根据条件将 object 复制到另一个

Question

假设我有这个示例 object，如下所示，

let parentObj = {
  "SM": {
    "child_roles": {
      "SM#02": {
        "code": "SM#02",
        "assigned_info": [
          {
            "cur_assigned_to": "7486",
            "assigned_date": 1644483524,
            "assigned_fromdate": 1644517800,
            "assigned_todate": 1645122600,
          },
          {
            "cur_assigned_to": "3050",
            "assigned_date": 1656613800,
            "assigned_fromdate": 1658255400,
            "assigned_todate": 1659292200,
          }
        ]
      },
      "SM#03": {
        "code": "SM#03",
        "assigned_info": [
          {
            "cur_assigned_to": "7486",
            "assigned_date": 1644483638,
            "assigned_fromdate": 1644517800,
            "assigned_todate": 1645727400,
          },
          {
            "cur_assigned_to": "3050",
            "assigned_date": 1656613800,
            "assigned_fromdate": 1656613800,
            "assigned_todate": 1660069800,
          }
        ]
      },
      "SM#01": {
        "code": "SM#01",
        "assigned_info": []
      }
    }
  },
  "SMP": {
    "child_roles": {
      "SMP#01": {
        "code": "SMPR#01",
        "assigned_info": [
          {
            "cur_assigned_to": "7486",
            "assigned_date": 1644483672,
            "assigned_fromdate": 1644431400,
            "assigned_todate": 1645122600,
          }
        ]
      }
    }
  },
  "SMR": {
    "child_roles": {
      "SMR#01": {
        "code": "SMOR#01",
        "assigned_info": []
      },
      "SMOR#02": {
        "code": "SMOR#02",
        "assigned_info": []
      }
    }
  },
  "ANC": {
    "child_roles": {}
  }
}

现在有一个名为assigned_info的键，这是一个赋值信息的集合。 我想检查它是否包含 cur_assigned_to = 3050 的项目，然后复制该数组项目以及该 object 的其他属性。 对不起我的英语不好，换句话说，我想得到这个 output 如下所示，

let expectedObj = {
  "SM": {
    "child_roles": {
      "SM#02": {
        "code": "SM#02",
        "assigned_info": [
          {
            "cur_assigned_to": "3050",
            "assigned_date": 1656613800,
            "assigned_fromdate": 1658255400,
            "assigned_todate": 1659292200,
          }
        ]
      },
      "SM#03": {
        "code": "SM#03",
        "assigned_info": [
          {
            "cur_assigned_to": "3050",
            "assigned_date": 1656613800,
            "assigned_fromdate": 1656613800,
            "assigned_todate": 1660069800,
          }
        ]
      },
      "SM#01": {
        "code": "SM#01",
        "assigned_info": []
      }
    }
  },
  "SMP": {
    "child_roles": {
      "SMP#01": {
        "code": "SMPR#01",
        "assigned_info": [
        ]
      }
    }
  },
  "SMR": {
    "child_roles": {
      "SMR#01": {
        "code": "SMOR#01",
        "assigned_info": []
      },
      "SMOR#02": {
        "code": "SMOR#02",
        "assigned_info": []
      }
    }
  },
  "ANC": {
    "child_roles": {}
  }
}

我已经尝试过：我可以遍历该assigned_info 数组的所有元素并检查cur_assigned_to 是否为3050，但我无法复制剩余的键并且无法删除其他数组元素。

Answer 1

您可以复制整个parentObj并删除数组中的意外项目。

let objCopy = JSON.parse(JSON.stringify(parentObj))
for (let i in objCopy) {
    for (let j in objCopy[i]['child_roles']) {
        let obj = objCopy[i]['child_roles'][j]['assigned_info']
        for (let k in obj) {
            if ('cur_assigned_to' in obj[k] && obj[k].cur_assigned_to != '3050') {
                obj.splice(k, 1)
            }
        }
    }
}