I want to loop through an array of objects and get all data of all of objects but only I only get the data of last object I'don't why it skips the first object , please any one could help me

Here is my array

item {
  _id: new ObjectId("627ed71261b2bd692178bdca"),
  sn: 'fN300W15076fd5bg6dwf',
  merchantId: '9000000058800',
  merchantName: '999',
  networkType: '220509',
  __v: 0,
  terminalId: '987654321',
  resultData: [
    {
      _id: new ObjectId("627edb194884d85b48890da8"),
      uniqueID: '68461616865',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '987654321',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'DECLINED',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    },
    {
      _id: new ObjectId("627edb494884d85b48890daa"),
      uniqueID: '71616516',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '987654321',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'DECLINED',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    },
    {
      _id: new ObjectId("627edb5c4884d85b48890dac"),
      uniqueID: '7117117717',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '987654321',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'APPROVED',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    },
    {
      _id: new ObjectId("627edb674884d85b48890dae"),
      uniqueID: '7117117717',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '987654321',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'PENDING',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    }
  ]
}
----------------------------------------------------
item {
  _id: new ObjectId("627ed78561b2bd692178bdd3"),
  sn: 'fN300W15076fd5bg6dwf',
  merchantId: '9000000058800',
  merchantName: '999',
  networkType: '220509',
  __v: 0,
  terminalId: '123456789',
  resultData: [
    {
      _id: new ObjectId("627edb884884d85b48890db0"),
      uniqueID: '97279279',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '123456789',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'GOOD',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    },
    {
      _id: new ObjectId("627edb994884d85b48890db2"),
      uniqueID: '928498452',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '123456789',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'DECLINED',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    },
    {
      _id: new ObjectId("627edba54884d85b48890db4"),
      uniqueID: '6824684294',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '123456789',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'DECLINED',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    },
    {
      _id: new ObjectId("627edbe0ade509d1bd9b5277"),
      uniqueID: '6824684294',
      transactionAmount: '050413',
      currencyCode: '9000000058800',
      terminalId: '123456789',
      transactionDate: '999',
      transactionTime: '220509',
      transactionType: 'DECLINED',
      cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
      onlineRetrievalReferenceNumber: '6161651613516',
      outcome: 'DONE',
      encryptionKeyKCV: '651616161616516',
      transactionEncrypted: 'SUHTHROTRTH161461'
    }
  ]
}
----------------------------------------------------
[
  {
    _id: new ObjectId("627edb884884d85b48890db0"),
    uniqueID: '97279279',
    transactionAmount: '050413',
    currencyCode: '9000000058800',
    terminalId: '123456789',
    transactionDate: '999',
    transactionTime: '220509',
    transactionType: 'GOOD',
    cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
    onlineRetrievalReferenceNumber: '6161651613516',
    outcome: 'DONE',
    encryptionKeyKCV: '651616161616516',
    transactionEncrypted: 'SUHTHROTRTH161461'
  },
  {
    _id: new ObjectId("627edb994884d85b48890db2"),
    uniqueID: '928498452',
    transactionAmount: '050413',
    currencyCode: '9000000058800',
    terminalId: '123456789',
    transactionDate: '999',
    transactionTime: '220509',
    transactionType: 'DECLINED',
    cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
    onlineRetrievalReferenceNumber: '6161651613516',
    outcome: 'DONE',
    encryptionKeyKCV: '651616161616516',
    transactionEncrypted: 'SUHTHROTRTH161461'
  },
  {
    _id: new ObjectId("627edba54884d85b48890db4"),
    uniqueID: '6824684294',
    transactionAmount: '050413',
    currencyCode: '9000000058800',
    terminalId: '123456789',
    transactionDate: '999',
    transactionTime: '220509',
    transactionType: 'DECLINED',
    cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
    onlineRetrievalReferenceNumber: '6161651613516',
    outcome: 'DONE',
    encryptionKeyKCV: '651616161616516',
    transactionEncrypted: 'SUHTHROTRTH161461'
  },
  {
    _id: new ObjectId("627edbe0ade509d1bd9b5277"),
    uniqueID: '6824684294',
    transactionAmount: '050413',
    currencyCode: '9000000058800',
    terminalId: '123456789',
    transactionDate: '999',
    transactionTime: '220509',
    transactionType: 'DECLINED',
    cardPAN_PCI: 'XXXXXXXXXXXXXXX166',
    onlineRetrievalReferenceNumber: '6161651613516',
    outcome: 'DONE',
    encryptionKeyKCV: '651616161616516',
    transactionEncrypted: 'SUHTHROTRTH161461'
  }
]

as you see I get only the array of last object

For who's curious how my code looks like

  async getLogByTPE() {
    let result;
    const data = await this.tpeModel
      .aggregate([
        {
          $lookup: {
            from: 'logs',
            localField: 'terminalId',
            foreignField: 'terminalId',
            as: 'resultData',
          },
        },
        // { $unwind: '$resultData' },
        // {
        //   $project: {
        //     uniqueID: '$logs.currenuniqueIDcyCode',
        //     terminalId: '$logs.terminalId',
        //     transactionAmount: '$logs.transactionAmount',
        //     currencyCode: '$logs.currencyCode',
        //     transactionDate: '$logs.transactionDate',
        //     transactionTime: '$logs.transactionTime',
        //     transactionType: '$logs.transactionType',
        //     cardPAN_PCI: '$logs.cardPAN_PCI',
        //     onlineRetrievalReferenceNumber:
        //       '$logs.onlineRetrievalReferenceNumber',
        //     outcome: '$logs.outcome',
        //     encryptionKeyKCV: '$logs.encryptionKeyKCV',
        //     transactionEncrypted: '$logs.transactionEncrypted',
        //   },
        // },
      ])
      .then((ok) => {
        //start of test
        // for (let i = 0; i <= ok.length; i  ) {
        //   console.log('ok', ok[i].resultData[i]);
        //   data1 = JSON.stringify(ok[i]);
        // }

        //end of test
        // console.log('OOOKKKK', ok);
        ok.forEach((item) => {
          console.log('item', item);
          console.log('----------------------------------------------------');
          //console.log('resultData', item.resultData);
          result = item.resultData;
          // result = item['resultData'].forEach((sub) => {
          //   console.log('sub', sub);
          //   return sub;
          // });
        });
      });

    // let subitemresult;
    // let result = data.forEach((item) => {
    //   console.log('item', item);
    //   console.log(
    //     'item.resultData',
    //     item.resultData.forEach((subitem) => {
    //       console.log('subitem', subitem);
    //     }),
    //   );
    // });
    // console.log('data', data);
    // console.log('result', JSON.stringify(result));
    console.log(result);
    return result;
  }






          
          

ok => my array of objects
item => objects inside of array
resultData => the data I want to get
unfortunately I only resultData of last object as shown above

CodePudding user response：

The result variable where you store the data inside the loop gets overrided on every iteration, so when you return, there is only the last value stored. A quick fix could be assign an empty array in your declaration on result

  let result: any = [];

Then inside the loop you could push to the array result. Change this result = item.resultData; for

  result.push(item.resultData);