function bizonoff_discount_category_edit_form($form, &$form_state) {

  // сохраним ключи родительских элементов
  $form['#tree'] = TRUE;


  //создадим кнопку для пересчета скидки
  $form['calculate_discounts'] = array(
    '#type' => 'button',
    '#value' => t('Пересчитать скидки'),
    '#ajax' => array(
      'callback' => '',
      'wrapper' => '',
      'method' => 'replace',
      'effect' => 'fade',
    ),
  );

  //создадим контейнеры для данных
  $form['active_discounts'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => 'Действующие скидки',
    '#prefix' => '<div id="active-discounts">',
    '#suffix' => '</div>',
    '#theme' => 'bizonoff_discount_category_active_discounts_table',
  );

  $form['disabled_discounts'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => 'Отключенные скидки',
    '#prefix' => '<div id="disabled-discounts">',
    '#suffix' => '</div>',
    '#theme' => 'bizonoff_discount_category_active_discounts_table',
  );

  //создадим шапки для наших таблиц
  $form['active_discounts']['header'] = array(
    '#type' => 'value',
    '#value' => array('ID', 'Приоритет', 'Размер, %', 'Начало действия', 'Конец действия', 'Управление товарами', 'Удаление'),
  );
  $form['disabled_discounts']['header'] = array(
    '#type' => 'value',
    '#value' => array('ID', 'Приоритет', 'Размер, %', 'Начало действия', 'Конец действия', 'Управление товарами', 'Удаление'),
  );

  //получим данные о скидках
  $discounts = db_select('bizonoff_categories_form', 'n')
      ->fields('n', array('id', 'priority', 'value', 'begin', 'end', 'product_id'))
      ->execute()
      ->fetchAll();

  //разделим скидки на активные и пассивные
  $active_discounts = array();
  $disabled_discounts = array();
  foreach ($discounts as $discount_key => $discount) {
    $current_time = time();
    if ($current_time > $discount->begin && $current_time < $discount->end) {
      $active_discounts[] = $discount;
    }
    else {
      $disabled_discounts[] = $discount;
    }
  }

  //сгенерируем поля для действующих скидок
  foreach ($active_discounts as $discount_key => $discount) {

    $form['active_discounts']['data']['id_' . $discount->id]['id'] = array(
      '#type' => 'item',
      '#markup' => $discount->id,
    );
    $form['active_discounts']['data']['id_' . $discount->id]['priority'] = array(
      '#type' => 'textfield',
      '#default_value' => $discount->priority,
      '#size' => 10,
      '#maxlength' => 10,
    );
    $form['active_discounts']['data']['id_' . $discount->id]['value'] = array(
      '#type' => 'textfield',
      '#default_value' => $discount->value,
      '#size' => 10,
      '#maxlength' => 10,
    );

    //получим текущую дату
    $date_start = array(
      'day' => format_date($discount->begin, 'custom', 'j'),
      'month' => format_date($discount->begin, 'custom', 'n'),
      'year' => format_date($discount->begin, 'custom', 'Y'),
    );
    $date_end = array(
      'day' => format_date($discount->end, 'custom', 'j'),
      'month' => format_date($discount->end, 'custom', 'n'),
      'year' => format_date($discount->end, 'custom', 'Y'),
    );

    $form['active_discounts']['data']['id_' . $discount->id]['start'] = array(
      '#type' => 'date',
      '#default_value' => $date_start,
    );

    $form['active_discounts']['data']['id_' . $discount->id]['end'] = array(
      '#type' => 'date',
      '#default_value' => $date_end,
    );

    $form['active_discounts']['data']['id_' . $discount->id]['change_products'] = array(
      '#type' => 'button',
      '#value' => t('Управление товарами'),
      '#ajax' => array(
        'callback' => '',
        'wrapper' => '',
        'method' => 'replace',
        'effect' => 'fade',
      ),
    );
    $form['active_discounts']['data']['id_' . $discount->id]['delete'] = array(
      '#type' => 'button',
      '#value' => t('Удалить'),
      '#ajax' => array(
        'callback' => '',
        'wrapper' => '',
        'method' => 'replace',
        'effect' => 'fade',
      ),
    );
  }

  //сгенерируем поля для не действующих скидок
  foreach ($disabled_discounts as $discount_key => $discount) {

    $form['disabled_discounts']['data']['id_' . $discount->id]['id'] = array(
      '#type' => 'item',
      '#markup' => $discount->id,
    );
    $form['disabled_discounts']['data']['id_' . $discount->id]['priority'] = array(
      '#type' => 'textfield',
      '#default_value' => $discount->priority,
      '#size' => 10,
      '#maxlength' => 10,
    );
    $form['disabled_discounts']['data']['id_' . $discount->id]['value'] = array(
      '#type' => 'textfield',
      '#default_value' => $discount->value,
      '#size' => 10,
      '#maxlength' => 10,
    );

    //получим текущую дату
    $date_start = array(
      'day' => format_date($discount->begin, 'custom', 'j'),
      'month' => format_date($discount->begin, 'custom', 'n'),
      'year' => format_date($discount->begin, 'custom', 'Y'),
    );
    $date_end = array(
      'day' => format_date($discount->end, 'custom', 'j'),
      'month' => format_date($discount->end, 'custom', 'n'),
      'year' => format_date($discount->end, 'custom', 'Y'),
    );

    $form['disabled_discounts']['data']['id_' . $discount->id]['start'] = array(
      '#type' => 'date',
      '#default_value' => $date_start,
    );

    $form['disabled_discounts']['data']['id_' . $discount->id]['end'] = array(
      '#type' => 'date',
      '#default_value' => $date_end,
    );

    $form['disabled_discounts']['data']['id_' . $discount->id]['change_products'] = array(
      '#type' => 'button',
      '#value' => t('Управление товарами'),
      '#ajax' => array(
        'callback' => '',
        'wrapper' => '',
        'method' => 'replace',
        'effect' => 'fade',
      ),
    );
    $form['disabled_discounts']['data']['id_' . $discount->id]['delete'] = array(
      '#type' => 'button',
      '#value' => t('Удалить'),
      '#ajax' => array(
        'callback' => '',
        'wrapper' => '',
        'method' => 'replace',
        'effect' => 'fade',
      ),
    );
  }

  return $form;
}

function bizonoff_discount_theme() {
  return array(
    'bizonoff_discount_category_active_discounts_table' => array(
      'render element' => 'form',
    ),
  );
}

function theme_bizonoff_discount_category_active_discounts_table($vars) {
  $form = $vars['form'];
  $rows = array();

  foreach (element_children($form['data']) as $key) {
    foreach (element_children($form['data'][$key]) as $name) {
      $rows[$key][] = drupal_render($form['data'][$key][$name]);
    }
  }

  return theme('table', array(
    'header' => $form['header']['#value'],
    'rows' => $rows,
  ));
  return;
}