translation_views-8.x-1.x-dev/translation_views.module

<?php

/**
 * @file
 * Provide hooks for translation_views module.
 *
 * Basicaly this file is only used as workaround for these issues:
 * https://www.drupal.org/project/drupal/issues/2954032
 * https://www.drupal.org/project/drupal/issues/2944278
 */

use Drupal\Core\Database\Query\AlterableInterface;
use Drupal\Core\Entity\ContentEntityFormInterface;
use Drupal\Core\Entity\ContentEntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_module_implements_alter().
 */
function translation_views_module_implements_alter(&$implementations, $hook) {
  switch ($hook) {
    // Move our hook_form_alter() implementation to the end of the list.
    case 'form_alter':
      $group = $implementations['translation_views'];
      unset($implementations['translation_views']);
      $implementations['translation_views'] = $group;
      break;
  }
}

/**
 * Implements hook_form_alter().
 *
 * Add our submit for "source_langcode" submit.
 */
function translation_views_form_alter(&$form, FormStateInterface $form_state) {
  $form_object = $form_state->getFormObject();

  if (!($form_object instanceof ContentEntityFormInterface)) {
    return;
  }

  $entity = $form_object->getEntity();
  $operations = $form_object->getOperation();

  if ($entity instanceof ContentEntityInterface
    && $entity->isTranslatable()
    && count($entity->getTranslationLanguages()) > 1
    && in_array($operations, ['edit', 'add', 'default'], TRUE)
  ) {
    $form['source_langcode']['submit']['#submit'][] = 'translation_views_content_form_fix_destination';
  }
}

/**
 * Submit callback for "source_langcode" button.
 */
function translation_views_content_form_fix_destination($form, FormStateInterface $form_state) {
  /* @var \Drupal\Core\Entity\ContentEntityFormInterface $form_object */
  /* @var \Drupal\Core\Entity\ContentEntityInterface $entity */
  /* @var \Symfony\Component\HttpFoundation\ParameterBag $query */
  $form_object = $form_state->getFormObject();
  $entity      = $form_object->getEntity();
  $source      = $form_state->getValue(['source_langcode', 'source']);
  $query       = \Drupal::service('request_stack')->getCurrentRequest()->query;
  $options     = [];

  // Remove destination parameter from request,
  // to allow "Change" button works like desired.
  if ($query->has('destination')) {
    $options['query']['destination'] = $query->get('destination');
    $query->remove('destination');
  }

  $entity_type_id = $entity->getEntityTypeId();
  $form_state->setRedirect("entity.$entity_type_id.content_translation_add", [
    $entity_type_id => $entity->id(),
    'source' => $source,
    'target' => $form_object->getFormLangcode($form_state),
  ], $options);
}

/**
 * Implements hook_query_TAG_alter().
 *
 * Add support to use views query substitutions in expressions
 * from hook_views_query_substitutions().
 * Expressions can be used in views fields (i.e addField()),
 * and views orderBy formula (i.e addOrderBy()).
 *
 * @todo Remove this workaround when will be solved in drupal core.
 */
function translation_views_query_views_alter(AlterableInterface $query) {
  $substitutions = $query->getMetaData('views_substitutions');
  $expressions =& $query->getExpressions();

  foreach ($expressions as $field_id => &$item) {
    foreach ($item['arguments'] as $replacement_key => $value) {
      if (!is_array($value)) {
        if (isset($substitutions[$value])) {
          $expressions[$field_id]['arguments'][$replacement_key] = $substitutions[$value];
        }
      }
      else {
        foreach ($value as $sub_key => $sub_value) {
          if (isset($substitutions[$sub_value])) {
            $expressions[$field_id]['arguments'][$replacement_key][$sub_key] = $substitutions[$sub_value];
          }
        }
      }
    }
  }
}

/**
 * Implements hook_help().
 *
 * @inheritdoc
 */
function translation_views_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.translation_views':
      $text = file_get_contents(dirname(__FILE__) . '/README.md');
      if (!\Drupal::moduleHandler()->moduleExists('markdown')) {
        return '<pre>' . $text . '</pre>';
      }
      else {
        // Use the Markdown filter to render the README.
        $filter_manager = \Drupal::service('plugin.manager.filter');
        $settings = \Drupal::configFactory()->get('markdown.settings')->getRawData();
        $config = ['settings' => $settings];
        $filter = $filter_manager->createInstance('markdown', $config);
        return $filter->process($text, 'en');
      }
  }
  return NULL;
}