javascript - 如何在 nodejs 上使用对象 jSON 数据进行嵌套循环

Question

我是 nodejs 和 mongodb 的新手，现在我使用 nodejs 和 mongodb 构建 restful API。我想为我的 API 使用响应标准 http://jsonapi.org标准。

我需要高级建议如何最好地做到这一点，使我的 API 响应类似于以下 JSON 数据:

HTTP/1.1 200 OK
Content-Type: application/vnd.api+json

{
  "links": {
    "self": "http://example.com/users"
  },
  "data": [{
    "type": "users",
    "id": 5b647bb8998248235a0aab3c,
    "attributes": {
      "username": "luke",
      "email": "luke@mail.com",
      "password": "password",
      "hashpassword":"",
      "oldpassword":"$2a$10$eyt6YV6m2JJrebNxvS0iEuxMCubDXratNJ6/XK797IGvepXBdp9Yq",
      "salt":"2q6eN9U0vWFBsIF1MtB5WrgPiB8pldTS",
      "usertype":"bisnis",
      "userstatus":"not aktif"
    }
  }, {
    "type": "users",
    "id": 5b647bdf998248235a0aab3d,
    "attributes": {
      "username": "ken",
      "email": "ken@mail.com",
      "password": "password",
      "hashpassword":"",
      "oldpassword":"$2a$10$eyt6YV6m2JJrebNxvS0iEuxMCubDXratNJ6/XK797IGvepXBdp9Yq",
      "salt":"2q6eN9U0vWFBsIF1MtB5WrgPiB8pldTS",
      "usertype":"bisnis",
      "userstatus":"not aktif"
    }
  }]
}

如上创建输出时，嵌套迭代出现问题。这是我的代码:

const UsersModel = mongoose.model('Users');

//...show list user
exports.listUsers = (req, res) => {
  UsersModel.find({}, (err, result) => {
    if (err) {
      res.send({code: 400, failed: 'Error 400'});
    }
    res.json(result);
  });
};

这是我的结果 JSON:

[
    {
        "type": "users",
        "userstatus": "not aktif",
        "_id": "5b647bb8998248235a0aab3c",
        "username": "luke",
        "email": "luke@mail.com",
        "password": "password",
        "usertype": "bisnis",
        "hashpassword": "$2a$10$eyt6YV6m2JJrebNxvS0iEuxMCubDXratNJ6/XK797IGvepXBdp9Yq",
        "salt": "2q6eN9U0vWFBsIF1MtB5WrgPiB8pldTS",
        "__v": 0
    },
    {
        "type": "users",
        "userstatus": "tidak aktif",
        "_id": "5b647bdf998248235a0aab3d",
        "username": "ken",
        "email": "ken@mail.com",
        "password": "password",
        "usertype": "personal",
        "hashpassword": "$2a$10$hok988mszyIBiXVNjmfifOiPNzXkBRRRynXJS/0qCkvlaBOQs65MO",
        "salt": "IiMvtVYVqTpZFXmYQIM4IlS6PJFVZ3kw",
        "__v": 0
    }
]

这是我解决问题的临时代码。

//...show list user
exports.listUsers = (req, res) => {
    UsersModel.find({}, (err, result) => {
      if (err) {
        res.send({code: 400, failed: 'Error 400'});
      }

      let listData  = [];

      for (let key in result) {
        let data = {};
        let attr = {};

        if (result.hasOwnProperty(key)) {
          data.type = result[key].type;
          data.id = result[key]._id;

          for(let i in result[key]) {

            if(result[key].hasOwnProperty(i)) {
              attr.username = result[key].username;
              attr.email = result[key].email;
              attr.password = result[key].password;
              attr.hashpassword = result[key].hashpassword;
              attr.oldpassword = result[key].oldpassword;
              attr.salt = result[key].salt;
              attr.usertype = result[key].usertype;
              attr.userstatus = result[key].userstatus;
            }
          }

          data.attribute = attr;
          listData.push(data);
        }

      }

      let collections = {
        "meta": {
          "copyright": "Copyright 2018 Kotakku Studio and Lab",
          "authors": [
            "sw. saputra"
          ]
        },
        "link": {
          "self": req.protocol + '://' + req.get('host') + req.originalUrl
        },
        "data": listData
      }

      res.json(collections);
    });
};

如果我的临时代码不正确，请给我建议解决问题的优雅和最佳方法。

提前致谢。

Answer 1

您需要根据您的要求创建一个合适的 mongoose 模式并将资源映射到该模式。

//Schema for users
var UsersSchema = mongoose.Schema({
 links: {
   self: String 
 },
  data:[{
    type: String,
    attributes: {
      username: String,
      .
      .
      .
    }
  }]
})

数组中每个文档的 id 将由 MongoDB 自动创建。对于 Mongoose 模式文档，请参阅 http://mongoosejs.com/docs/guide.html您还可以查看这个简单的 TODO API 以供引用 https://github.com/mkujaggi/node-course-todo-api