CODEWITHSUNDEEP
ruby-on-railsruby
AnApprentice
AnApprentice

Reputation: 110950

How to append items to an array

I have the following:

myObject = {
  id: user.id,
  email: user.email,
}

I need to add values like so:

if current_user && current_user.id == user.id
  myObject << {
    notification_email: user.notification_email,
    notification_email2: user.notification_email2
  }
end

The code above raises an error.

What's the right way to optionally append values to the object?

ERROR

undefined method `<<' for # Did you mean? <

Upvotes: 1

Views: 188

Answers (2)

sawa
sawa

Reputation: 168081

Perhaps you want Hash#merge.

myObject.merge(
  notification_email: user.notification_email,
  notification_email2: user.notification_email2
)

If you want side effects, use the banged version.

myObject.merge!(
  notification_email: user.notification_email,
  notification_email2: user.notification_email2
)

Upvotes: 7

Gerry
Gerry

Reputation: 10497

myObject is a hash, so to add new items you can do this:

if current_user && current_user.id == user.id
  myObject[:notification_email] = user.notification_email
  myObject[:notification_email2] = user.notification_email2
end

Upvotes: 4

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