In my Rails 3 application, I've got current_account.users.
What I want is a list of the names of all the users i.e. user.full_name. What's the most elegant way to do it?
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1 Answer
If full_name is a column on the model, you can use the pluck method. That would look like current_account.users.pluck(:full_name). If not, you can use map or collect (same thing), which would look like current_account.users.map(&:full_name) or current_account.users.collect(&:full_name).
2 Comments
saneshark
technically pluck and (map or collect) are not the same thing, as pluck selects only the column in question: current_account.users.select(:full_name).map(&:full_name) would more precisely be the same thing as pluck. If the user table has large text or binary blobs for profile information and there are many rows, this becomes a notable distinction from a performance standpoint.
kddeisz
I meant that
collect and map are the same thing. The reason I mentioned pluck first was exactly because of that performance enhancement.