fix "[object Object] does not exist" issue in node-mongo when using non ObjectId keys

fixed

//
var _open = function(self, options, callback) {
  var collection = self.collection();
  // Create the query
  var query = self.referenceBy == REFERENCE_BY_ID ? {_id:self.fileId} : {filename:self.filename};
  query = null == self.fileId && self.filename == null ? null : query;
  options.readPreference = self.readPreference;

  // Fetch the chunks
  if(query != null) {
    collection.find(query, options, function(err, cursor) {
      if(err) return error(err);

      // Fetch the file
      cursor.nextObject(function(err, doc) {
        if(err) return error(err);

        // Check if the collection for the files exists otherwise prepare the new one
        if(doc != null) {
          self.fileId = doc._id;
          // Prefer a new filename over the existing one if this is a write
          self.filename = ((self.mode == 'r') || (self.filename == undefined)) ? doc.filename : self.filename;
          self.contentType = doc.contentType;
          self.internalChunkSize = doc.chunkSize;
          self.uploadDate = doc.uploadDate;
          self.aliases = doc.aliases;
          self.length = doc.length;
          self.metadata = doc.metadata;
          self.internalMd5 = doc.md5;
        } else if (self.mode != 'r') {
          self.fileId = self.fileId == null ? new ObjectID() : self.fileId;
          self.contentType = exports.GridStore.DEFAULT_CONTENT_TYPE;
          self.internalChunkSize = self.internalChunkSize == null ? Chunk.DEFAULT_CHUNK_SIZE : self.internalChunkSize;
          self.length = 0;
        } else {
          self.length = 0;
          var txtId = self.fileId instanceof ObjectID ? self.fileId.toHexString() : JSON.stringify(self.fileId);
          return error(new Error((self.referenceBy == REFERENCE_BY_ID ? txtId : self.filename) + " does not exist", self));
        }

gistfile1.txt

Line 203 in mongodb@1.4.7

gridstore.js

var _open = function(self, options, callback) {
  var collection = self.collection();
  // Create the query
  var query = self.referenceBy == REFERENCE_BY_ID ? {_id:self.fileId} : {filename:self.filename};
  query = null == self.fileId && self.filename == null ? null : query;
  options.readPreference = self.readPreference;

  // Fetch the chunks
  if(query != null) {
    collection.find(query, options, function(err, cursor) {
      if(err) return error(err);

      // Fetch the file
      cursor.nextObject(function(err, doc) {
        if(err) return error(err);

        // Check if the collection for the files exists otherwise prepare the new one
        if(doc != null) {
          self.fileId = doc._id;
          // Prefer a new filename over the existing one if this is a write
          self.filename = ((self.mode == 'r') || (self.filename == undefined)) ? doc.filename : self.filename;
          self.contentType = doc.contentType;
          self.internalChunkSize = doc.chunkSize;
          self.uploadDate = doc.uploadDate;
          self.aliases = doc.aliases;
          self.length = doc.length;
          self.metadata = doc.metadata;
          self.internalMd5 = doc.md5;
        } else if (self.mode != 'r') {
          self.fileId = self.fileId == null ? new ObjectID() : self.fileId;
          self.contentType = exports.GridStore.DEFAULT_CONTENT_TYPE;
          self.internalChunkSize = self.internalChunkSize == null ? Chunk.DEFAULT_CHUNK_SIZE : self.internalChunkSize;
          self.length = 0;
        } else {
          self.length = 0;
          var txtId = self.fileId instanceof ObjectID ? self.fileId.toHexString() : self.fileId;
          return error(new Error((self.referenceBy == REFERENCE_BY_ID ? txtId : self.filename) + " does not exist", self));
        }