/**
  * Show edit permissions page
  *
  * @param void
  * @return null
  */
 function edit_permissions()
 {
     $user = Users::findById(get_id());
     if (!$user instanceof User) {
         flash_error(lang('user dnx'));
         $this->redirectToReferer(get_url('dashboard'));
     }
     // if
     if (!$user->canUpdatePermissions(logged_user())) {
         flash_error(lang('no access permissions'));
         $this->redirectToReferer(get_url('dashboard'));
     }
     // if
     $company = $user->getCompany();
     if (!$company instanceof Company) {
         flash_error(lang('company dnx'));
         $this->redirectToReferer(get_url('dashboard'));
     }
     // if
     $projects = $company->getProjects();
     if (!is_array($projects) || !count($projects)) {
         flash_error(lang('no projects owned by company'));
         $this->redirectToReferer($company->getViewUrl());
     }
     // if
     $permissions = PermissionManager::getPermissionGroupsText();
     $redirect_to = array_var($_GET, 'redirect_to');
     if (trim($redirect_to) == '' || !is_valid_url($redirect_to)) {
         $redirect_to = $user->getCardUrl();
     }
     // if
     tpl_assign('user', $user);
     tpl_assign('contact', $user->getContact());
     tpl_assign('company', $company);
     tpl_assign('projects', $projects);
     tpl_assign('permissions', $permissions);
     tpl_assign('redirect_to', $redirect_to);
     if (array_var($_POST, 'submitted') == 'submitted') {
         DB::beginWork();
         ProjectUsers::clearByUser($user);
         foreach ($projects as $project) {
             $permission_count = 0;
             $permission_all = array_var($_POST, 'project_permissions_' . $project->getId() . '_all') == 'checked';
             foreach ($permissions as $permission_name => $permission_text) {
                 $permission_value = $permission_all || array_var($_POST, 'project_permission_' . $project->getId() . '_' . $permission_name) == 'checked';
                 if ($permission_value) {
                     $permission_count++;
                 }
                 $user->setProjectPermissionsByGroup($project, $permission_name, $permission_value);
             }
             // foreach
             if ($permission_count > 0) {
                 $relation = new ProjectUser();
                 $relation->setProjectId($project->getId());
                 $relation->setUserId($user->getId());
                 $relation->save();
             }
         }
         // if
         DB::commit();
         flash_success(lang('success user permissions updated'));
         $this->redirectToUrl($redirect_to);
     }
     // if
 }