CODEWITHSUNDEEP
rubymongodb
Kuralai
Kuralai

Reputation: 107

Removing fields with Ruby

Usually to remove some fields from collections in MongoDB, $unset is used. What can I do in Ruby to accomplish that? I have tried to read this, but I couldn't understand how to use it. I am new to Ruby and still learning to work with it.

Upvotes: 1

Views: 351

Answers (2)

Leopd
Leopd

Reputation: 42779

The $unset operator is used through the update command which is documented here for the ruby driver.

Taking a step back, the standard (10gen-maintained) MongoDB Ruby driver can do absolutely everything that mongodb can. It exposes very literally the full capabilities of mongodb, just like the mongodb drivers in other languages do. So don't worry about being able to do mongo things in any particular language.

You might be wondering about the capabilities of popular ODM layers since they vary. ODM layers map mongodb documents to native language objects. In Ruby, mongoid is the most popular ODM. As @Tilo points out, it also supports explicitly removing fields from documents through its higher-level API.

Upvotes: 2

Tilo
Tilo

Reputation: 33752

Please check this issue for Mongoid:

https://github.com/mongoid/mongoid/pull/635

p = Product.first
p.raw_attributes.delete :foo
p.save

Upvotes: 0

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