search.js

var _ = require('lodash')
Query.prototype.search = function (search_query, options) {
    var query = this;
    var value = null;
    if (!_.isEmpty(search_query)) {
        request_query = search_query;
    } else {
        request_query = {};
    }

    delete request_query.maxId;
    delete request_query.sinceId;

    Object.keys(request_query).forEach(function (key) {
        if(request_query[key]==="true" || request_query[key]==="false"){
            value = request_query[key] == "true";
            query.where(key).equals(value);
        } else {
            if (Number(request_query[key]) && ( (!_.isEmpty(options) && !options[key]) || (!_.isEmpty(options) && options[key] == "number") )) {
                value = Number(request_query[key]);
                query.where(key).equals(value);
            } else if ( !_.isEmpty(options) && options[key] == "exact") {
                var qObj = {};
                qObj[key] = new RegExp("^" + request_query[key] + "$", "i");
                query.or([qObj]);
            } else {
                value = request_query[key];

                var arrayJson = {};
                var regexJson = {};

                arrayJson[key] = value instanceof Array ? { $in: value } : { $in: [value] };
                regexJson[key] = value instanceof Array ? { $in: _.map(value, function (v) { return new RegExp(v,"i"); } ) } : { $regex: new RegExp(value, "i") };

                if ( query._conditions.$or ) {
                    _or = query._conditions.$or;
                    delete query._conditions.$or;
                    query.or([{$or: _or}, {$or: [arrayJson, regexJson]}]);
                } else {
                    query.or([arrayJson, regexJson]);
                }

            }
        }
    });
};