mongoskin

问题 I have a connection with mongoskin and nodejs: var db = mongo.db("root:toor@127.0.0.1:27017/cordoba"); but I don't know which is the best practice in this case... db.collection('usuarios').insert(campos,{safe:true}, function(err, result) I want to insert campos in mongodb, I'm using safe:true... so what happens if I use safe:false, and what is the best practice? this: var db = mongo.db("root:toor@127.0.0.1:27017/cordoba"); db.collection('usuarios').insert(campos,{safe:true}, function(err,

问题 Consider, I have MongoDB connection opened in the main app.js file itself and the following code fall in it's call back: mongodb.connect('MongoDBUrlGoesHere', function (err, db) { app.listen(app.get('port'), function AppListnCB() { console.log("Server listening on port " + app.get('port')); }); }); This is all done to have only one db instance across the application. Now, If we are in another external.js file and need a same db object which is aleady has connected. This can be done very

问题 This is an example of document that I have in my MongoDB: { "_id": ObjectId('5525039895884d66710d0fc3'), "prid": "63527", "data": { "sku": "HF22-81639", "name": "Product Test", "ean": "8763900872512", "description": "This product is my first test", } } This search for "description" does not work (this is where I need help): app.get("/description/:id", auth, function(req, res, next) { req.collection.findOne({ "data.description": req.params.id }, function(e, result) { if(e) return next(e); res

问题 This is an example of document that I have in my MongoDB: { "_id": ObjectId('5525039895884d66710d0fc3'), "prid": "63527", "data": { "sku": "HF22-81639", "name": "Product Test", "ean": "8763900872512", "description": "This product is my first test", } } This search for "description" does not work (this is where I need help): app.get("/description/:id", auth, function(req, res, next) { req.collection.findOne({ "data.description": req.params.id }, function(e, result) { if(e) return next(e); res

问题 I am using Mongoskin + NodeJS to add new keywords to my MongoDB. I want to notify the user that the entry was a duplicate but not sure how to do this. /* * POST to addkeyword. */ router.post('/addkeyword', function(req, res) { var db = req.db; db.collection('users').update({email:"useremail@gmail.com"}, {'$addToSet': req.body }, function(err, result) { if (err) throw err; if (!err) console.log('addToSet Keyword.' ); }); }); The result does not seem to be of any use to me since it doesn't tell

问题 I am using a wrapper called mongoskin to access mongoDB. mongoskin is a simple wrapper around mongoDB javascript api. But when I write to mongoDB, sometimes _id is converted to ObjectID, sometime is it not. The different behavior causes many problem when I have to compare _id. For example: The following documents in company collection, "creator" is not converted to ObjectID, but item in "clients" is converted to ObjectID automatically. > db.company.find() { "_id" : ObjectId(

问题 I'm trying to avoid using callbacks when making mongodb queries. I'm using mongoskin to make calls like so: req.db.collection('users').find().toArray(function (err, doc) { res.json(doc); }); In many cases I need to make multiple queries so I want to use Node.js promise library but I'm not sure how to wrap these functions as promises. Most of the examples I see are trivial for things like readFile , I'm guessing in this case I would need to wrap toArray somehow? Can this be done or would have

问题 I've read the various bits of literature, and I'm seeing the same problem that the questioner in https://stackoverflow.com/a/25636911 was seeing. My code looks like this: coll = db.collection('foobar'); bulk = coll.initializeUnorderedBulkOp(); for entry in messages { bulk.insert(entry); } bulk.execute(function (err, result) { if (err) throw err inserted += result.nInserted }); bulk is an object bulk.insert works just fine bulk.execute is undefined The answer in the stackoverflow question said

问题 I m actually developping a little application with mongodb and nodejs to create my REST Api. I face a problem when I need to access an object reference : I have a roadmap collection which reference a user object When I want to get all the roadmaps, I have to loop on my roadmap array to lazy load my users, by the ref ID stored in the roadmap collection I have a callback problem, the user is not loaded when I need it I have found a solution using Wait.for library : https://github.com/luciotato

问题 I already have an established database connection. I need to list the names of the collections in the database. Is it possible? 回答1: To show collections into database from mongo shell : db.getCollectionNames() So to show collection in mongoskin try that var collections = db.collections(); collections.each(function(err, collection) { console.log(collection); }); according to this link Mongoskin Tutorial 回答2: db.collectionNames(function(err, collectionArrayResult) { //Now do something with