instance method `ids`

Ruby on Rails 5.2.8.1

Since v4.0.13

Available in: v4.0.13 v4.1.16 v4.2.9 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:

ids()

Pluck all the ID’s for the relation using the table’s primary key

Person.ids # SELECT people.id FROM people
Person.joins(:companies).ids # SELECT people.id FROM people INNER JOIN companies ON companies.person_id = people.id

Source

# File activerecord/lib/active_record/relation/calculations.rb, line 206
    def ids
      pluck primary_key
    end

Defined in activerecord/lib/active_record/relation/calculations.rb line 206 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Calculations

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