public BlogController(
     IArticlesService articlesService,
     IBlogCategoriesService categoriesService,
     UserManager <ApplicationUser> userManager)
 {
     this.articlesService   = articlesService;
     this.categoriesService = categoriesService;
     this.userManager       = userManager;
 }
 public BlogArticlesController(
     IDeletableEntityRepository <BlogArticle> dataRepository,
     IArticlesService articlesService,
     IBlogCategoriesService categoriesService,
     IDeletableEntityRepository <BlogCategory> categoriesRepository,
     UserManager <ApplicationUser> userManager,
     IRepository <ApplicationUser> userRepository)
 {
     this.dataRepository       = dataRepository;
     this.articlesService      = articlesService;
     this.categoriesService    = categoriesService;
     this.userManager          = userManager;
     this.userRepository       = userRepository;
     this.categoriesRepository = categoriesRepository;
 }