Select document by _id accessing database from MongoDB MLAB in Node.js - node.js

Question

I am trying to access the document from MongoDB which was hosted on MLab but getting following error while access document with _id. Following is code for your reference
var express = require('express');
var router = express.Router();
var mongojs = require('mongojs');
var db = mongojs('mongodb://<<UserName>>:<<Password>>#aadds157248.mlab.com:57248/<<DatabaseName>>',['temp1']);
router.get('/todo/:id',function(req,res,next){
var ObjectID = mongojs.ObjectID;
var o_id = new ObjectID (req.params.id);
db.temp1.findOne({
'_id': o_id
},
function(err,temp1){
if (err){
res.send(err);
}
else {
res.json(temp1);
}
})
});
But getting below error when try to access the URL : http://localhost:3000/api/v1/todo/5870f7f1f36d2872530d26f1
TypeError: hex is not a function
at Function.from (native)
at Function.from (native)
at new ObjectID (C:\Kamlesh\Angular2\meantodos\node_modules\bson\lib\bson\objectid.js:52:32)
at C:\Kamlesh\Angular2\meantodos\routes\todos.js:23:14
at Layer.handle [as handle_request] (C:\Kamlesh\Angular2\meantodos\node_modules\express\lib\router\layer.js:95:5)
at next (C:\Kamlesh\Angular2\meantodos\node_modules\express\lib\router\route.js:131:13)
at Route.dispatch (C:\Kamlesh\Angular2\meantodos\node_modules\express\lib\router\route.js:112:3)
at Layer.handle [as handle_request] (C:\Kamlesh\Angular2\meantodos\node_modules\express\lib\router\layer.js:95:5)
at C:\Kamlesh\Angular2\meantodos\node_modules\express\lib\router\index.js:277:22
at param (C:\Kamlesh\Angular2\meantodos\node_modules\express\lib\router\index.js:349:14)

Answer 1

I'm getting today a similar error related with some mongodb-core update.
I fixed it by forcing mongodb-core to the previous version i had:
npm install --save mongodb-core#1.3.18
Anyway, the first thing you have to check is that req.params.id has a valid hexadecimal 25 char string.