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<?php
elgg_load_library('elgg:subgroups');
$group_guid = get_input('group');
$othergroup_guid = get_input('othergroup');
$othergroup_url = get_input('othergroup_url'); // maybe it isn't used
$group = get_entity($group_guid);
$othergroup = get_entity($othergroup_guid);
if(!$othergroup && $othergroup = subgroups_get_group_from_url($othergroup_url)){
$othergroup_guid = $othergroup->guid;
}
if ($group instanceof ElggGroup && $group->canEdit() && $othergroup instanceof ElggGroup) {
if ($othergroup->canEdit() && $group_guid != $othergroup_guid) {
// Check if other group isn't currently a supergroup
$tree_group = $group;
while ($tree_group->container_guid > 0 && $tree_group->guid != $othergroup_guid) {
$tree_group = get_entity($tree_group->container_guid);
}
// Only save if there isn't circles in the tree.
if ($tree_group->guid != $othergroup_guid) {
$othergroup->container_guid = $group_guid;
$othergroup->save();
forward(REFERER);
}
}
}
register_error(elgg_echo('subgroups:add:error'));
forward(REFERER);
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