node_add_copy-1.0.0-beta4/node_add_copy.module

<?php

/**
 * @file
 * Node Add Copy module.
 */

use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;
use Drupal\node\Entity\Node;


/**
 * Implements hook_help().
 */
function node_add_copy_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.node_add_copy':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Creates a form of the same node type with info preloaded with another node values') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_form_alter().
 */
function node_add_copy_form_alter(&$form, $form_state, $form_id) {
  if (\Drupal::routeMatch()->getRouteName() === 'node.add' && empty($form_state->getUserInput())) {
    $nid = \Drupal::request()->query->get('copy');
    if (!$nid) {
      return;
    }    
    $isWorkflowEdit = str_contains($form_id, $nid);
    $isEdit = str_contains($form_id, 'edit');
    if ($nid && !$isEdit && !$isWorkflowEdit) {
      // Load the edit form of the node to be copied.
      $node = Node::load($nid);
      $entity_form_builder = \Drupal::service('entity.form_builder');
      $editForm = $entity_form_builder->getForm($node, 'edit');
      foreach ($form as $key => $value) {
        if (strpos($key, 'field_') !== FALSE) {
          $field_type = $node->getFieldDefinition($key)?->getType();
          if ($field_type === 'entity_reference_revisions') {
            continue;
          }
          $form[$key] = $editForm[$key];
        }
      }

    }
  }
}

/**
 * Implements hook_entity_operation().
 */
function node_add_copy_entity_operation(EntityInterface $entity) {
  $operations = [];
  $node_content_type = $entity->bundle();
  $nid = $entity->id();
  $copyUrl = Url::fromUri('internal:/node/add/' . $node_content_type . '?copy=' . $nid);
  if ($entity->getEntityTypeId() === 'node' && \Drupal::currentUser()->hasPermission('allow to copy nodes')) {
    $operations['copy'] = [
      'title' => t('Copy'),
      'weight' => 100,
      'url' => $copyUrl,
    ];
  }
  return $operations;
}

/**
 * Implements hook_menu_local_tasks_alter().
 */
function node_add_copy_menu_local_tasks_alter(&$data, $route_name) {
  if ($route_name == 'entity.node.edit_form' || $route_name == 'entity.node.canonical') {
    $node = \Drupal::routeMatch()->getParameter('node');
    $nid = $node->id();
    if ($node && \Drupal::currentUser()->hasPermission('allow to copy nodes')) {
      $node_content_type = $node->bundle();
      $copy_link = Url::fromUri('internal:/node/add/' . $node_content_type . '?copy=' . $nid);
      $data['tabs'][0]['entity.node.copy'] = [
        '#theme' => 'menu_local_task',
        '#link' => [
          'title' => t('Copy'),
          'url' => $copy_link,
        ],
        '#weight' => 100,
      ];
    }
  }
}