sminnee / silverstripe-framework

        // Look in the cache for values

        $cacheKey = "{$type}-{$memberID}";

        if ($useCached && isset($this->cachePermissions[$cacheKey])) {

            $cachedValues = array_intersect_key($this->cachePermissions[$cacheKey], $result);

            // If we can't find everything in the cache, then look up the remainder separately

            $uncachedIDs = array_keys(array_diff_key($result, $this->cachePermissions[$cacheKey]));

            if ($uncachedIDs) {

                $uncachedValues = $this->batchPermissionCheck($type, $uncachedIDs, $member, $globalPermission, false);

                return $cachedValues + $uncachedValues;

            }

            return $cachedValues;

        }

        // If a member doesn't have a certain permission then they can't edit anything

        if ($globalPermission && !Permission::checkMember($member, $globalPermission)) {

        // Look in the cache for values

        $cacheKey = "delete-{$member->ID}";

        if ($useCached && isset($this->cachePermissions[$cacheKey])) {

            $cachedValues = array_intersect_key($this->cachePermissions[$cacheKey], $result);

            // If we can't find everything in the cache, then look up the remainder separately

            $uncachedIDs = array_keys(array_diff_key($result, $this->cachePermissions[$cacheKey]));

            if ($uncachedIDs) {

                $uncachedValues = $this->canDeleteMultiple($uncachedIDs, $member, false);

                return $cachedValues + $uncachedValues;

            }

            return $cachedValues;

        }

        // You can only delete pages that you can edit

        $editableIDs = array_keys(array_filter($this->canEditMultiple($ids, $member)));