open called multiple times with connect-mongo about mongojs HOT 9 CLOSED

Hi @natiziv, I just make a db call before setting it. It wasn't much of a pain for me because I already have a db_init.js file that initialises the database with some inital data anyway (in case it is the first run), so it is already connected by the time that callback fires. A simple way of doing the same thing would be:

db.collection.count(function(){
  // continue with app initialisation
  app.use(session({
    store: new MongoStore({
      db: db.client
    })
  }));
  // start server etc...
});

I have the db.collection.count seperated into a different file, but it does essentially the same thing (and inserts data if the count is 0)

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db.client is actually still available - but only after the first db call (findOne fx) has succeeded.
Would an explicit db.open call help with your use-case?

// this doesnt work at the moment
db.open(function(err, client) {
   // add to MongoStore here
});

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That works, though it means wrapping the entirety of my server set up in a callback in order to wait for the dummy query to complete. Using open with a callback would work similarly, though I suppose it would be a bit more direct.

What I would prefer in this situation might be a db.openWait(); which blocks until finished. That goes against the general philosophy of Node, however, so I'm not sure what the most elegant solution would be at this point.

Perhaps I shouldn't be trying to share the same database for session store and user data in the first place, I've just been trying to follow the guidelines put forth by mongodb to minimize the number of connections. Since I already had a connection open for storing user data, it seemed to make sense to consolidate things.

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I know this is an old issue but this might be of interest: https://github.com/bugs181/databasejs

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mongojs should be directly compatible with connect-mongo as of 0.9.0 by simply passing the db instance directly

new MongoStore({
  db: mongojs(connectionString)
});

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Hi
I am gettting the following error when passing the mongjs instance directly to connect-mongo:

/node_modules/mongojs/node_modules/mongodb/lib/mongodb/mongo_client.js:411
throw err
^
RangeError: Maximum call stack size exceeded

I am using mongojs version 0.10.1 as follows:

//file mongodb.js
var mongojs = require('mongojs'),
    db = mongojs('url.to.mongo.db');
exports.db = db;

//files using collection
var db = require('../lib/mongodb').db,
    fooCollection = db.collection('foo');
fooCollection.find({});

//session
var db = require('../lib/mongodb').db;
var sessionStore = new MongoStore({
    db: db
});

Am i using it wrong?

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Just a small note to anyone seeing this, I was only able to get it to work using db.client:

var db = mongojs(connectionString);

app.use(session({
    store: new MongoStore({
      db: db.client
    })
  }));

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benkaiser - how were you able to get this working with db.client? it seems to be undefined until its connected to the db.

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I know this is old, but it still doesn't work.
The comment before closing doesn't work because of it needs to be a string:

db: mongojs('database', ['sessions'])

"Error: db option must be a string, array or a database instance."

I'm almost at the point of switching to mongoose

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