instance method `find_one`

Ruby on Rails 8.0.4

Since v3.0.20 Private

Available in: v3.0.20 v3.1.12 v3.2.22.5 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:

find_one(id)

No documentation comment.

Parameters

id req

Source

# File activerecord/lib/active_record/relation/finder_methods.rb, line 521
      def find_one(id)
        if ActiveRecord::Base === id
          raise ArgumentError, <<-MSG.squish
            You are passing an instance of ActiveRecord::Base to `find`.
            Please pass the id of the object by calling `.id`.
          MSG
        end

        relation = if model.composite_primary_key?
          where(primary_key.zip(id).to_h)
        else
          where(primary_key => id)
        end

        record = relation.take

        raise_record_not_found_exception!(id, 0, 1) unless record

        record
      end

Defined in activerecord/lib/active_record/relation/finder_methods.rb line 521 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::FinderMethods

Signature

Parameters