GridFS with pymongo cannot retrieve files

Question

I tried to test GridFS and I cannot get past this: I've put a file into a local gridfs.

$ mongofiles list connected to: 127.0.0.1 IMGP2224.JPG 1125745

in the code I have:

from pymongo import MongoClient import gridfs ... def index(): db = MongoClient('localhost', 27017).gridfs files = gridfs.GridFS(db) image = files.list() import pdb;pdb.set_trace() **pdb here gives empty []** return render_template("index.html", images=image)

What am I doing wrong?

Asya Kamsky · Accepted Answer · 2013-11-17 19:44:18Z

3

If you don't provide a database name when you use mongofiles it will use the default database (which is called test). If you don't specify a collection name, it will use fs.files and fs.chunks.

So in your Python code you need to use test as the database name, instead of gridfs and then it will find your default fs.files and fs.chunks collections.

answered Nov 17, 2013 at 19:44

Asya Kamsky

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2 Comments

bios Over a year ago

well still, I'm getting a list that's ok. in mongo shell in test db: db.fs.files.find() gives {"_id": ObjectId("5287b92d53aad8ef5062a08c", "filename" : "IMGP2224.JPG".......} but in python code: files.exists(filename="IMGP2224.JPG") True files.get("5287b92d53aad8ef5062a08c") NoFile: no file in gridfs collection

A. Jesse Jiryu Davis Over a year ago

Don't do: files.get("5287b92d53aad8ef5062a08c"). Do: files.get(ObjectId("5287b92d53aad8ef5062a08c")). ObjectIds and strings are different from each other.

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