php 将Gravity Form fileupload保存到ACF Gallery

Posted 2021-05-04

add_filter('gform_after_submission', 'll_gform_fileupload_to_acf_gallery', 10, 2);

function ll_gform_fileupload_to_acf_gallery($entry, $form) {

  foreach ($form['fields'] as $field) {

    if (!($field['type'] == 'post_custom_field' && $field['inputType'] == 'fileupload')) {
      continue;
    }

    $id           = $field['id'];
    $post_id      = $entry['post_id'];
    $acf_fields   = unserialize( $entry[$id] );
    $field_name   = $field['postCustomFieldName'];

    // get post
    if (isset($entry['post_id'])) {
      $post = get_post($entry['post_id']);
      if (is_null($post)) return;
    } else {
      return;
    }

    // Clean up images upload and create array for gallery field
    if (isset($entry[$id])) {
      // $images = unserialize( $entry[$id] );
      // $images = json_decode($images, true);
      $images = json_decode($entry[$id], true);

      if (!empty($images) && is_array($images)) {
        $gallery = array();
        foreach($images as $key => $value) {

          if (function_exists('ll_create_image_id')) $image_id = ll_create_image_id($value, $post->ID);
          if ($image_id) {
            $gallery[] = $image_id;
          }
        }
      }
    }

    // Update gallery field with array
    if (!empty($gallery)) {
      update_field($field_name, $gallery, $post->ID);

      // Updating post
      wp_update_post($post);
    }
  }
}

/**
 * Create the image attachment and return the new media upload id.
 *
 * @since 1.0.0
 * @see http://codex.wordpress.org/Function_Reference/wp_insert_attachment#Example
 */
function ll_create_image_id( $image_url, $parent_post_id = null ) {

  if( !isset( $image_url ) )
    return false;

  // Cache info on the wp uploads dir
  $wp_upload_dir = wp_upload_dir();

  // get the file path
  $path = parse_url( $image_url, PHP_URL_PATH );

  // File base name
  $file_base_name = basename( $image_url );

  // Full path
  if( site_url() != home_url() ) {
    $home_path = dirname( dirname( dirname( dirname( dirname( __FILE__ ) ) ) ) );
  } else {
    $home_path = dirname( dirname( dirname( dirname( __FILE__ ) ) ) );
  }

  $home_path = untrailingslashit( $home_path );
  $uploaded_file_path = $home_path . $path;

  // Check the type of file. We'll use this as the 'post_mime_type'.
  $filetype = wp_check_filetype( $file_base_name, null );

  // error check
  if( !empty( $filetype ) && is_array( $filetype ) ) {

    // Create attachment title
    $post_title = preg_replace( '/\.[^.]+$/', '', $file_base_name );

    // Prepare an array of post data for the attachment.
    $attachment = array(
      'guid'           => $wp_upload_dir['url'] . '/' . basename( $uploaded_file_path ),
      'post_mime_type' => $filetype['type'],
      'post_title'     => esc_attr( $post_title ),
      'post_content'   => '',
      'post_status'    => 'inherit'
    );

    // Set the post parent id if there is one
    if( !is_null( $parent_post_id ) ) {
      $attachment['post_parent'] = $parent_post_id;
    }

    // Insert the attachment.
    $attach_id = wp_insert_attachment( $attachment, $uploaded_file_path );

    //Error check
    if( !is_wp_error( $attach_id ) ) {

      //Generate wp attachment meta data
      if( file_exists( ABSPATH . 'wp-admin/includes/image.php') && file_exists( ABSPATH . 'wp-admin/includes/media.php') ) {
        require_once( ABSPATH . 'wp-admin/includes/image.php' );
        require_once( ABSPATH . 'wp-admin/includes/media.php' );
        $attach_data = wp_generate_attachment_metadata( $attach_id, $uploaded_file_path );
        wp_update_attachment_metadata( $attach_id, $attach_data );
      } // end if file exists check
    } // end if error check

    return $attach_id;

  } else {
    return false;
  } // end if $$filetype
} // end function get_image_id