how to create a new hash collection from a model collection

I have a collection of model objects that I need to convert into another collection but with many of the model's attributes removed.

Other than me looping through the existing collection and creating a new collection, is there a better way?

Say I have a user model like:

User id, name, password, country, city

And 开发者_开发知识库I want to create a new collection with the User model but with only the attributes: id, name, country

What's the best way to do this?

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The .select method will only fetch the specified fields for the object:

users = User.select([:id, :name, :country])

So users is an array of all User objects with only id, name and country populated. Is that what you need?