derive_foreign_key

# File activerecord/lib/active_record/reflection.rb, line 839
        def derive_foreign_key(infer_from_inverse_of: true)
          if belongs_to?
            "#{name}_id"
          elsif options[:as]
            "#{options[:as]}_id"
          elsif options[:inverse_of] && infer_from_inverse_of
            inverse_of.foreign_key(infer_from_inverse_of: false)
          else
            active_record.model_name.to_s.foreign_key
          end
        end