Question

我在数据下载csv中遇到了一些问题，我想将[object Object]更改为文件csv中的字符串。但是我有尝试代码的结果是不确定的。

这是我的JSON格式，我仅使用一个示例数据

[
  {
    "id": 117,
    "code": "RR123",
    "dueDate": "2018-06-25T09:51:00",
    "isActive": true,
    "inspectors": {
      "id": 67,
      "employeeNumber": "18001",
      "name": "Larks Anderson",
      "isActive": true
    },
    "questioners": {
      "id": 63,
      "code": "PI190",
      "name": "Inspeksi Door",
      "isActive": true,
      "questionerDetails": [
      {
          "id": 124,
          "questionDetail": "",
          "isActive": true
        }
      ]
    }
  },
]

这是我在component.ts中的代码

//Button CSV
getcsvFile() {
  this.workorderService.getAllWorkOrder().subscribe(data => {
    this.allpagingData = [];
    let questionerlabel: any;

    for (let index in data) {
      console.log(data[index].questioners);

     //i use this to change the [object Object], but the result is undefined in csv
      for (let ai in data[index].questioners) {
        questionerlabel = data[index].questioners[ai].name;
        console.log(questionerlabel);
      }

      this.allpagingData.push({
        "code": data[index].code,
        "inspectors": data[index].inspectors,
        "questioners": questionerlabel,
        "dueDate": data[index].dueDate,
        "isActive": data[index].isActive
      });
    }
    var option = {
      fieldSeparator: ',',
      quoteStrings: '"',
      decimalseparator: '.',
      showLabels: true,
      showTitle: true,
      headers: ['WO Code' , 'Inspectors', 'Questioner', 'Date', 'Status']
    }

    new Angular2Csv(this.allpagingData, 'WorkOrder Report', option)
  });
}

那么如何将[object Object]更改为字符串？

Answer 1

使用JSON.stringify(object)，它将把您的对象变成人类可读的JSON。不过，不是很确定那就是您想要的。

Answer 2

您需要将“检查器”转换为字符串。所以像这样使用JSON.stringify（object）

    this.allpagingData.push({
    "code": data[index].code,
    "inspectors": data[index].inspectors ? JSON.stringify(data[index].inspectors) : '',
    "questioners": questionerlabel ? questionerlabel : 'N/A',
    "dueDate": data[index].dueDate,
    "isActive": data[index].isActive
     });

仅提供检查员姓名：

    this.allpagingData.push({
    "code": data[index].code,
    "inspectors": data[index].inspectors ? data[index].inspectors.name : '',
    "questioners": questionerlabel ? questionerlabel : 'N/A',
    "dueDate": data[index].dueDate,
    "isActive": data[index].isActive
     });

Answer 3

以下是解决未定义和[object object]错误的最佳答案


          yourdata.forEach((x, len) => {
            if (x.length === undefined) {
              x.values = JSON.stringify(x.values);
            }
            else {

              let nfvdata = "";
              let nfvobject = {};
              x.forEach(y => {
                if (typeof (y) === "string") {
                  nfvobject["questioners"] = y;

                }
                else if (y["questioners"] == undefined) {
                  nfvdata = nfvdata + JSON.stringify(y)
                  nfvobject["questionerDetails"] = nfvdata;
                }

                else {
                  //yourdata.push(y);
                }

              });
               yourdata.splice(len, 1, nfvobject);
              // yourdata.push(nfvobject);
            }
          });
          let record = yourdata[1] == undefined ? dataSet["data"] : dataSet["data"][1];
          this.csvOptions.headers = Object.keys(record);
          new AngularCsv(yourdata, this.Filename, this.csvOptions);

这是另一种像您一样处理JSON的方法

 yourdata.forEach((x, len) => {
            if (x.length === undefined) {
              x.values = JSON.stringify(x.values);
            }
            else {
              yourdata.splice(len, 1);
              x.forEach(y => {
                yourdata.push(y);
              })
            }
          });

          let record = yourdata[1] == undefined ? yourdata : yourdata[1];
          this.csvOptions.headers = Object.keys(record);
          new AngularCsv(dataSet["data"], this.Filename, this.csvOptions);
        }

将[object Object]更改为angular 2中的字符串下载csv

3 个答案: