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NodeJS + Mongo - how to get the contents of collection?

NodeJS + Mongo - how to get the contents of collection?

Problem

I'm writing a simple NodeJS app with Mongo. For connecting to mongo I use:

var mongo = require('mongodb'),
Server = mongo.Server,
Db = mongo.Db,
ObjectID = require('mongodb').ObjectID;
db.open(function(err,db) {...};

So, I have database "docs", and I've created a Collection called "companies". Now it has 4 objects (records) in it. I want to get the full contents of this collection as an array and show them line-by-line:

//get companies list
app.get('/companies',function(req,res){
db.collection("companies",function(err,collection){
    collection.find({},function(err, companies) {
        companies.forEach(function(err,company){
                console.log (company);
            }
        );
    });
});
});

However, Node returns me such error:

TypeError: Object # has no method 'forEach'

Any ideas? Thanks in advance.

Problem courtesy of: f1nn

Solution

The companies parameter that's passed into your find callback is a Cursor object, not an array. Call toArray on it to convert the query results to an array of objects, or each to process the results one at a time.

Solution courtesy of: JohnnyHK

Discussion

View additional discussion.



This post first appeared on Node.js Recipes, please read the originial post: here

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