不使用lodash sortBy（）获得排序的数据

时间：2018-12-10 11:59:15

标签： node.js lodash

我有一些要按名称排序的对象数组。我正在使用lodash库并使用_.sortBy（）。但是通过使用此功能，我没有得到正确的响应。

以下是我的activeUser数组

[ { date: 'Tue Dec 11 2018 00:00:00 GMT+0530 (IST)',
    time: '10:30',
    user_name: 'Happy Teachers DAy',
    profilepic: 'http://192.168.0.109:8000//igXFkPIcNxSlhl0IB6c9iOexn.jpeg',
    activeType: 'Group',
    _id: '5b8f591bfd6e99021a2f1dd1',
    isCreatedByTherapist: false,
    groupMember: [] },
  { date: 'Tue Dec 11 2018 00:00:00 GMT+0530 (IST)',
    time: '16:00',
    user_name: 'Practice Group',
    profilepic: null,
    activeType: 'Group',
    _id: '5bc1dce4b9d0faf0271e0ef5',
    isCreatedByTherapist: false,
    groupMember: [] },
  { date: 'Tue Dec 18 2018 00:00:00 GMT+0530 (IST)',
    time: '16:00',
    user_name: 'Practice Group',
    profilepic: null,
    activeType: 'Group',
    _id: '5bc1dce4b9d0faf0271e0ef5',
    isCreatedByTherapist: false,
    groupMember: [] },
  { date: 'Sat Dec 15 2018 00:00:00 GMT+0530 (IST)',
    time: '12:00',
    user_name: 'Jayna',
    profilepic: 'http://192.168.0.110:8000/D5sd646Tlx3zuOvWqhesSjIoL.jpeg',
    activeType: 'Individual',
    _id: '5b289024e019bb7623761bae',
    isCreatedByTherapist: false,
    groupMember: [] },
  { date: 'Fri Dec 12 2018 05:30:00 GMT+0530 (IST)',
    time: '14:00',
    user_name: 'GCK',
    profilepic: 'http://192.168.0.110:8000/LDS3CpweCSSDDdOfa4lR6rPmn.jpeg',
    activeType: 'Individual',
    _id: '5ae1691241ce6c991f45b7fc',
    isCreatedByTherapist: false,
    groupMember: [] },
  { date: 'Fri Dec 11 2018 05:30:00 GMT+0530 (IST)',
    time: '16:00',
    user_name: 'kaushik',
    profilepic: 'http://192.168.0.110:8000/DNAtiR1iiG2jgJWsIH5tpZCwv.jpeg',
    activeType: 'Individual',
    _id: '5b502b2724f36ada24167083',
    isCreatedByTherapist: false,
    groupMember: [] } ]

sortedName = _.sortBy（activeUser，['user_name']）;

groupBy的代码如下：

var date = function (d) {
        if (d.fullname != null || d.fullname != undefined) {
          return d.fullname.toUpperCase().charAt(0);
        }
      }
      // map a group to the required form
      var groupToSummary = function (group, date) {
        return {
          date: date,
          data: group
        }
      }
      var data = _(sortedName)
        .groupBy(date)
        .map(groupToSummary)
        .value();

在sortedName中，我得到以下数组作为响应：

[
        {
            "date": "G",
            "data": [
                {
                    "date": "Fri Dec 12 2018 05:30:00 GMT+0530 (IST)",
                    "time": "14:00",
                    "user_name": "GCK",
                    "profilepic": "http://192.168.0.110:8000/LDS3CpweCSSDDdOfa4lR6rPmn.jpeg",
                    "activeType": "Individual",
                    "_id": "5ae1691241ce6c991f45b7fc",
                    "isCreatedByTherapist": false,
                    "groupMember": []
                }
            ]
        },
        {
            "date": "H",
            "data": [
                {
                    "date": "Mon Dec 10 2018 00:00:00 GMT+0530 (IST)",
                    "time": "18:00",
                    "user_name": "Happy Teachers DAy",
                    "profilepic": "http://192.168.0.110:8000//igXFkPIcNxSlhl0IB6c9iOexn.jpeg",
                    "activeType": "Group",
                    "_id": "5b8f591bfd6e99021a2f1dd1",
                    "isCreatedByTherapist": false,
                    "groupMember": [
                        {
                            "groupMemberId": "5b46f08262efab2027ecce7a",
                            "_id": "5b90a8385ef8155c17865afc",
                            "isMultiSession": false
                        },
                        {
                            "groupMemberId": "5b502b2724f36ada24167083",
                            "_id": "5b90a8385ef8155c17865afb",
                            "isMultiSession": false
                        },
                        {
                            "groupMemberId": "5ae1691241ce6c991f45b7fc",
                            "_id": "5b90a8385ef8155c17865af9",
                            "isMultiSession": false
                        }
                    ]
                },
                {
                    "date": "Tue Dec 11 2018 00:00:00 GMT+0530 (IST)",
                    "time": "10:30",
                    "user_name": "Happy Teachers DAy",
                    "profilepic": "http://192.168.0.110:8000//igXFkPIcNxSlhl0IB6c9iOexn.jpeg",
                    "activeType": "Group",
                    "_id": "5b8f591bfd6e99021a2f1dd1",
                    "isCreatedByTherapist": false,
                    "groupMember": [
                        {
                            "groupMemberId": "5b46f08262efab2027ecce7a",
                            "_id": "5b90a8385ef8155c17865afc",
                            "isMultiSession": false
                        },
                        {
                            "groupMemberId": "5b502b2724f36ada24167083",
                            "_id": "5b90a8385ef8155c17865afb",
                            "isMultiSession": false
                        },
                        {
                            "groupMemberId": "5ae1691241ce6c991f45b7fc",
                            "_id": "5b90a8385ef8155c17865af9",
                            "isMultiSession": false
                        }
                    ]
                }
            ]
        },
        {
            "date": "J",
            "data": [
                {
                    "date": "Sat Dec 15 2018 00:00:00 GMT+0530 (IST)",
                    "time": "12:00",
                    "user_name": "Jayna",
                    "profilepic": "http://192.168.0.110:8000/D5sd646Tlx3zuOvWqhesSjIoL.jpeg",
                    "activeType": "Individual",
                    "_id": "5b289024e019bb7623761bae",
                    "isCreatedByTherapist": false,
                    "groupMember": []
                },
                {
                    "date": "Sat Dec 10 2018 05:30:00 GMT+0530 (IST)",
                    "time": "11:00",
                    "user_name": "Jayna",
                    "profilepic": "http://192.168.0.110:8000/D5sd646Tlx3zuOvWqhesSjIoL.jpeg",
                    "activeType": "Individual",
                    "_id": "5b289024e019bb7623761bae",
                    "isCreatedByTherapist": false,
                    "groupMember": []
                }
            ]
        },
        {
            "date": "P",
            "data": [
                {
                    "date": "Tue Dec 11 2018 00:00:00 GMT+0530 (IST)",
                    "time": "16:00",
                    "user_name": "Practice Group",
                    "profilepic": null,
                    "activeType": "Group",
                    "_id": "5bc1dce4b9d0faf0271e0ef5",
                    "isCreatedByTherapist": false,
                    "groupMember": []
                }
            ]
        },
        {
            "date": "K",
            "data": [
                {
                    "date": "Fri Dec 11 2018 05:30:00 GMT+0530 (IST)",
                    "time": "16:00",
                    "user_name": "kaushik",
                    "profilepic": "http://192.168.0.110:8000/DNAtiR1iiG2jgJWsIH5tpZCwv.jpeg",
                    "activeType": "Individual",
                    "_id": "5b502b2724f36ada24167083",
                    "isCreatedByTherapist": false,
                    "groupMember": []
                }
            ]
        }
    ]

如您所见，最后两个对象不合适！

请帮帮我！！！任何人的帮助将不胜感激！！！

1 个答案:

答案 0 :(得分：0)

鉴于您显示的输入数据，我仍然无法获得所得到的结果，但是将大写的第一个字母称为“日期”似乎很奇怪，再加上您拥有引用full_name的代码，但事实并非如此该值在数据中的属性。

小写字母k使用_.sortBy排在所有大写字母之后，因此这可能是问题的一部分，以及为什么“ K”组排在最后，但是给出了代码，数据和您显示的输出不是“可能”，我不确定我还能提供什么帮助。

var  activeUser  =   [{
    date: 'Tue Dec 11 2018 00:00:00 GMT+0530 (IST)',
    time: '10:30',
    user_name: 'Happy Teachers DAy',
    profilepic: 'http://192.168.0.109:8000//igXFkPIcNxSlhl0IB6c9iOexn.jpeg',
    activeType: 'Group',
    _id: '5b8f591bfd6e99021a2f1dd1',
    isCreatedByTherapist: false,
    groupMember: []
  },
  {
    date: 'Tue Dec 11 2018 00:00:00 GMT+0530 (IST)',
    time: '16:00',
    user_name: 'Practice Group',
    profilepic: null,
    activeType: 'Group',
    _id: '5bc1dce4b9d0faf0271e0ef5',
    isCreatedByTherapist: false,
    groupMember: []
  },
  {
    date: 'Tue Dec 18 2018 00:00:00 GMT+0530 (IST)',
    time: '16:00',
    user_name: 'Practice Group',
    profilepic: null,
    activeType: 'Group',
    _id: '5bc1dce4b9d0faf0271e0ef5',
    isCreatedByTherapist: false,
    groupMember: []
  },
  {
    date: 'Sat Dec 15 2018 00:00:00 GMT+0530 (IST)',
    time: '12:00',
    user_name: 'Jayna',
    profilepic: 'http://192.168.0.110:8000/D5sd646Tlx3zuOvWqhesSjIoL.jpeg',
    activeType: 'Individual',
    _id: '5b289024e019bb7623761bae',
    isCreatedByTherapist: false,
    groupMember: []
  },
  {
    date: 'Fri Dec 12 2018 05:30:00 GMT+0530 (IST)',
    time: '14:00',
    user_name: 'GCK',
    profilepic: 'http://192.168.0.110:8000/LDS3CpweCSSDDdOfa4lR6rPmn.jpeg',
    activeType: 'Individual',
    _id: '5ae1691241ce6c991f45b7fc',
    isCreatedByTherapist: false,
    groupMember: []
  },
  {
    date: 'Fri Dec 11 2018 05:30:00 GMT+0530 (IST)',
    time: '16:00',
    user_name: 'kaushik',
    profilepic: 'http://192.168.0.110:8000/DNAtiR1iiG2jgJWsIH5tpZCwv.jpeg',
    activeType: 'Individual',
    _id: '5b502b2724f36ada24167083',
    isCreatedByTherapist: false,
    groupMember: []
  }
]; 
let sortedArray = _
  .chain(activeUser)
  .sortBy(['user_name'])
  .groupBy(function(d) {
    if (d.fullname != null || d.fullname != undefined) {
      return d.fullname.toUpperCase().charAt(0);
    } else {
      return d.user_name.toUpperCase().charAt(0);
    }
  })
  .map(function(group, date) {
    return ({
      date: date,
      data: group
    });
  })
  .value();

console.dir(sortedArray);
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.11/lodash.min.js"></script>

相关问题
最新问题