function menu_block_update_5200 in Menu Block 6.2

Same name and namespace in other branches

1. 5.2 menu_block.install \menu_block_update_5200()
2. 7.3 menu_block.install \menu_block_update_5200()
3. 7.2 menu_block.install \menu_block_update_5200()

Converts enabled blocks list to ID list and deletes un-enabled blocks.

File

./menu_block.install, line 73

Provides install, upgrade and un-install functions for menu_block.

Code

function menu_block_update_5200() {
  $block_ids = array();
  foreach (variable_get('menu_block_enabled_blocks', array()) as $delta => $enabled) {
    if ($enabled) {
      $block_ids[] = $delta;

      // Build new $menu_block_ids.
      // Convert $menu_block_DELTA_mid to $menu_block_DELTA_menu_name.
      $mid = variable_get("menu_block_{$delta}_mid", 1);
      variable_set("menu_block_{$delta}_menu_name", $mid);

      // If we weren't upgraded to 5.x-2.x before the Drupal 6 upgrade, the
      // mid-to-menu_name conversion is not possible.
      variable_set("menu_block_{$delta}_title", $mid == 2 ? 'primary-links' : 'navigation');
      variable_del("menu_block_{$delta}_mid");
    }
    else {

      // Delete un-enabled menu block.
      variable_del("menu_block_{$delta}_mid");
      variable_del("menu_block_{$delta}_level");
      variable_del("menu_block_{$delta}_depth");
      variable_del("menu_block_{$delta}_expanded");
      db_query("DELETE FROM {blocks} WHERE module = 'menu_block' AND delta = %d", $delta);
    }
  }

  // Finish conversion of $menu_block_enabled_blocks to $menu_block_ids.
  sort($block_ids);
  variable_set('menu_block_ids', $block_ids);
  variable_del('menu_block_enabled_blocks');
  cache_clear_all();
  return array(
    0 => array(
      'success' => TRUE,
      'query' => t('A 5.x-1.x version of Menu block has been detected and an attempt was made to upgrade it. Unfortunately, you should have upgraded to Menu block 5.x-2.x before your upgrade to Drupal 6. You may need to re-configure all your menu blocks. To use menu blocks in Drupal 6, find the "Add menu block" tab (or button) on the <a href="@url">administer blocks page</a>.', array(
        '@url' => url('admin/build/block'),
      )),
    ),
  );
}