method

build_through_record

v4.1.8 - Show latest stable - Class: ActiveRecord::Associations::HasManyThroughAssociation

build_through_record(record)

private

We temporarily cache through record that has been build, because if we build a through record in build_record and then subsequently call insert_record, then we want to use the exact same object.

However, after insert_record has been called, we clear the cache entry because we want it to be possible to have multiple instances of the same record in an association

# File activerecord/lib/active_record/associations/has_many_through_association.rb, line 82
        def build_through_record(record)
          @through_records[record.object_id] ||= begin
            ensure_mutable

            through_record = through_association.build(*options_for_through_record)
            through_record.send("#{source_reflection.name}=", record)
            through_record
          end
        end

build_through_record

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