method

pluck

v7.0.0 - Show latest stable - 0 notes - Class: Enumerable

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What's this?

pluck(*keys) public

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"]]

Show source

# File activesupport/lib/active_support/core_ext/enumerable.rb, line 179
  def pluck(*keys)
    if keys.many?
      map { |element| keys.map { |key| element[key] } }
    else
      key = keys.first
      map { |element| element[key] }
    end
  end

pluck

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