Итерация через вложенный массив JSON

Question

Я хотел бы взять часть моего массива вложенных объектов и нажать на новый объект JSON Array.

Я хотел бы, чтобы каждый канал принимал опубликованныеTracks для нового json obj и объединил их все вместе в новый массив obj.

Мой JSON:

[ 
{ 
    "id": 1, 
    "user_id": 1, 
    "genre_id": null, 
    "genre_id_opt": null, 
    "name": "channela1", 
    "slug": "", 
    "description": null, 
    "is_verified": 0, 
    "cover": null, 
    "avatar": null, 
    "created_at": null, 
    "updated_at": null, 
    "publishedTracks": [ 
     { 
      "id": 1, 
      "album_id": 1, 
      "name": "track1", 
      "slug": "track1", 
      "track_no": null, 
      "track": null, 
      "duration": 0, 
      "avatar": "track_avatar1.jpg", 
      "genre_id": null, 
      "genre_id_opt": null, 
      "is_explicit": null, 
      "created_at": "2015-03-06T14:32:18.000Z", 
      "updated_at": "2015-03-06T14:32:18.000Z", 
      "album": { 
       "id": 1, 
       "channel_id": 1, 
       "genre_id": null, 
       "genre_id_opt": null, 
       "name": "alb1", 
       "slug": "alb1", 
       "description": "labore qui non et et ratione nobis", 
       "release_date": null, 
       "avatar": "alb_avatar1.jpg", 
       "type": null, 
       "is_publish": 1, 
       "created_at": "2015-03-06T14:32:18.000Z", 
       "updated_at": "2015-03-06T14:32:18.000Z" 
      }, 
      "_pivot_id": 1, 
      "_pivot_channel_id": 1 
     }, 
     { 
      "id": 27, 
      "album_id": 1, 
      "name": "track27", 
      "slug": "track27", 
      "track_no": null, 
      "track": null, 
      "duration": 0, 
      "avatar": "track_avatar27.jpg", 
      "genre_id": null, 
      "genre_id_opt": null, 
      "is_explicit": null, 
      "created_at": "2015-03-06T14:32:18.000Z", 
      "updated_at": "2015-03-06T14:32:18.000Z", 
      "album": { 
       "id": 1, 
       "channel_id": 1, 
       "genre_id": null, 
       "genre_id_opt": null, 
       "name": "alb1", 
       "slug": "alb1", 
       "description": "qui non et et ratione sint officia nobis", 
       "release_date": null, 
       "avatar": "alb_avatar1.jpg", 
       "type": null, 
       "is_publish": 1, 
       "created_at": "2015-03-06T14:32:18.000Z", 
       "updated_at": "2015-03-06T14:32:18.000Z" 
      }, 
      "_pivot_id": 1, 
      "_pivot_channel_id": 1 
     }, 
     { 
      "id": 2, 
      "album_id": 14, 
      "name": "track2", 
      "slug": "track2", 
      "track_no": null, 
      "track": null, 
      "duration": 0, 
      "avatar": "track_avatar2.jpg", 
      "genre_id": null, 
      "genre_id_opt": null, 
      "is_explicit": null, 
      "created_at": "2015-03-06T14:32:18.000Z", 
      "updated_at": "2015-03-06T14:32:18.000Z", 
      "album": { 
       "id": 14, 
       "channel_id": 1, 
       "genre_id": null, 
       "genre_id_opt": null, 
       "name": "alb14", 
       "slug": "alb14", 
       "description": "aliquam odio sapiente architecto", 
       "release_date": null, 
       "avatar": "alb_avatar14.jpg", 
       "type": null, 
       "is_publish": 1, 
       "created_at": "2015-03-06T14:32:18.000Z", 
       "updated_at": "2015-03-06T14:32:18.000Z" 
      }, 
      "_pivot_id": 14, 
      "_pivot_channel_id": 1 
     }, 
     { 
      "id": 28, 
      "album_id": 14, 
      "name": "track28", 
      "slug": "track28", 
      "track_no": null, 
      "track": null, 
      "duration": 0, 
      "avatar": "track_avatar28.jpg", 
      "genre_id": null, 
      "genre_id_opt": null, 
      "is_explicit": null, 
      "created_at": "2015-03-06T14:32:18.000Z", 
      "updated_at": "2015-03-06T14:32:18.000Z", 
      "album": { 
       "id": 14, 
       "channel_id": 1, 
       "genre_id": null, 
       "genre_id_opt": null, 
       "name": "alb14", 
       "slug": "alb14", 
       "description": "aliquam odio sapiente architecto", 
       "release_date": null, 
       "avatar": "alb_avatar14.jpg", 
       "type": null, 
       "is_publish": 1, 
       "created_at": "2015-03-06T14:32:18.000Z", 
       "updated_at": "2015-03-06T14:32:18.000Z" 
      }, 
      "_pivot_id": 14, 
      "_pivot_channel_id": 1 
     } 
    ] 
}, 
{ 
    "id": 2, 
    "user_id": 1, 
    "genre_id": null, 
    "genre_id_opt": null, 
    "name": "chann1", 
    "slug": "chann1", 
    "description": "adipisci non impedit tempora mollitia et est", 
    "is_verified": 0, 
    "cover": "chann_cover1.jpg", 
    "avatar": "chann_avatar1.jpg", 
    "created_at": "2015-03-06T14:32:18.000Z", 
    "updated_at": "2015-03-06T14:32:18.000Z", 
    "publishedTracks": [ 
     { 
      "id": 3, 
      "album_id": 2, 
      "name": "track3", 
      "slug": "track3", 
      "track_no": null, 
      "track": null, 
      "duration": 0, 
      "avatar": "track_avatar3.jpg", 
      "genre_id": null, 
      "genre_id_opt": null, 
      "is_explicit": null, 
      "created_at": "2015-03-06T14:32:18.000Z", 
      "updated_at": "2015-03-06T14:32:18.000Z", 
      "album": { 
       "id": 2, 
       "channel_id": 2, 
       "genre_id": null, 
       "genre_id_opt": null, 
       "name": "alb2", 
       "slug": "alb2", 
       "description": "aliquid neque autem est dignissimos", 
       "release_date": null, 
       "avatar": "alb_avatar2.jpg", 
       "type": null, 
       "is_publish": 1, 
       "created_at": "2015-03-06T14:32:18.000Z", 
       "updated_at": "2015-03-06T14:32:18.000Z" 
      }, 
      "_pivot_id": 2, 
      "_pivot_channel_id": 2 
     }, 
     { 
      "id": 29, 
      "album_id": 2, 
      "name": "track29", 
      "slug": "track29", 
      "track_no": null, 
      "track": null, 
      "duration": 0, 
      "avatar": "track_avatar29.jpg", 
      "genre_id": null, 
      "genre_id_opt": null, 
      "is_explicit": null, 
      "created_at": "2015-03-06T14:32:18.000Z", 
      "updated_at": "2015-03-06T14:32:18.000Z", 
      "album": { 
       "id": 2, 
       "channel_id": 2, 
       "genre_id": null, 
       "genre_id_opt": null, 
       "name": "alb2", 
       "slug": "alb2", 
       "description": "aliquid neque autem est dignissimos", 
       "release_date": null, 
       "avatar": "alb_avatar2.jpg", 
       "type": null, 
       "is_publish": 1, 
       "created_at": "2015-03-06T14:32:18.000Z", 
       "updated_at": "2015-03-06T14:32:18.000Z" 
      }, 
      "_pivot_id": 2, 
      "_pivot_channel_id": 2 
     } 
    ] 
}, 
{ 
    "id": 3, 
    "user_id": 6, 
    "genre_id": null, 
    "genre_id_opt": null, 
    "name": "chann2", 
    "slug": "chann2", 
    "description": "debitis repudiandae oluptatem quod", 
    "is_verified": 0, 
    "cover": "chann_cover2.jpg", 
    "avatar": "chann_avatar2.jpg", 
    "created_at": "2015-03-06T14:32:18.000Z", 
    "updated_at": "2015-03-06T14:32:18.000Z", 
    "publishedTracks": [] 
}, 
{ 
    "id": 4, 
    "user_id": 3, 
    "genre_id": null, 
    "genre_id_opt": null, 
    "name": "chann3", 
    "slug": "chann3", 
    "description": "rerum ut sequuntur dolores", 
    "is_verified": 0, 
    "cover": "chann_cover3.jpg", 
    "avatar": "chann_avatar3.jpg", 
    "created_at": "2015-03-06T14:32:18.000Z", 
    "updated_at": "2015-03-06T14:32:18.000Z", 
    "publishedTracks": [] 
} 

]

Answer 1

Вы ищете что-то вроде этого?

//channels is your array that you have put 
var obj = []; 
channels.forEach(function(channel) { 
    // it takes publishedTracks of the channel and pushes into a separate array.   
    obj.push(channel.publishedTracks); 

    //remove from channel object 
    delete channel.publishedTracks; 
}); 

console.log(obj); 

Answer 2

, возможно, вы могли бы попробовать

var newArray = JSONObject.map(function (elem) { 
    return elem.publishedTracks.reduce(function(prev, current) { 
     var result = prev; 
     result.push(current); 
     return result; 
    }, []); 
    });