instance method `pluck`

Ruby on Rails 7.2.3

Since v5.2.8.1

Available in: v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

pluck(*keys)

Extract the given key from each element in the enumerable.

[{ name: "David" }, { name: "Rafael" }, { name: "Aaron" }].pluck(:name)
# => ["David", "Rafael", "Aaron"]

[{ id: 1, name: "David" }, { id: 2, name: "Rafael" }].pluck(:id, :name)
# => [[1, "David"], [2, "Rafael"]]

Parameters

keys rest

Source

# File activesupport/lib/active_support/core_ext/enumerable.rb, line 145
  def pluck(*keys)
    if keys.many?
      map { |element| keys.map { |key| element[key] } }
    else
      key = keys.first
      map { |element| element[key] }
    end
  end

Defined in activesupport/lib/active_support/core_ext/enumerable.rb line 145 · View on GitHub · Improve this page · Find usages on GitHub

Defined in Enumerable

Signature

Parameters