试图用数组本身过滤对象数组答案

【问题标题】：trying to filter array of objects with array in itself试图用数组本身过滤对象数组
【发布时间】：2021-05-09 07:19:56
【问题描述】：

我像这样过滤一组对象：

[
{
  "Username":"00d9a7f4-0f0b-448b-91fc-fa5aef314d06",
  "Attributes":[
     {
        "Name":"custom:organization",
        "Value":"zxc"
     },
     {
        "Name":"sub",
        "Value":"00d9a7f4-0f0b-448b-91fc-fa5aef314d06"
     },
     {
        "Name":"email_verified",
        "Value":"false"
     },
     {
        "Name":"email",
        "Value":"zigor@freeallapp.com"
     }
  ],
  "UserCreateDate":"2021-02-04T17:59:28.212Z",
  "UserLastModifiedDate":"2021-02-04T17:59:28.212Z",
  "Enabled":true,
  "UserStatus":"UNCONFIRMED"
},
{
  "Username":"07c16a30-b994-4267-9794-6fb20739abeb",
  "Attributes":[
     {
        "Name":"custom:organization",
        "Value":"asd"
     },
     {
        "Name":"sub",
        "Value":"07c16a30-b994-4267-9794-6fb20739abeb"
     },
     {
        "Name":"email_verified",
        "Value":"false"
     },
     {
        "Name":"email",
        "Value":"2marwan.khatar.39@dankq.com"
     }
  ],
  "UserCreateDate":"2021-02-04T17:56:13.787Z",
  "UserLastModifiedDate":"2021-02-04T17:56:13.787Z",
  "Enabled":true,
  "UserStatus":"UNCONFIRMED"
},

以下是精细过滤

let filterarry;
filterarry = jsonObject.filter(Attributes => {
  return Attributes.Enabled == true && Attributes.UserStatus == 'UNCONFIRMED';
});
console.log(filterarry);

我正在尝试按具有以下属性的属性进行过滤：具有 custom:organization 和值 zxc 的属性我该怎么做？？

"Attributes":[
 {
    "Name":"custom:organization",
    "Value":"zxc"
 },

我尝试了几种方法，但我在输出中得到了空数组谢谢

【问题讨论】：

标签： javascript arrays typescript filter

【解决方案1】：

你可以这样做：

let output = jsonObject.filter(entry => {
    // filter the internal array and check
    if (entry.Attributes.filter(attr => attr.Name === 'custom:organization' && attr.Value === 'zxc').length !== 0) {
        return true;
    }
    return false;
});

另请参阅：https://stackoverflow.com/a/8217584/14133230

【讨论】：

它似乎是正确的，但它正在打印每条记录，无论值是 zxc 还是任何其他
我的输出没有爆炸属性对象{ Username: 'ee558aa7-648b-403d-8464-b4da1081a8b9', Attributes: [ [Object], [Object], [Object], [Object] ], UserCreateDate: '2021-02-04T17:59:38.733Z', UserLastModifiedDate: '2021-02-04T17:59:38.733Z', Enabled: true, UserStatus: 'UNCONFIRMED' }
您只需要属性对象吗？这将返回具有至少一个与过滤器匹配的属性的整个用户。此外，[Object] 是由于最大深度而隐藏对象的节点检查器。如果是 Node.js，则运行 console.log(require('util').inspect(output, { colors: true, depth: Infinity }))

【解决方案2】：

要过滤jsonObject.Attributes，您需要重新创建变量

let filterarry = jsonObject.filter(item => {
  item.Attributes = item.Attributes.filter(attr => {
    return attr.Name == "custom:organization" && attr.Value == "zxc"
  })

  // return true => to remove only value of jsonObject.Attributes but not the parent
  return item.Attributes.length;
});

结果

[
  {
    "Username": "00d9a7f4-0f0b-448b-91fc-fa5aef314d06",
    "Attributes": [
      {
        "Name": "custom:organization",
        "Value": "zxc"
      }
    ],
    "UserCreateDate": "2021-02-04T17:59:28.212Z",
    "UserLastModifiedDate": "2021-02-04T17:59:28.212Z",
    "Enabled": true,
    "UserStatus": "UNCONFIRMED"
  }
]

【讨论】：

它缺少属性数组中的其他对象。

【解决方案3】：

你可以试试这个

const oObjects = [{
    "Username": "00d9a7f4-0f0b-448b-91fc-fa5aef314d06",
    "Attributes": [{
        "Name": "custom:organization",
        "Value": "zxc"
      },
      {
        "Name": "sub",
        "Value": "00d9a7f4-0f0b-448b-91fc-fa5aef314d06"
      },
      {
        "Name": "email_verified",
        "Value": "false"
      },
      {
        "Name": "email",
        "Value": "zigor@freeallapp.com"
      }
    ],
    "UserCreateDate": "2021-02-04T17:59:28.212Z",
    "UserLastModifiedDate": "2021-02-04T17:59:28.212Z",
    "Enabled": true,
    "UserStatus": "UNCONFIRMED"
  },
  {
    "Username": "07c16a30-b994-4267-9794-6fb20739abeb",
    "Attributes": [{
        "Name": "custom:organization",
        "Value": "asd"
      },
      {
        "Name": "sub",
        "Value": "07c16a30-b994-4267-9794-6fb20739abeb"
      },
      {
        "Name": "email_verified",
        "Value": "false"
      },
      {
        "Name": "email",
        "Value": "2marwan.khatar.39@dankq.com"
      }
    ],
    "UserCreateDate": "2021-02-04T17:56:13.787Z",
    "UserLastModifiedDate": "2021-02-04T17:56:13.787Z",
    "Enabled": true,
    "UserStatus": "UNCONFIRMED"
  },
];


const filterarry = oObjects.filter(attr => {
  return attr.Enabled &&
    attr.UserStatus === 'UNCONFIRMED' &&
    attr.Attributes.some(p => p.Name === "custom:organization" && p.Value === "zxc");
});
console.log(filterarry);

【讨论】：