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removeByDeviceToken

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javascript - 未调用 Mongoose query.remove() 回调

在这个问题上我已经在table上敲了大约2个小时,我似乎找不到解决方案。问题代码如下:/*Users*/varmongoose=require("mongoose");varUser=newmongoose.Schema({a:String,d:String});varremoveByDeviceToken=function(device_token,callback){this.findOne({d:device_token},function(error,user){if(error){callback(error);}elseif(user){user.remove(functi