Mongodb 在Mongo中嵌套$pull命令

我试图从多个数组中删除一个值，而不必发出多个Mongo命令。我必须有我的语法错误，任何帮助将不胜感激

当我尝试时：

update = BCON_NEW("$pull", 
        "{", 
            "files.$.like", BCON_UTF8 (account_id), 
        "}",
        "{", 
            "files.$.hate", BCON_UTF8 (account_id), 
        "}",
        "{", 
            "files.$.love", BCON_UTF8 (account_id), 
        "}",
        "{", 
            "files.$.funny", BCON_UTF8 (account_id), 
        "}",
        "{", 
            "files.$.sad", BCON_UTF8 (account_id), 
        "}",
        "{", 
            "files.$.anger", BCON_UTF8 (account_id), 
        "}",
        "{", 
            "files.$.kiss", BCON_UTF8 (account_id), 
        "}"
        );

如果我将其简化为以下内容，它将失败：

update = BCON_NEW("$pull", 
        "{", 
            "files.$.like", BCON_UTF8 (account_id), 
        "}"
        );

$pull对它后面的文档进行操作。看见我以前从未见过BCON符号，所以我可能是错的，但如果我理解正确，我相信您的代码创建的文档将如下所示：

{
    $pull: { "files.$.like": BCON_UTF8 (account_id) } //Here's the end of your $pull document,
    { "files.$.hate": BCON_UTF8 (account_id) },
    { "files.$.love": BCON_UTF8 (account_id) },
    ...
}, 

相反，我想你想要的是这样的东西我没有测试过：

update = BCON_NEW("$pull", 
    "{", 
        "files.$.like", BCON_UTF8 (account_id),  
        "files.$.hate", BCON_UTF8 (account_id), 
        "files.$.love", BCON_UTF8 (account_id), 
        "files.$.funny", BCON_UTF8 (account_id), 
        "files.$.sad", BCON_UTF8 (account_id), 
        "files.$.anger", BCON_UTF8 (account_id), 
        "files.$.kiss", BCON_UTF8 (account_id), 
    "}"
    );