function image_update_7002 in Drupal 7

Add width and height columns to image field schema and populate.

Related topics

File

modules/image/image.install, line 356

Install, update and uninstall functions for the image module.

Code

function image_update_7002(array &$sandbox) {
  if (empty($sandbox)) {

    // Setup the sandbox.
    $sandbox = array(
      'tables' => array(),
      'total' => 0,
      'processed' => 0,
      'last_fid' => NULL,
    );
    $fields = _update_7000_field_read_fields(array(
      'module' => 'image',
      'storage_type' => 'field_sql_storage',
      'deleted' => 0,
    ));
    foreach ($fields as $field) {
      $tables = array(
        _field_sql_storage_tablename($field),
        _field_sql_storage_revision_tablename($field),
      );
      foreach ($tables as $table) {

        // Add the width and height columns to the table.
        _image_update_7002_add_columns($table, $field['field_name']);

        // How many rows need dimensions populated?
        $count = db_select($table)
          ->countQuery()
          ->execute()
          ->fetchField();
        if (!$count) {
          continue;
        }
        $sandbox['total'] += $count;
        $sandbox['tables'][$table] = $field['field_name'];
      }
    }

    // If no tables need rows populated with dimensions then we are done.
    if (empty($sandbox['tables'])) {
      $sandbox = array();
      return;
    }
  }

  // Process the table at the top of the list.
  $keys = array_keys($sandbox['tables']);
  $table = reset($keys);
  $sandbox['processed'] += _image_update_7002_populate_dimensions($table, $sandbox['tables'][$table], $sandbox['last_fid']);

  // Has the table been fully processed?
  if (!$sandbox['last_fid']) {
    unset($sandbox['tables'][$table]);
  }
  $sandbox['#finished'] = count($sandbox['tables']) ? $sandbox['processed'] / $sandbox['total'] : 1;
}