猫鼬中的“$ in”有什么问题

Good day for everyone. I have a strange error working with mongoose

每个人都过得愉快我和mongoose一起做了一个奇怪的错误

module.js:437
  var compiledWrapper = runInThisContext(wrapper, filename, tru
                        ^
SyntaxError: Unexpected token .
    at Module._compile (module.js:437:25)
    at Object.Module._extensions..js (module.js:467:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:362:17)
    at require (module.js:378:17)
    at Object.<anonymous> (E:\Dropbox\Dropbox\FCP\server.js
    at Module._compile (module.js:449:26)
    at Object.Module._extensions..js (module.js:467:10)
    at Module.load (module.js:356:32)

I gues it's goes from

我猜它是从的

dbQueries.remove({_id: {$in: {req.body.data}}, authorId: req.user._id}, function onRemoveSomething(err){
            if(err) {
                res.json({epicFail: 'ERR_RestrictedAccess'});
                return; 
            }
        });

So, I have no idea what is wrong.

所以,我不知道出了什么问题。

3 个解决方案

#1

$in takes an array, not an invalidly formatted javascript object

$ in采用数组,而不是格式无效的javascript对象

{_id: {$in: [req.body.data]}

or if req.body.data is already an array, omit the wrapping [ ]

或者如果req.body.data已经是一个数组,则省略wrap []

#2

you have to check req.body.data is an array or not, see the code below {_id: {$in: _.isArray(req.body.data) ? req.body.data : [req.body.data] } //const _ = require('lodash');

你必须检查req.body.data是不是数组,请参阅下面的代码{_id:{$ in:_.isArray(req.body.data)? req.body.data:[req.body.data]} // const _ = require('lodash');

#3

Build your query based on the data

根据数据构建查询

var match = {
    authorId: req.user._id
};

if(Array.isArray(data)) {
    match._id = {$in: data};
} else {
   match._id = data;
}

dbQueries.remove(match, function findMyDocs(err, foundDocs) {

});

#1