MongoDB query $in with regex array of element

Question

Ok i am trying to implement a query, which is trying to perform regex search ( which contains an array list ) on a bunch of document

Its hard for me to explain...so

Answer 1

it does not work when the double quotes are present because they are interpreted as strings instead of as RegExp objects. So to make it to work, you have to convert it to RegExp objects first in Javascript like this.

var sea = [ "xd", "sd", "ad" ]; // Note: no slashes
var regex = [];
for (var i = 0; i < sea.length; i++) {
    regex[i] = new RegExp(sea[i]);
}
db.paper.find({"category": {$in: regex}});

Remember, MongoDB shell uses Javascript