function update_requirements in Drupal 6

Same name and namespace in other branches

1. 8 core/modules/update/update.install \update_requirements()
2. 7 modules/update/update.install \update_requirements()
3. 9 core/modules/update/update.install \update_requirements()

Implementation of hook_requirements().

Return value

An array describing the status of the site regarding available updates. If there is no update data, only one record will be returned, indicating that the status of core can't be determined. If data is available, there will be two records: one for core, and another for all of contrib (assuming there are any contributed modules or themes enabled on the site). In addition to the fields expected by hook_requirements ('value', 'severity', and optionally 'description'), this array will contain a 'reason' attribute, which is an integer constant to indicate why the given status is being returned (UPDATE_NOT_SECURE, UPDATE_NOT_CURRENT, or UPDATE_UNKNOWN). This is used for generating the appropriate e-mail notification messages during update_cron(), and might be useful for other modules that invoke update_requirements() to find out if the site is up to date or not.

See also

_update_message_text()

_update_cron_notify()

2 calls to update_requirements()

update_help in modules/update/update.module

Implementation of hook_help().

_update_cron_notify in modules/update/update.fetch.inc

Perform any notifications that should be done once cron fetches new data.

File

modules/update/update.module, line 199

The "Update status" module checks for available updates of Drupal core and any installed contributed modules and themes. It warns site administrators if newer releases are available via the system status report (admin/reports/status), the…

Code

function update_requirements($phase) {
  if ($phase == 'runtime') {
    if ($available = update_get_available(FALSE)) {
      module_load_include('inc', 'update', 'update.compare');
      $data = update_calculate_project_data($available);

      // First, populate the requirements for core:
      $requirements['update_core'] = _update_requirement_check($data['drupal'], 'core');

      // We don't want to check drupal a second time.
      unset($data['drupal']);
      if (!empty($data)) {

        // Now, sort our $data array based on each project's status. The
        // status constants are numbered in the right order of precedence, so
        // we just need to make sure the projects are sorted in ascending
        // order of status, and we can look at the first project we find.
        uasort($data, '_update_project_status_sort');
        $first_project = reset($data);
        $requirements['update_contrib'] = _update_requirement_check($first_project, 'contrib');
      }
    }
    else {
      $requirements['update_core']['title'] = t('Drupal core update status');
      $requirements['update_core']['value'] = t('No update data available');
      $requirements['update_core']['severity'] = REQUIREMENT_WARNING;
      $requirements['update_core']['reason'] = UPDATE_UNKNOWN;
      $requirements['update_core']['description'] = _update_no_data();
    }
    return $requirements;
  }
}