PUT method in Node.js/MongoDB -

i'm having issues simple put method in node.js (mongodb collection.update). appreciated. @ point, i'm not getting error, empty response.

index.js:

app.put('/updatevalues/:collection/:entity', function(req, res) {    var params = req.params;    var entity = params.entity;    var collection = params.collection;     var value1 = req.body.value1;    var value2 = req.body.value2;     if (entity) {        collectiondriver.updatevalues(collection, entity, value1, value2, function(error, objs) {           if (error) { res.status(400).send(error); }           else { res.status(200).send(objs); }        });    } else {       res.send(400, {error: 'bad url', url: req.url});    } }); 

collectiondriver.js:

collectiondriver.prototype.updatevalues = function(collectionname, namedoc, value1new, value2new, callback) {      this.getcollection(collectionname, function(error, the_collection) {         if (error) callback(error);         else {              the_collection.update(                { name: namedoc },                { $set: {                    value1: value1new,                    value2: value2new                 }},                 function( err, result ) {                         if ( err ) throw err;                     }                 );          }     }); }; 

testing with:

$ curl -i -x put -h 'content-type: application/json' -d '{"value1":"1","value2":"1"}' http://localhost/updatevalues/collection/test

reference callback passing in within function. presently not. seem expeting modified document in response, need .findoneandupdate() instead:

collectiondriver.prototype.updatevalues = function(collectionname, namedoc, value1new, value2new, callback) {    this.getcollection(collectionname, function(error, the_collection) {     if (error) callback(error);      the_collection.findoneandupdate(    // <-- new method       { name: namedoc },       { $set: {         value1: value1new,         value2: value2new       }},       { returnoriginal: false },        // <-- tells return modified document       callback                          // <--- passes callback passed in     );    }); });