instance method `find_by`

Ruby on Rails 4.2.9

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

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find_by(*args)

Finds the first record matching the specified conditions. There is no implied ordering so if order matters, you should specify it yourself.

If no record is found, returns nil.

Post.find_by name: 'Spartacus', rating: 4
Post.find_by "published_at < ?", 2.weeks.ago

Parameters

args rest

Source

# File activerecord/lib/active_record/relation/finder_methods.rb, line 83
    def find_by(*args)
      where(*args).take
    rescue RangeError
      nil
    end

Defined in activerecord/lib/active_record/relation/finder_methods.rb line 83 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::FinderMethods

Signature

Parameters