Question

我有一个问题。我的数据是这样的：

{
  "name" : "username",
  "surname" : "surname",
  "playlists": {
    "name": "playlistName",
    "date": "27-09-14",
    "musics": [
      "music name 1",
      "music name 2"
    ]
  },
  "playlists": {
    "name": "playlistName2",
    "date": "27-09-14",
    "musics": [
      "music name 1",
      "music name 2"
    ]
  }

}

我想再添加一个＆＃34;播放列表＆＃34;该数据的部分。
我的数据应该是这样的：

{
  "name" : "username",
  "surname" : "surname",
  "playlists": {
    "name": "playlistName",
    "date": "27-09-14",
    "musics": [
      "music name 1",
      "music name 2"
    ]
  },
  "playlists": {
    "name": "playlistName2",
    "date": "27-09-14",
    "musics": [
      "music name 1",
      "music name 2"
    ]
  },
  "playlists" : {
    "blabla" : "blabla"
  }

}

更新查询无效。
我如何能？提前致谢。
我在尝试

$ dbData = array（＆＃39; $ set＆＃39; =＆gt;数组（＆＃39;播放列表＆＃39; =＆gt;数组（＆＃39; blabla＆＃39; =＆gt;   ＆＃39;布拉布拉＆＃39;）））;
      $ users-＆gt; update（array（＆＃39; _id＆＃39; =＆gt; new MongoId（＆＃39; 541f0e2216c8272c058b4567＆＃39;）），                 $ dbData）;

Answer 1

也可以有多个相同的密钥，但不建议这样做（你有2个playlists密钥，想要更多）。

一个合理的解决方案是将playlists作为数组并将元素推入其中。

{
  "name" : "username",
  "surname" : "surname",
  "playlists": [...]
}

$dbData = array('$push' => array('playlists' => array ('blabla' => 'blabla'))); 
$users->update(array('_id' => new MongoId ('541f0e2216c8272c058b4567')), $dbData);

如何在MongoDB上进行复杂的更新

1 个答案: