Select 2 Stimulus Controller

action.rb

  def provinces
    data = Province
                .ransack(name_cont: params[:q], region_id_eq: params[:region_id])
                .result
                .limit(20)

    render json: data.map { |item| { id: item.id, text: item.name } }
  end

html.rb

      f.input :province,
        as: :select,
        input_html: {
          data: {
            controller: 'select2',
            url: provinces_select_address_index_path,
            'dependent-input-id': 'job_seeker_personal_information_region_id',
            'dependent-param-name': 'region_id'
          }
        },
        collection: f.object.province.present? ? [f.object.province] : []