020-12-01T10:27:31.000Z",
        "description": null,
        "featured_image": null,
        "categories": [],
        "subcategories": []
    },
    {
        "id": 4,
        "name": "creativity",
        "published_at": "2020-11-20T10:21:36.000Z",
        "created_at": "2020-11-20T11:21:34.000Z",
        "updated_at": "2020-12-04T10:53:32.000Z",
        "description": null,
        "featured_image": null,
        "categories": [
            {
                "id": 1,
                "name": "Archivio",
                "published_at": "2020-11-20T10:57:34.000Z",
                "created_at": "2020-11-20T11:22:48.000Z",
                "updated_at": "2020-12-04T10:50:50.000Z",
                "subcategory": null,
                "feature_image": null
            },
            {
                "id": 2,
                "name": "Colori",
                "published_at": "2020-11-20T10:57:37.000Z",
                "created_at": "2020-11-20T11:22:55.000Z",
                "updated_at": "2020-12-03T11:55:11.000Z",
                "subcategory": null,
                "feature_image": null
            },
            {
                "id": 3,
                "name": "Lifestyle",
                "published_at": "2020-11-20T10:57:39.000Z",
                "created_at": "2020-11-20T11:23:02.000Z",
                "updated_at": "2020-12-03T11:55:20.000Z",
                "subcategory": null,
                "feature_image": null
            }
        ],
        "subcategories": [
            {
                "id": 1,
                "name": "Inverno 21",
                "published_at": "2020-12-03T15:16:57.000Z",
                "created_at": "2020-12-03T11:52:13.000Z",
                "updated_at": "2020-12-03T15:16:57.000Z",
                "category": 1,
                "description": null
            },
            {
                "id": 2,
                "name": "Estate 21",
                "published_at": "2020-12-03T11:54:42.000Z",
                "created_at": "2020-12-03T11:54:36.000Z",
                "updated_at": "2020-12-03T15:14:04.000Z",
                "category": 1,
                "description": null
            }
        ]
    }
]

从回答中可以看出，

部分

和

类别

之间的关系运行良好，但

类别

和

子类别

之间的关系不正常。事实上，我已经定义了这些模型之间的1:n关系，但我得到：

{
    "id": 4,
    "name": "creativity",
    "published_at": "2020-11-20T10:21:36.000Z",
    "created_at": "2020-11-20T11:21:34.000Z",
    "updated_at": "2020-12-04T10:53:32.000Z",
    "description": null,
    "featured_image": null,
    "categories": [
        {
            "id": 1,
            "name": "Archivio",
            "published_at": "2020-11-20T10:57:34.000Z",
            "created_at": "2020-11-20T11:22:48.000Z",
            "updated_at": "2020-12-04T10:50:50.000Z",
            "subcategory": null,
            "feature_image": null
        },

另一件奇怪的事情是，在仪表板内部，我实际上可以将子类别与所选的

类别关联起来，请参见：


因此，我的回应是：

{
    "id": 4,
    "name": "creativity",
    "published_at": "2020-11-20T10:21:36.000Z",
    "created_at": "2020-11-20T11:21:34.000Z",
    "updated_at": "2020-12-04T10:53:32.000Z",
    "description": null,
    "featured_image": null,
    "categories": [
        {
            "id": 1,
            "name": "Archivio",
            "published_at": "2020-11-20T10:57:34.000Z",
            "created_at": "2020-11-20T11:22:48.000Z",
            "updated_at": "2020-12-04T10:50:50.000Z",
            "subcategories": [
                ...
            ],
            "feature_image": null
        },

我是做错了什么，还是Strapi的关系引擎有问题