使用Node.js驱动程序插入MongoDB

Question

I'm trying to find out why my ReST server won't insert more than one document to a collection.

The following works fine, but if I try to create a new, slightly different document, nothing happens.

Cruds.prototype.save = function(collectionName, obj, callback) {
    console.log('obj', obj);
    this.getCollection(collectionName, function(error, the_collection) {
        if( error ) callback(error)
        else {
            obj.created_at = new Date(); 
            the_collection.insert(obj, {safe: true}, function() {
                callback(null, obj);
            });
        }
    });
};

Above, simply checks for the collection and inserts the document. Works only once when I start the server and post to it. Subsequent posts don't save. Is the connection auto-closing? Any ideas?

Thanks!

Answer 1

Found the problem. After logging, I realized that the ObjectId was not being uniquely generated on insert (which I didn't really expect) and thus creating unique key conflicts. The solution is to pass the ObjectId along with the insert, like so:

Cruds.prototype.save = function(collectionName, obj, callback) {
    console.log('obj', obj);
    this.getCollection(collectionName, function(error, the_collection) {
        if( error ) callback(error)
        else {
            obj._id = ObjectID();
            obj.created_at = new Date();
            var document = merge(schema.user, obj);
            the_collection.insert(document, {safe: true}, function(err, result) { 
                callback(err, result);
            });
        }
    });
};