我有一个来自google people api的承诺。在两个元素上工作得很好的映射和过滤器,但在第三个元素上给出了一个未定义的错误,在我看来是一样的。
在过去的两个小时里,我阅读了地图上的所有信息,并进行了有根据的猜测。这两种方法似乎都没有促进我的努力。
资源库、名称库和电子邮件库都有效。性别密码失败。

const arr = this.k4kItems.map(item => ({
  resource_LBL: item.person.resourceName,
  names_lbl: item.person.names.filter(
    name_PARM => name_PARM.metadata.source.type === "CONTACT"
  ),
  email_LBL: item.person.emailAddresses.filter(
    email_PARM => email_PARM.metadata.source.type === "CONTACT"
  ),
  gender_LBL: item.person.genders.filter(
    gender_PARM => gender_PARM.metadata.source.type === "CONTACT"
  )
}))

下面是json.stringify(promise)的相关元素或承诺。
"person": {
  "resourceName": "people\/c224283231105155344",
  "names": [
    {
      "metadata": {
        "primary": true,
        "source": {
          "type": "CONTACT",
          "id": "31cd0690f198110"
        }
      },
      "displayName": "Armena Kopf",
      "familyName": "Kopf",
      "givenName": "Armena",
      "displayNameLastFirst": "Kopf, Armena"
    },
    {
      "metadata": {
        "source": {
          "type": "PROFILE",
          "id": "112242108723070860293"
        }
      },
      "displayName": "Armena Dickson",
      "familyName": "Dickson",
      "givenName": "Armena",
      "displayNameLastFirst": "Dickson, Armena"
    }
  ],
  "genders": [
    {
      "metadata": {
        "primary": true,
        "source": {
          "type": "CONTACT",
          "id": "31cd0690f198110"
        }
      },
      "value": "female",
      "formattedValue": "Female"
    },
    {
      "metadata": {
        "source": {
          "type": "PROFILE",
          "id": "112242108723070860293"
        }
      },
      "value": "female",
      "formattedValue": "Female"
    }
  ],
  "emailAddresses": [
    {
      "metadata": {
        "primary": true,
        "source": {
          "type": "CONTACT",
          "id": "31cd0690f198110"
        }
      },
      "value": "armena_d@yahoo.com",
      "type": "home",
      "formattedType": "Home"
    }
  ]

预期的结果是性别将映射到数组,而不是给出未定义的错误。

最佳答案

只需添加存在不存在的深层属性的检查

gender_LBL: item.person.genders && item.person.genders.filter(
    gender_PARM => gender_PARM.metadata.source.type === "CONTACT"
)

10-05 20:44
查看更多