function ggroup_update_7004 in Group 7

Add the heritage column to {group_membership}.

File

modules/ggroup/ggroup.install, line 103

Install, update and uninstall functions for the Subgroup project.

Code

function ggroup_update_7004() {
  db_add_field('group_membership', 'heritage', _ggroup_heritage());

  // Load all 'inherited' memberships and set 'initial'.
  foreach (group_memberships(array(
    'status' => 'inherited',
  )) as $group_membership) {
    $group_membership->heritage = array(
      'initial' => $group_membership->roles,
      'granted' => array(),
      'revoked' => array(),
    );
    $group_membership
      ->save();
  }

  // Load all 'inherited-overridden' memberships and get funky.
  foreach (group_memberships(array(
    'status' => 'inherited-overridden',
  )) as $group_membership) {

    // Create an EMW to reduce the code below.
    $emw = entity_metadata_wrapper('group_membership', $group_membership);

    // Retrieve the membership's group type machine name.
    $type = $emw->group->group_type
      ->raw();

    // Retrieve the parent membership.
    $parent = $emw->parent_membership
      ->value();

    // Retrieve the parent membership's group type configuration array.
    $config = $emw->parent_membership->group->group_type
      ->value()->config;

    // If no configuration was found, something is wrong. Don't touch it.
    if (empty($config['subgroup'][$type])) {
      continue;
    }

    // Stores the roles the membership should have gotten.
    $inherited = array();

    // Check if the membership triggers any inherited roles.
    foreach ($config['subgroup'][$type] as $role => $inherits) {

      // If the member had the required role, grant the inherited roles.
      if ($role == 'member' || in_array($role, $parent->roles)) {
        $inherited += array_filter($inherits);
      }
    }

    // We don't need to set 'member' explicitly, so remove it.
    unset($inherited['member']);

    // Create a proper roles array.
    $inherited = array_keys($inherited);

    // Set the 'heritage' data correctly.
    $group_membership->heritage = array(
      'initial' => $inherited,
      'granted' => array_diff($group_membership->roles, $inherited),
      'revoked' => array_diff($inherited, $group_membership->roles),
    );
    $group_membership
      ->save();
  }
}