javascript - 将公共(public)对象追加到一个数组中并删除重复项

Question

我正在尝试从 Javascript 数组中删除重复的对象。

我有一个这样的对象

var actualObj = [
  {
    "name": "Sam",
    "id": "1",
    "dept": "Inventory",
    "info": {
      "key1": "test1",
      "key2": "test2",
      "key3": "test3"
    }
  },
  {
    "name": "Paul",
    "id": "2",
    "dept": "Inventory",
    "info": {
      "key1": "test1",
      "key2": "test2",
      "key3": "test3"
    }
  },
  {
    "name": "Sam",
    "id": "1",
    "dept": "Inventory",
    "info": {
      "key4": "test4",
      "key5": "test5",
      "key6": "test6"
    }
  }
]

我试图删除重复项并将“信息”合并到对象数组中，如下所示

var expectedObj = [
  {
    "name": "Sam",
    "id": "1",
    "dept": "Inventory",
    "info": [
      {
        "key1": "test1",
        "key2": "test2",
        "key3": "test3"
      },
      {
        "key4": "test4",
        "key5": "test5",
        "key6": "test6"
      }
    ]
  },
  {
    "name": "Paul",
    "id": "2",
    "dept": "Inventory",
    "info": {
      "key1": "test1",
      "key2": "test2",
      "key3": "test3"
    }
  }
]

在“info”对象中具有相同的值，我尝试使用 Lodash，效果很好 JSFIDDLE

任何人都可以帮助我从实际对象实现预期对象。我正在尝试通过组合为具有相似 id 值的一个对象来创建预期的对象。

Answer 1

使用lodash，_.groupBy()按 id 列出的项目，然后 _.map()使用 _.omit() 将组转换为请求的格式获取没有信息的基础对象，_.map() 获取info 数组。使用 _.assign() 组合到单个对象:

var actualObj = [{"name":"Sam","id":"1","dept":"Inventory","info":{"key1":"test1","key2":"test2","key3":"test3"}},{"name":"Paul","id":"2","dept":"Inventory","info":{"key1":"test1","key2":"test2","key3":"test3"}},{"name":"Sam","id":"1","dept":"Inventory","info":{"key4":"test4","key5":"test5","key6":"test6"}}];

var result = _(actualObj)
  .groupBy('id')
  .map(function(group) {
    return _.assign(_.omit(group[0], 'info'), {
      info: _.map(group, 'info')
    });
  })
  .value();
  
console.log(result);
  
  

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