public Campaign CreateCampaign(string name, string description)
        {
            var newCampaign = new Campaign {Name = name, Description = description,};

            var currentUser = _securityService.CurrentUser();

            newCampaign.Members.Add(currentUser);

            currentUser.Community.Campaigns.Add(newCampaign);

            _unitOfWork.Save();

            return newCampaign;
        }
 public bool IsUserSubscribedTo(Campaign campaign)
 {
     return campaign.Members.Contains(_securityService.CurrentUser());
 }