使用猫鼬填充时返回空的帖子数组

Question

我正在尝试获取特定用户的帖子。它给我发了空的帖子。这是我的代码。我想我已经正确地引用了所有内容，肯定有一些错误。

User model

const Schema = mongoose.Schema

const userSchema = new Schema({
    username: { type: String, required: true },
    email: { type: String, reuired: true },
    password: { type: String, required: true },
    posts:[{ type: Schema.Types.ObjectId, ref: "Posts" }]
}, { timestamps: true })

Post model

const Schema = mongoose.Schema;

const postSchema = new Schema({
  title: { type: String, required: true },
  content: { type: String, required: true },
  user: { type: Schema.Types.ObjectId, ref: "User" },
}, { timestamps: true }

router.get("/posts/:id", usersController.getUserPosts)

    getUserPosts: (req, res) => {
        User.findById(req.params.id, async (err, user) => {
            if (err) {
                return res.status(500).json({ error: "Server error" })
            } else if (!user) {
                return res.status(400).json({ error: "No user" })
            } else if (user) {
                user = await User.populate("user", {
                  path: "posts",
                  model: "Post"
              })
            return res.status(200).json({ user })
         }
      })
    }

编辑

数据库中的用户是：

/users/list

{
    "users": [
        {
            "posts": [],
            "_id": "5e66496fcaf5d6697ca3fdbc",
            "username": "JimmyPage",
            "email": "[email protected]",
            "password": "$2b$10$mu0IcHADj5YVIT/66EEfPOxL3cvEjqDsnJUcrST8ZcatTOcQ42kn6",
            "createdAt": "2020-03-09T13:49:35.834Z",
            "updatedAt": "2020-03-09T13:49:35.834Z",
            "__v": 0
        },
        {
            "posts": [],
            "_id": "5e66499fcaf5d6697ca3fdbe",
            "username": "AxlRose",
            "email": "[email protected]",
            "password": "$2b$10$H3X3efz02RonlvNXaRPr2eEbflSiFK1ITFdbyT2igUGDK9gDpIJqO",
            "createdAt": "2020-03-09T13:50:23.702Z",
            "updatedAt": "2020-03-09T13:50:23.702Z",
            "__v": 0
        }
    ]
}

帖子看起来像这样：

/posts/list

{
    "posts": [
        {
            "_id": "5e66498ccaf5d6697ca3fdbd",
            "title": "Jimmy Page's post",
            "description": "This is Jimmy Page's post",
            "user": {
                "posts": [],
                "_id": "5e66496fcaf5d6697ca3fdbc",
                "username": "JimmyPage",
                "email": "[email protected]",
                "password": "$2b$10$mu0IcHADj5YVIT/66EEfPOxL3cvEjqDsnJUcrST8ZcatTOcQ42kn6",
                "createdAt": "2020-03-09T13:49:35.834Z",
                "updatedAt": "2020-03-09T13:49:35.834Z",
                "__v": 0
            },
            "createdAt": "2020-03-09T13:50:04.840Z",
            "updatedAt": "2020-03-09T13:50:04.840Z",
            "__v": 0
        },
        {
            "_id": "5e6649b5caf5d6697ca3fdbf",
            "title": "Axl Rose's Post",
            "description": "This is Axl Rose's Post",
            "user": {
                "posts": [],
                "_id": "5e66499fcaf5d6697ca3fdbe",
                "username": "AxlRose",
                "email": "[email protected]",
                "password": "$2b$10$H3X3efz02RonlvNXaRPr2eEbflSiFK1ITFdbyT2igUGDK9gDpIJqO",
                "createdAt": "2020-03-09T13:50:23.702Z",
                "updatedAt": "2020-03-09T13:50:23.702Z",
                "__v": 0
            },
            "createdAt": "2020-03-09T13:50:45.751Z",
            "updatedAt": "2020-03-09T13:50:45.751Z",
            "__v": 0
        },
        {
            "_id": "5e664b7bf120ab6c0d9999c9",
            "title": "Jimmy Page's second post",
            "description": "This is Jimmy Page's second post\n\n",
            "user": {
                "posts": [],
                "_id": "5e66496fcaf5d6697ca3fdbc",
                "username": "JimmyPage",
                "email": "[email protected]",
                "password": "$2b$10$mu0IcHADj5YVIT/66EEfPOxL3cvEjqDsnJUcrST8ZcatTOcQ42kn6",
                "createdAt": "2020-03-09T13:49:35.834Z",
                "updatedAt": "2020-03-09T13:49:35.834Z",
                "__v": 0
            },
            "createdAt": "2020-03-09T13:58:19.261Z",
            "updatedAt": "2020-03-09T13:58:19.261Z",
            "__v": 0
        }
    ]
}

我已在问题中添加以上代码。我一直被困在这个位置，就像我试图在他的个人资料中显示用户的帖子，并打算显示所显示的所有用户帖子的全局供稿一样。

如果您能帮助我，那将很棒。我会很感激的。谢谢。

Answer 1

您可以使用以下方法获取用户信息及其帖子。

getUserPosts: async (req, res) => {
  try {
    const user = await User.findById(req.params.id).populate("posts");

    if (!user) {
      return res.status(400).json({ error: "No user" });
    }

    return res.status(200).json({ user });
  } catch (err) {
    return res.status(500).json({ error: "Server error" });
  }
};