本文介绍了如何在猫鼬中执行查询?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
> db.users.findOne();
{
"_id" : ObjectId("4db8ebb4c693ec0363000001"),
"fb" : {
"name" : {
"last" : "Sss",
"first" : "Fss",
"full" : "Fss"
},
"updatedTime" : "2011-04-27T09:51:01+0000",
"verified" : true,
"locale" : "en_US",
"timezone" : "-7",
"email" : "[email protected]",
"gender" : "male",
"alias" : "abc",
"id" : "17447214"
}
}
那是我的Mongo对象.现在我想通过猫鼬找到它:
So that's my Mongo object. Now i want to find it via Mongoose:
User.findOne( { gender: "male" }, function(err, docs){
console.log(err); //returns Null
console.log(docs); //returns Null.
});
那行不通！也不这样做:
That doesn't work! Neither does this:
User.findOne( { fb: {gender:"male"} }, function...
null，null.
Null, null.
这是我的全部:
app.get('/:uid',function(req,res){
params = {}
User.findOne({ $where : "this.fb.gender == 'male' " }, function(err, docs){
console.log(docs);
});
res.render('user', { locals:params });
});
推荐答案
尝试一下:
User.findOne( { $where : "this.fb.gender == 'male' " } )
或
User.findOne( { fb.gender : "male" } )
这篇关于如何在猫鼬中执行查询?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！