portainer/app/portainer/views/groups/edit/groupController.js

angular.module('portainer.app')
.controller('GroupController', ['$q', '$scope', '$state', '$transition$', 'GroupService', 'TagService', 'Notifications',
function ($q, $scope, $state, $transition$, GroupService, TagService, Notifications) {

  $scope.state = {
    actionInProgress: false
  };

  $scope.update = function() {
    var model = $scope.group;

    $scope.state.actionInProgress = true;
    GroupService.updateGroup(model)
    .then(function success() {
      Notifications.success('Group successfully updated');
      $state.go('portainer.groups', {}, {reload: true});
    })
    .catch(function error(err) {
      Notifications.error('Failure', err, 'Unable to update group');
    })
    .finally(function final() {
      $scope.state.actionInProgress = false;
    });
  };

  function initView() {
    var groupId = $transition$.params().id;

    $q.all({
      group: GroupService.group(groupId),
      tags: TagService.tagNames()
    })
    .then(function success(data) {
      $scope.group = data.group;
      $scope.availableTags = data.tags;
      $scope.loaded = true;
    })
    .catch(function error(err) {
      Notifications.error('Failure', err, 'Unable to load group details');
    });
  }

  initView();
}]);