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Databases Mongo Basics Working With Collections Querying Collections

Posted by George Akinian
George Akinian
17,615 Points

Not able to rename with db.rename()

Hi,
I'm having a bit hard time renaming the databse using db.rename() method. Perhaps someone can supply an appropriate way of doing so. Thanks

Robert Komaromi
Robert Komaromi
11,927 Points
Robert Komaromi
Robert Komaromi
11,927 Points

Take a look here: https://teamtreehouse.com/community/cant-run-dbrename-on-mongodb

Someone on the team should address this; I'm sure people will continue to post questions about it.

2 Answers

Ken Alger
STAFF
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Paul;

Thanks for pointing this out and hopefully the discussion in the post that Robert Komaromi mentioned answered your question. Please post back if you have additional questions on the matter.

I have contacted Treehouse support as well as the course instructor in the hopes that this particular quiz question will be corrected in a timely manner.

Happy coding,
Ken

Huston Hedinger
STAFF
Huston Hedinger
Treehouse Guest Teacher
Huston Hedinger
Huston Hedinger
Treehouse Guest Teacher

Hey guys - you are right - db.rename does not come packaged with the mongo shell. It does come with Mongo Hacker!

To tell you the truth, I did not realize that when I was creating the course and I apologize for the confusion.

In case you are interested, here is the mongo-hacker code that adds the rename method. 

DB.prototype.rename = function(newName) {
    if(newName == this.getName() || newName.length === 0)
        return;

    this.copyDatabase(this.getName(), newName, "localhost");
    this.dropDatabase();
    db = this.getSiblingDB(newName);
};

As Ken Alger pointed out, it uses the copyDatabase and dropDatabase.

Ken Alger
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Huston;

Thanks for the clarification on this and for correcting the quiz!

Happy coding,
Ken