node_unpublished.module

<?php

/**
 * @file
 * Contains node_unpublished.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Session\AccountInterface;
use Drupal\node\NodeInterface;

/**
 * Implements hook_help().
 */
function node_unpublished_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the node_unpublished module.
    case 'help.page.node_unpublished':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Provides node alterations to allow access to view all unpublished and alter status.') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_node_access_records().
 */
function node_unpublished_node_access_records(NodeInterface $node) {
  // We only care about the node if is unpublished. If not, it is
  // treated just like any other node and we completely ignore it.
  if ($node->isPublished() === FALSE) {
    $grants = [];
    // Unpublished nodes should be viewable to all editors.
    $grants[] = array(
      'realm' => 'node_unpublished_view_unpublished',
      'gid' => 1,
      'grant_view' => 1,
      'grant_update' => 0,
      'grant_delete' => 0,
      'priority' => 0,
    );
    $grants[] = array(
      'realm' => 'view_unpublished_author',
      'gid' => $node->getOwnerId(),
      'grant_view' => 1,
      'grant_update' => 0,
      'grant_delete' => 0,
      'priority' => 0,
    );
    return $grants;
  }
}

/**
 * Implements hook_node_grants().
 */
function node_unpublished_node_grants(AccountInterface $account, $op) {
  $grants = [];
  if ($op == 'view') {
    if ($account->hasPermission('view own unpublished content')) {
      $grants['view_unpublished_author'][] = $account->id();
    }
    if ($account->hasPermission('override node publish options')) {
      $grants['node_unpublished_view_unpublished'][] = 1;
      return $grants;
    }
  }
  return $grants;
}


/**
 * Implements hook_entity_field_access_alter().
 */
function node_unpublished_entity_field_access_alter(array &$grants, array $context) {
  $entity_type = $context['field_definition']->getTargetEntityTypeId();

  if ($entity_type == 'node' && $context['operation'] == 'edit' && !$context['account']->hasPermission('administer nodes')) {

    switch ($context['field_definition']->getName()) {

      case 'status':
        $grants[':default'] = AccessResult::allowedIfHasPermission($context['account'], 'override node publish options');
        break;
    }
  }
}