public function ExchangeRatesForm::form in Commerce Exchanger 8

Gets the actual form array to be built.

Overrides EntityForm::form

See also

\Drupal\Core\Entity\EntityForm::processForm()

\Drupal\Core\Entity\EntityForm::afterBuild()

File

src/Form/ExchangeRatesForm.php, line 95

Class

ExchangeRatesForm

Class ExchangeRateForm.

Namespace

Drupal\commerce_exchanger\Form

Code

public function form(array $form, FormStateInterface $form_state) {
  $form = parent::form($form, $form_state);
  $exchange_rates = $this->entity;
  $plugin_definition = $this->pluginManager
    ->getDefinitions();
  $plugins = array_column($plugin_definition, 'label', 'id');
  asort($plugins);

  // Use the first available plugin as the default value.
  if (!$exchange_rates
    ->getPluginId()) {
    $plugin_ids = array_keys($plugins);
    $plugin = reset($plugin_ids);
    $exchange_rates
      ->setPluginId($plugin);
  }

  // The form state will have a plugin value if #ajax was used.
  $plugin = $form_state
    ->getValue('plugin', $exchange_rates
    ->getPluginId());

  // Pass the plugin configuration only if the plugin
  // hasn't been changed via #ajax.
  $plugin_configuration = $exchange_rates
    ->getPluginId() === $plugin ? $exchange_rates
    ->getPluginConfiguration() : [];
  $wrapper_id = Html::getUniqueId('commerce-exchange-rate-form');
  $form['#prefix'] = '<div id="' . $wrapper_id . '">';
  $form['#suffix'] = '</div>';
  $form['#tree'] = TRUE;
  $form['label'] = [
    '#type' => 'textfield',
    '#title' => $this
      ->t('Label'),
    '#maxlength' => 255,
    '#default_value' => $exchange_rates
      ->label(),
    '#description' => $this
      ->t('Label for the Exchange rates.'),
    '#required' => TRUE,
  ];
  $form['id'] = [
    '#type' => 'machine_name',
    '#default_value' => $exchange_rates
      ->id(),
    '#machine_name' => [
      'exists' => '\\Drupal\\commerce_exchanger\\Entity\\ExchangeRates::load',
    ],
    '#disabled' => !$exchange_rates
      ->isNew(),
  ];
  $form['plugin'] = [
    '#type' => 'radios',
    '#title' => $this
      ->t('Plugin'),
    '#options' => $plugins,
    '#default_value' => $plugin,
    '#required' => TRUE,
    '#disabled' => !$exchange_rates
      ->isNew(),
    '#ajax' => [
      'callback' => '::ajaxRefresh',
      'wrapper' => $wrapper_id,
    ],
  ];
  $form['configuration'] = [
    '#type' => 'commerce_plugin_configuration',
    '#plugin_type' => 'commerce_exchanger_provider',
    '#plugin_id' => $plugin,
    '#default_value' => $plugin_configuration,
  ];
  $data = [];
  if ($existing = $exchange_rates
    ->getExchangerConfigName()) {
    $data = $this->configFactory
      ->get($existing)
      ->get('rates');
  }

  // Load currencies.
  $currencies = $this->currencyStorage
    ->loadMultiple();
  $form['exchange_rates'] = [
    '#type' => 'details',
    '#title' => $this
      ->t('Currency exchange rates'),
    '#open' => TRUE,
    '#tree' => TRUE,
  ];

  // See if plugin is manual. We dont need then flag for manual syncing.
  $manual_plugin = !empty($plugin_definition[$exchange_rates
    ->getPluginId()]['manual']);
  $demo_amount = $plugin_configuration['demo_amount'] ?? 100;
  foreach ($currencies as $key => $currency) {
    assert($currency instanceof CurrencyInterface);
    $form['exchange_rates'][$key] = [
      '#type' => 'details',
      '#title' => $currency
        ->label(),
      '#open' => FALSE,
    ];
    foreach ($currencies as $subkey => $subcurrency) {
      if ($key !== $subkey) {
        $default_rate = $data[$key][$subkey]['value'] ?? '0';
        $default_sync = $data[$key][$subkey]['sync'] ?? 0;

        // Specific change for manual plugin.
        if ($manual_plugin) {
          $default_sync = 1;
        }
        $form['exchange_rates'][$key][$subkey]['value'] = [
          '#type' => 'textfield',
          '#title' => $subkey,
          '#size' => 20,
          '#default_value' => $default_rate,
          '#disabled' => !$default_sync,
          '#field_suffix' => $this
            ->t('* @demo_amount @currency_symbol = @amount @conversion_currency_symbol', [
            '@demo_amount' => $demo_amount,
            '@currency_symbol' => $key,
            '@conversion_currency_symbol' => $subkey,
            '@amount' => $demo_amount * $default_rate,
          ]),
        ];

        // Based on cross sync value render form elements.
        if (isset($plugin_configuration['use_cross_sync']) && $plugin_configuration['use_cross_sync'] == 1) {
          $form['exchange_rates'][$key][$subkey]['value']['#description'] = $this
            ->t('Exchange rate derived from @initial using cross sync.', [
            '@initial' => $plugin_configuration['base_currency'],
          ]);
        }
        else {
          $form['exchange_rates'][$key][$subkey]['value']['#description'] = $this
            ->t('Exchange rate from @initial to @currency.', [
            '@initial' => $currency
              ->getCurrencyCode(),
            '@currency' => $subcurrency
              ->getCurrencyCode(),
          ]);
        }
        $form['exchange_rates'][$key][$subkey]['sync'] = [
          '#type' => 'checkbox',
          '#title' => $this
            ->t('Manually enter an exchange rate'),
          '#default_value' => $default_sync,
          '#access' => !$manual_plugin,
        ];
      }
    }
  }
  $form['status'] = [
    '#type' => 'radios',
    '#title' => $this
      ->t('Status'),
    '#options' => [
      0 => $this
        ->t('Disabled'),
      1 => $this
        ->t('Enabled'),
    ],
    '#default_value' => (int) $exchange_rates
      ->status(),
  ];
  return $form;
}