Merge branch 'first_branch' of https://git.is.ulstu.ru/Extrimal/PIbd-21_Kurs_Work_Hotel into first_branch

Hotel/HotelBusinessLogic/BusinessLogic/MealPlanLogic.cs

@@ -99,7 +99,7 @@ namespace HotelBusinessLogic.BusinessLogic
 			return true;
 		}
 
-		public bool AddMemberToMealPlan(MealPlanSearchModel model, IParticipantModel participant)
+		public bool AddParticipantToMealPlan(MealPlanSearchModel model, IParticipantModel participant)
 		{
 			if (model == null)
 			{

Hotel/HotelBusinessLogic/BusinessLogic/OrganiserLogic.cs

@@ -126,7 +126,7 @@ namespace HotelBusinessLogic.BusinessLogic
 
 			_logger.LogInformation("Organiser. OrganiserFIO: {OrganiserFIO}. OrganiserLogin: {OrganiserLogin}. Id: {Id}", model.OrganiserFIO, model.OrganiserLogin, model.Id);
 
-			var element = _organiserStorage.GetElement(new()
+			var element = _organiserStorage.GetElement(new OrganiserSearchModel
 			{
 				OrganiserEmail = model.OrganiserEmail,
 			});
@@ -135,6 +135,15 @@ namespace HotelBusinessLogic.BusinessLogic
 			{
 				throw new InvalidOperationException("Организатор с таким логином уже есть");
 			}
+
+			var elementLogin = _organiserStorage.GetElement(new OrganiserSearchModel
+			{
+				OrganiserLogin = model.OrganiserLogin
+			});
+			if (elementLogin != null && elementLogin.Id != model.Id)
+			{
+				throw new InvalidOperationException("Организатор с таким логином уже есть");
+			}
 		}
 	}
 }

Hotel/HotelBusinessLogic/BusinessLogic/ParticipantLogic.cs

@@ -25,7 +25,7 @@ namespace HotelBusinessLogic.BusinessLogic
 
 		public List<ParticipantViewModel>? ReadList(ParticipantSearchModel? model)
 		{
-			_logger.LogInformation("ReadList. FIO:{FIO}.Id:{Id}", model?.FIO, model?.Id);
+			_logger.LogInformation("ReadList. FIO:{FIO}.Id:{Id}", model?.ParticipantFIO, model?.Id);
 
 			var list = model == null ? _participantStorage.GetFullList() : _participantStorage.GetFilteredList(model);
 
@@ -47,7 +47,7 @@ namespace HotelBusinessLogic.BusinessLogic
 				throw new ArgumentNullException(nameof(model));
 			}
 
-			_logger.LogInformation("ReadElement.FIO:{FIO}.Id:{Id}", model.FIO, model.Id);
+			_logger.LogInformation("ReadElement.FIO:{FIO}.Id:{Id}", model.ParticipantFIO, model.Id);
 
 			var element = _participantStorage.GetElement(model);
 
@@ -110,12 +110,12 @@ namespace HotelBusinessLogic.BusinessLogic
 			if (!withParams)
 				return;
 
-			if (string.IsNullOrEmpty(model.FIO))
+			if (string.IsNullOrEmpty(model.ParticipantFIO))
-				throw new ArgumentNullException("Нет ФИО участника", nameof(model.FIO));
+				throw new ArgumentNullException("Нет ФИО участника", nameof(model.ParticipantFIO));
 			if (string.IsNullOrEmpty (model.Number))
 				throw new ArgumentNullException("Нет номера участника", nameof(model.Number));
 
-			_logger.LogInformation("Participant. FIO:{FIO}.Number:{Number}. Id:{Id}", model.FIO, model.Number, model.Id);
+			_logger.LogInformation("Participant. FIO:{FIO}.Number:{Number}. Id:{Id}", model.ParticipantFIO, model.Number, model.Id);
 		}
 	}
 }

Hotel/HotelContracts/BindingModels/ParticipantBindingModel.cs

@@ -11,7 +11,7 @@ namespace HotelContracts.BindingModels
 	{
 		public int Id { get; set; }
 
-		public string FIO { get; set; } = string.Empty;
+		public string ParticipantFIO { get; set; } = string.Empty;
 
 		public string Number { get; set; } = string.Empty;
 

Hotel/HotelContracts/BusinessLogicsContracts/IMealPlanLogic.cs

@@ -13,6 +13,6 @@ namespace HotelContracts.BusinessLogicsContracts
 		bool Create(MealPlanBindingModel model);
 		bool Update(MealPlanBindingModel model);
 		bool Delete(MealPlanBindingModel model);
-		bool AddMemberToMealPlan(MealPlanSearchModel model, IParticipantModel participant);
+		bool AddParticipantToMealPlan(MealPlanSearchModel model, IParticipantModel participant);
 	}
 }

Hotel/HotelContracts/SearchModels/ConferenceBookingSearchModel.cs

@@ -13,5 +13,7 @@ namespace HotelContracts.SearchModels
 		public int? ConferenceId { get; set; }
 		public string? PlaceСonference { get; set; }
 		public DateTime? DateСonference { get; set; }
+		public DateTime? DateFrom { get; set; }
+		public DateTime? DateTo { get; set; }
 	}
 }

Hotel/HotelContracts/SearchModels/OrganiserSearchModel.cs

@@ -8,14 +8,14 @@ namespace HotelContracts.SearchModels
 {
 	public class OrganiserSearchModel
 	{
-		public int Id { get; set; }
+		public int? Id { get; set; }
 
-		public string OrganiserLogin { get; set; } = string.Empty;
+		public string? OrganiserLogin { get; set; } = string.Empty;
 
-		public string OrganiserPassword { get; set; } = string.Empty;
+		public string? OrganiserPassword { get; set; } = string.Empty;
 
-		public string OrganiserEmail { get; set; } = string.Empty;
+		public string? OrganiserEmail { get; set; } = string.Empty;
 
-		public string OrganiserFIO { get; set; } = string.Empty;
+		public string? OrganiserFIO { get; set; } = string.Empty;
 	}
 }

Hotel/HotelContracts/SearchModels/ParticipantSearchModel.cs

@@ -10,7 +10,7 @@ namespace HotelContracts.SearchModels
 	{
 		public int? Id { get; set; }
 
-		public string? FIO { get; set; }
+		public string? ParticipantFIO { get; set; }
 
 		public int? OrganiserId { get; set; }
 	}

Hotel/HotelContracts/ViewModels/ParticipantViewModel.cs

@@ -13,7 +13,7 @@ namespace HotelContracts.ViewModels
 		public int Id { get; set; }
 
 		[DisplayName("ФИО участника")]
-		public string FIO { get; set; } = string.Empty;
+		public string ParticipantFIO { get; set; } = string.Empty;
 
 		[DisplayName("Номер участника")]
 		public string Number { get; set; } = string.Empty;

Hotel/HotelDataBaseImplement/HotelDataBase.cs

@@ -19,11 +19,16 @@ namespace HotelDataBaseImplement
 
 		public virtual DbSet<Conference> Conferences { get; set; }
 		public virtual DbSet<MealPlan> MealPlans { set; get; }
-		public virtual DbSet<Participant> Participant { set; get; }
+		public virtual DbSet<Participant> Participants { set; get; }
 		public virtual DbSet<Organiser> Organisers { set; get; }
 		public virtual DbSet<Administrator> Administrators { set; get; }
 		public virtual DbSet<ConferenceBooking> ConferenceBookings { set; get; }
 		public virtual DbSet<Room> Rooms { set; get; }
 		public virtual DbSet<Dinner> Dinners { set; get; }
+		public virtual DbSet<ConferenceBookingDinner> ConferenceBookingDinners { set; get; }
+		public virtual DbSet<ConferenceParticipant> ConferenceParticipants { set; get; }
+		public virtual DbSet<MealPlanParticipant> MealPlanParticipants { set; get; }
+		public virtual DbSet<MealPlanRoom> MealPlanRooms { set; get; }
+		public virtual DbSet<RoomDinner> RoomDinners { set; get; }
 	}
 }

Hotel/HotelDataBaseImplement/Implements/AdministratorStorage.cs

@@ -0,0 +1,126 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class AdministratorStorage : IAdministratorStorage
+	{
+		public List<AdministratorViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+
+			return context.Administrators.Select(x => x.GetViewModel).ToList();
+		}
+
+		public List<AdministratorViewModel> GetFilteredList(AdministratorSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.AdministratorFIO))
+			{
+				return null;
+			}
+
+			using var context = new HotelDataBase();
+
+			return context.Administrators
+				.Include(x => x.ConferenceBookings)
+				.Include(x => x.Dinners)
+				.Include(x => x.Rooms)
+				.Where(x => x.AdministratorLogin.Contains(model.AdministratorLogin) && x.AdministratorPassword == model.AdministratorPassword)
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public AdministratorViewModel? GetElement(AdministratorSearchModel model)
+		{
+			using var context = new HotelDataBase();
+
+			if(model.Id.HasValue)
+			{
+				return context.Administrators
+					.Include(x => x.ConferenceBookings)
+					.Include(x => x.Dinners)
+					.Include(x => x.Rooms)
+					.FirstOrDefault(x => x.Id == model.Id)?
+					.GetViewModel;
+			}
+
+			if(!string.IsNullOrEmpty(model.AdministratorEmail) && !string.IsNullOrEmpty(model.AdministratorPassword))
+			{
+				return context.Administrators
+					.Include(x => x.ConferenceBookings)
+					.Include(x => x.Dinners)
+					.Include(x => x.Rooms)
+					.FirstOrDefault(x => x.AdministratorEmail.Equals(model.AdministratorEmail) && x.AdministratorPassword.Equals(model.AdministratorPassword))?
+					.GetViewModel;
+			}
+
+			if (!string.IsNullOrEmpty(model.AdministratorEmail))
+			{
+				return context.Administrators
+					.Include(x => x.ConferenceBookings)
+					.Include(x => x.Dinners)
+					.Include(x => x.Rooms)
+					.FirstOrDefault(x => x.AdministratorEmail.Equals(model.AdministratorEmail))?
+					.GetViewModel;
+			}
+			return null;
+		}
+
+		public AdministratorViewModel? Insert(AdministratorBindingModel model)
+		{
+			var newAdministrator = Administrator.Create(model);
+
+
+			if (string.IsNullOrEmpty(model.AdministratorFIO))
+			{
+				return new();
+			}
+
+			using var context = new HotelDataBase();
+
+			context.Administrators.Add(newAdministrator);
+			context.SaveChanges();
+
+			return newAdministrator.GetViewModel;
+		}
+
+		public AdministratorViewModel? Update(AdministratorBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var administrator = context.Administrators
+				.FirstOrDefault(x => x.Id == model.Id);
+
+			if (administrator == null)
+			{
+				return null;
+			}
+
+			administrator.Update(model);
+			context.SaveChanges();
+
+			return administrator.GetViewModel;
+		}
+
+		public AdministratorViewModel? Delete(AdministratorBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.Administrators.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.Administrators.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+	}
+}

Hotel/HotelDataBaseImplement/Implements/ConferenceBookingStorage.cs

@@ -0,0 +1,167 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class ConferenceBookingStorage : IConferenceBookingStorage
+	{
+		public List<ConferenceBookingViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+
+			return context.ConferenceBookings
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.RoomDinners)
+				.ThenInclude(x => x.Room)
+				.Include(x => x.Conference)
+				.Include(x => x.Administrator)
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public List<ConferenceBookingViewModel> GetFilteredList(ConferenceBookingSearchModel model)
+		{
+			if (!model.DateFrom.HasValue && !model.DateTo.HasValue && !model.AdministratorId.HasValue)
+			{
+				return new();
+			}
+			using var context = new HotelDataBase();
+			if (model.DateFrom.HasValue)
+			{
+				return context.ConferenceBookings
+					   .Include(x => x.Dinners)
+					   .ThenInclude(x => x.Dinner)
+					   .ThenInclude(x => x.RoomDinners)
+					   .ThenInclude(x => x.Room)
+					   .Include(x => x.Conference)
+					   .Include(x => x.Administrator)
+						.Where(x => x.DateСonference >= model.DateFrom && x.DateСonference <= model.DateTo && x.AdministratorId == model.AdministratorId)
+						.Select(x => x.GetViewModel)
+						.ToList();
+			}
+			else if (model.AdministratorId.HasValue)
+			{
+				return context.ConferenceBookings
+					.Include(x => x.Dinners)
+					.ThenInclude(x => x.Dinner)
+					.ThenInclude(x => x.RoomDinners)
+					.ThenInclude(x => x.Room)
+					.Include(x => x.Conference)
+					.Include(x => x.Administrator)
+					.Where(x => x.AdministratorId == model.AdministratorId)
+					.ToList()
+					.Select(x => x.GetViewModel)
+					.ToList();
+			}
+			return context.ConferenceBookings
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.RoomDinners)
+				.ThenInclude(x => x.Room)
+				.Include(x => x.Conference)
+				.Include(x => x.Administrator)
+				.Where(x => x.PlaceСonference.Contains(model.PlaceСonference))
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public ConferenceBookingViewModel? GetElement(ConferenceBookingSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.PlaceСonference) && !model.Id.HasValue)
+			{
+				return null;
+			}
+
+			using var context = new HotelDataBase();
+
+			return context.ConferenceBookings
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.RoomDinners)
+				.ThenInclude(x => x.Room)
+				.Include(x => x.Conference)
+				.Include(x => x.Administrator)
+				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.PlaceСonference) && x.PlaceСonference == model.PlaceСonference) || (model.Id.HasValue && x.Id == model.Id))?
+			   .GetViewModel;
+		}
+
+		public ConferenceBookingViewModel? Insert(ConferenceBookingBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			var newConferenceBooking = ConferenceBooking.Create(context, model);
+
+			if (newConferenceBooking == null)
+			{
+				return null;
+			}
+
+			context.ConferenceBookings.Add(newConferenceBooking);
+			context.SaveChanges();
+
+			return context.ConferenceBookings
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.RoomDinners)
+				.ThenInclude(x => x.Room)
+				.Include(x => x.Conference)
+				.Include(x => x.Administrator)
+				.FirstOrDefault(x => x.Id == newConferenceBooking.Id)
+				?.GetViewModel;
+		}
+
+		public ConferenceBookingViewModel? Update(ConferenceBookingBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				var elem = context.ConferenceBookings
+					 .Include(x => x.Dinners)
+					 .ThenInclude(x => x.Dinner)
+					 .ThenInclude(x => x.ConferenceBookingDinner)
+					 .ThenInclude(x => x.ConferenceBooking)
+					 .ThenInclude(x => x.Conference)
+					 .FirstOrDefault(rec => rec.Id == model.Id); if (elem == null)
+				{
+					return null;
+				}
+				elem.Update(model);
+				context.SaveChanges();
+				if (model.ConferenceBookingDinners != null)
+					elem.UpdateDinners(context, model);
+				transaction.Commit();
+				return elem.GetViewModel;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+
+		public ConferenceBookingViewModel? Delete(ConferenceBookingBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.ConferenceBookings
+				.Include(x => x.Dinners)
+				.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.ConferenceBookings.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+	}
+}

Hotel/HotelDataBaseImplement/Implements/ConferenceStorage.cs

@@ -0,0 +1,155 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class ConferenceStorage : IConferenceStorage
+	{
+		public List<ConferenceViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+
+			return context.Conferences
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Bookings)
+				.Include(x => x.Organiser)
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public List<ConferenceViewModel> GetFilteredList(ConferenceSearchModel model)
+		{
+			if (!model.OrganiserId.HasValue)
+			{
+				return new();
+			}
+			using var context = new HotelDataBase();
+
+			if (model.OrganiserId.HasValue)
+				return context.Conferences
+					.Include(x => x.Participants)
+					.ThenInclude(x => x.Participant)
+					.ThenInclude(x => x.MealPlanParticipants)
+					.ThenInclude(x => x.MealPlan)
+					.Include(x => x.Bookings)
+					.Include(x => x.Organiser)
+					.Where(x => x.OrganiserId == model.OrganiserId)
+					.ToList()
+					.Select(x => x.GetViewModel)
+					.ToList();
+
+			return context.Conferences
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Bookings)
+				.Include(x => x.Organiser)
+				.Where(x => x.ConferenceName.Contains(model.ConferenceName))
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public ConferenceViewModel? GetElement(ConferenceSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ConferenceName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+
+			using var context = new HotelDataBase();
+
+			return context.Conferences
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Bookings)
+				.Include(x => x.Organiser)
+				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ConferenceName) && x.ConferenceName == model.ConferenceName) || (model.Id.HasValue && x.Id == model.Id))?
+				.GetViewModel;
+		}
+
+		public ConferenceViewModel? Insert(ConferenceBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			var newConference = Conference.Create(context, model);
+
+			if (newConference == null)
+			{
+				return null;
+			}
+
+			context.Conferences.Add(newConference);
+			context.SaveChanges();
+
+			return context.Conferences
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Bookings)
+				.Include(x => x.Organiser)
+				.FirstOrDefault(x => x.Id == newConference.Id)
+				?.GetViewModel;
+		}
+
+		public ConferenceViewModel? Update(ConferenceBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				var elem = context.Conferences.FirstOrDefault(rec => rec.Id == model.Id);
+				if (elem == null)
+				{
+					return null;
+				}
+				elem.Update(model);
+				context.SaveChanges();
+				if (model.ConferenceParticipants != null)
+					elem.UpdateMembers(context, model);
+				transaction.Commit();
+				return elem.GetViewModel;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+
+		public ConferenceViewModel? Delete(ConferenceBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.Conferences
+				.Include(x => x.Participants)
+				.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.Conferences.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+	}
+}

Hotel/HotelDataBaseImplement/Implements/DinnerStorage.cs

@@ -0,0 +1,133 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class DinnerStorage : IDinnerStorage
+	{
+		public List<DinnerViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+
+			return context.Dinners
+			.Include(x => x.RoomDinners)
+			.ThenInclude(x => x.Room)
+			.Include(x => x.ConferenceBookingDinner)
+			.ThenInclude(x => x.ConferenceBooking)
+			.Include(x => x.Administrator)
+			.Select(x => x.GetViewModel)
+			.ToList();
+		}
+
+		public List<DinnerViewModel> GetFilteredList(DinnerSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.DinnerName) && !model.AdministratorId.HasValue)
+			{
+				return new();
+			}
+
+			using var context = new HotelDataBase();
+
+			if (model.AdministratorId.HasValue)
+			{
+				return context.Dinners
+				.Include(x => x.RoomDinners)
+				.ThenInclude(x => x.Room)
+				.Include(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.Include(x => x.Administrator)
+					.Where(x => x.AdministratorId == model.AdministratorId)
+					.Select(x => x.GetViewModel)
+					.ToList();
+			}
+
+			return context.Dinners
+				.Include(x => x.RoomDinners)
+				.ThenInclude(x => x.Room)
+				.Include(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.Include(x => x.Administrator)
+				.Where(x => x.DinnerName.Contains(model.DinnerName))
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public DinnerViewModel? GetElement(DinnerSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.DinnerName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+
+			using var context = new HotelDataBase();
+
+			return context.Dinners
+				.Include(x => x.RoomDinners)
+				.ThenInclude(x => x.Room)
+				.Include(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.DinnerName) && x.DinnerName == model.DinnerName) || (model.Id.HasValue && x.Id == model.Id))?
+				.GetViewModel;
+		}
+
+		public DinnerViewModel? Insert(DinnerBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var newDinner = Dinner.Create(model);
+
+			if (newDinner == null)
+			{
+				return null;
+			}
+
+			context.Dinners.Add(newDinner);
+			context.SaveChanges();
+
+			return newDinner.GetViewModel;
+		}
+
+		public DinnerViewModel? Update(DinnerBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var dinner = context.Dinners.FirstOrDefault(x => x.Id == model.Id);
+
+			if (dinner == null)
+			{
+				return null;
+			}
+
+			dinner.Update(model);
+			context.SaveChanges();
+
+			return dinner.GetViewModel;
+		}
+
+		public DinnerViewModel? Delete(DinnerBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.Dinners.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.Dinners.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+	}
+}

Hotel/HotelDataBaseImplement/Implements/MealPlanStorage.cs

@@ -0,0 +1,159 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class MealPlanStorage : IMealPlanStorage
+	{
+		public List<MealPlanViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+			return context.MealPlans
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.Rooms)
+				.ThenInclude(x => x.Room)
+				.ThenInclude(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.Include(x => x.Organiser)
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public List<MealPlanViewModel> GetFilteredList(MealPlanSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.MealPlanName) && !model.OrganiserId.HasValue)
+			{
+				return new();
+			}
+
+			using var context = new HotelDataBase();
+
+			if (model.OrganiserId.HasValue)
+			{
+				return context.MealPlans
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.Rooms)
+				.ThenInclude(x => x.Room)
+				.ThenInclude(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.Include(x => x.Organiser)
+				.Where(x => x.OrganiserId == model.OrganiserId)
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+			}
+
+			return context.MealPlans
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.Rooms)
+				.ThenInclude(x => x.Room)
+				.ThenInclude(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.Include(x => x.Organiser)
+				.Where(x => x.MealPlanName.Contains(model.MealPlanName))
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public MealPlanViewModel? GetElement(MealPlanSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.MealPlanName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+
+			using var context = new HotelDataBase();
+
+			return context.MealPlans
+				.Include(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.ThenInclude(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.Rooms)
+				.ThenInclude(x => x.Room)
+				.ThenInclude(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.Include(x => x.Organiser)
+				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.MealPlanName) && x.MealPlanName == model.MealPlanName) || (model.Id.HasValue && x.Id == model.Id))?
+				.GetViewModel;
+		}
+
+		public MealPlanViewModel? Insert(MealPlanBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			var newMealPlan = MealPlan.Create(context, model);
+
+			if (newMealPlan == null)
+			{
+				return null;
+			}
+
+			context.MealPlans.Add(newMealPlan);
+			context.SaveChanges();
+			return newMealPlan.GetViewModel;
+		}
+
+		public MealPlanViewModel? Update(MealPlanBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				var elem = context.MealPlans.FirstOrDefault(rec => rec.Id == model.Id);
+				if (elem == null)
+				{
+					return null;
+				}
+				elem.Update(model);
+				context.SaveChanges();
+				if (model.MealPlanParticipants != null)
+					elem.UpdateMembers(context, model);
+				transaction.Commit();
+				return elem.GetViewModel;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+
+		public MealPlanViewModel? Delete(MealPlanBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.MealPlans
+				.Include(x => x.Participants)
+				.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.MealPlans.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+	}
+}

Hotel/HotelDataBaseImplement/Implements/OrganiserStorage.cs

@@ -0,0 +1,113 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class OrganiserStorage : IOrganiserStorage
+	{
+		public List<OrganiserViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+
+			return context.Organisers.Select(x => x.GetViewModel).ToList();
+		}
+
+		public List<OrganiserViewModel> GetFilteredList(OrganiserSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.OrganiserFIO))
+			{
+				return new();
+			}
+
+			using var context = new HotelDataBase();
+
+			return context.Organisers
+				.Include(x => x.MealPlans)
+				.Include(x => x.Participants)
+				.Include(x => x.Conferences)
+				.Where(x => x.OrganiserLogin.Contains(model.OrganiserLogin) && x.OrganiserPassword == model.OrganiserPassword)
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public OrganiserViewModel? GetElement(OrganiserSearchModel model)
+		{
+			using var context = new HotelDataBase();
+
+			if (model.Id.HasValue)
+			{
+				return context.Organisers
+					.Include(x => x.MealPlans)
+					.Include(x => x.Participants)
+					.Include(x => x.Conferences)
+					.FirstOrDefault(x => x.Id == model.Id)?
+					.GetViewModel;
+			}
+
+			if (!string.IsNullOrEmpty(model.OrganiserEmail) && !string.IsNullOrEmpty(model.OrganiserPassword))
+				return context.Organisers
+					.Include(x => x.MealPlans)
+					.Include(x => x.Participants)
+					.Include(x => x.Conferences)
+					.FirstOrDefault(x => x.OrganiserEmail.Equals(model.OrganiserEmail) && x.OrganiserPassword.Equals(model.OrganiserPassword))?
+					.GetViewModel;
+
+			if (!string.IsNullOrEmpty(model.OrganiserEmail))
+				return context.Organisers
+					.Include(x => x.MealPlans)
+					.Include(x => x.Participants)
+					.Include(x => x.Conferences)
+					.FirstOrDefault(x => x.OrganiserEmail.Equals(model.OrganiserEmail))?
+					.GetViewModel;
+
+			return null;
+		}
+
+		public OrganiserViewModel? Insert(OrganiserBindingModel model)
+		{
+			var newOrganiser = Organiser.Create(model);
+
+			if(newOrganiser == null) return null;
+
+			using var context = new HotelDataBase();
+
+			context.Organisers.Add(newOrganiser);
+			context.SaveChanges();
+
+			return newOrganiser.GetViewModel;
+		}
+
+		public OrganiserViewModel? Update(OrganiserBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var organiser = context.Organisers.FirstOrDefault(x => x.Id == model.Id);
+
+			if (organiser == null) return null;
+
+			organiser.Update(model);
+			context.SaveChanges();
+
+			return organiser.GetViewModel;
+		}
+
+		public OrganiserViewModel? Delete(OrganiserBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.Organisers.FirstOrDefault(x => x.Id == model.Id);
+
+            if (element != null)
+            {
+                context.Organisers.Remove(element);
+				context.SaveChanges();
+            }
+
+			return null;
+        }
+	}
+}

Hotel/HotelDataBaseImplement/Implements/ParticipantStorage.cs

@@ -0,0 +1,135 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.Metrics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class ParticipantStorage : IParticipantStorage
+	{
+		public List<ParticipantViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+
+			return context.Participants
+				.Include(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Organiser)
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public List<ParticipantViewModel> GetFilteredList(ParticipantSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ParticipantFIO) && !model.OrganiserId.HasValue)
+			{
+				return new();
+			}
+
+			using var context = new HotelDataBase();
+
+			if (model.OrganiserId.HasValue)
+			{
+				return context.Participants
+				.Include(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Organiser)
+				.Where(x => x.OrganiserId == model.OrganiserId)
+				.Select(x => x.GetViewModel)
+				.ToList();
+			}
+
+			return context.Participants
+				.Include(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Organiser)
+				.Where(x => x.ParticipantFIO.Contains(model.ParticipantFIO))
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public ParticipantViewModel? GetElement(ParticipantSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ParticipantFIO) && !model.Id.HasValue)
+			{
+				return null;
+			}
+
+			using var context = new HotelDataBase();
+
+			return context.Participants
+				.Include(x => x.ConferenceParticipants)
+				.ThenInclude(x => x.Conference)
+				.Include(x => x.MealPlanParticipants)
+				.ThenInclude(x => x.MealPlan)
+				.Include(x => x.Organiser)
+				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ParticipantFIO) && x.ParticipantFIO == model.ParticipantFIO) || (model.Id.HasValue && x.Id == model.Id))?
+				.GetViewModel;
+		}
+
+		public ParticipantViewModel? Insert(ParticipantBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var newParticipant = Participant.Create(model);
+
+			if (newParticipant == null)
+			{
+				return null;
+			}
+
+			context.Participants.Add(newParticipant);
+			context.SaveChanges();
+
+			return newParticipant.GetViewModel;
+		}
+
+		public ParticipantViewModel? Update(ParticipantBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+            var participant = context.Participants.FirstOrDefault(x => x.Id == model.Id);
+
+            if (participant == null)
+            {
+                return null;
+            }
+
+			participant.Update(model);
+            context.SaveChanges();
+
+            return participant.GetViewModel;
+		}
+
+		public ParticipantViewModel? Delete(ParticipantBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.Participants.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.Participants.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+	}
+}

Hotel/HotelDataBaseImplement/Implements/RoomStorage.cs

@@ -0,0 +1,184 @@
+using HotelContracts.BindingModels;
+using HotelContracts.SearchModels;
+using HotelContracts.StoragesContracts;
+using HotelContracts.ViewModels;
+using HotelDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.IdentityModel.Tokens;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataBaseImplement.Implements
+{
+	public class RoomStorage : IRoomStorage
+	{
+		public List<RoomViewModel> GetFullList()
+		{
+			using var context = new HotelDataBase();
+			return context.Rooms
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.Include(x => x.MealPlanRooms)
+				.ThenInclude(x => x.MealPlan)
+				.ThenInclude(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.Include(x => x.Administrator)
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public List<RoomViewModel> GetFilteredList(RoomSearchModel model)
+		{
+			if (!model.Id.HasValue && !model.AdministratorId.HasValue)
+			{
+				return new();
+			}
+
+			using var context = new HotelDataBase();
+
+			if (model.AdministratorId.HasValue)
+			{
+				return context.Rooms
+					.Include(x => x.Dinners)
+					.ThenInclude(x => x.Dinner)
+					.ThenInclude(x => x.ConferenceBookingDinner)
+					.ThenInclude(x => x.ConferenceBooking)
+					.Include(x => x.MealPlanRooms)
+					.ThenInclude(x => x.MealPlan)
+					.ThenInclude(x => x.Participants)
+					.ThenInclude(x => x.Participant)
+					.Include(x => x.Administrator)
+					.Where(x => x.AdministratorId == model.AdministratorId)
+					.ToList()
+					.Select(x => x.GetViewModel)
+					.ToList();
+			}
+
+			return context.Rooms
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.Include(x => x.MealPlanRooms)
+				.ThenInclude(x => x.MealPlan)
+				.ThenInclude(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.Include(x => x.Administrator)
+				.Where(x => x.RoomNumber == model.RoomNumber)
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public RoomViewModel? GetElement(RoomSearchModel model)
+		{
+			if (!model.Id.HasValue && model.RoomNumber != null)
+			{
+				return null;
+			}
+
+			using var context = new HotelDataBase();
+
+			var room = context.Rooms
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.Include(x => x.MealPlanRooms)
+				.ThenInclude(x => x.MealPlan)
+				.ThenInclude(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.Include(x => x.Administrator)
+				.FirstOrDefault(x => (model.RoomNumber != null && x.RoomNumber == model.RoomNumber) || (model.Id.HasValue && x.Id == model.Id));
+
+			return room?.GetViewModel;
+		}
+
+		public RoomViewModel? Insert(RoomBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			var newRoom = Room.Create(context, model);
+
+			if (newRoom == null)
+			{
+				return null;
+			}
+
+			context.Rooms.Add(newRoom);
+			context.SaveChanges();
+
+			return context.Rooms
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.Include(x => x.MealPlanRooms)
+				.ThenInclude(x => x.MealPlan)
+				.ThenInclude(x => x.Participants)
+				.ThenInclude(x => x.Participant)
+				.Include(x => x.Administrator)
+			   .FirstOrDefault(x => x.Id == newRoom.Id)
+			   ?.GetViewModel;
+		}
+
+		public RoomViewModel? Update(RoomBindingModel model)
+		{
+			using var context = new HotelDataBase();
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				var elem = context.Rooms
+					.Include(x => x.Dinners)
+					.ThenInclude(x => x.Dinner)
+					.ThenInclude(x => x.ConferenceBookingDinner)
+					.ThenInclude(x => x.ConferenceBooking)
+					.ThenInclude(x => x.Conference)
+					.FirstOrDefault(rec => rec.Id == model.Id);
+				if (elem == null)
+				{
+					return null;
+				}
+				elem.Update(model);
+				context.SaveChanges();
+				if (model.RoomDinners != null)
+					elem.UpdateDinners(context, model);
+				transaction.Commit();
+				return elem.GetViewModel;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+
+		public RoomViewModel? Delete(RoomBindingModel model)
+		{
+			using var context = new HotelDataBase();
+
+			var element = context.Rooms
+				.Include(x => x.Dinners)
+				.ThenInclude(x => x.Dinner)
+				.ThenInclude(x => x.ConferenceBookingDinner)
+				.ThenInclude(x => x.ConferenceBooking)
+				.ThenInclude(x => x.Conference)
+				.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.Rooms.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+	}
+}

Hotel/HotelDataBaseImplement/Models/Conference.cs

@@ -1,8 +1,11 @@
-using HotelDataModels.Models;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
 using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -21,14 +24,89 @@ namespace HotelDataBaseImplement.Models
 
 		public int OrganiserId { get; private set; }
 
-		private Dictionary<int, IParticipantModel> _conferenceMembers = null;
+		public virtual Organiser Organiser { get; set; }
 
+		private Dictionary<int, IParticipantModel> _conferenceParticipents = null;
+
+		[ForeignKey("ConferenceId")]
+		public virtual List<ConferenceBooking> Bookings { get; set; } = new();
+
+		[ForeignKey("ConferenceId")]
+		public virtual List<ConferenceParticipant> Participants { get; set; } = new();
+
+		[NotMapped]
 		public Dictionary<int, IParticipantModel> ConferenceParticipants
 		{
 			get
 			{
-				return _conferenceMembers;
+				if (_conferenceParticipents == null)
-			}
+				{
+					using var context = new HotelDataBase();
+					_conferenceParticipents = Participants.ToDictionary(x => x.ParticipantId, x => (context.Participants
+														.FirstOrDefault(y => y.Id == x.ParticipantId)! as IParticipantModel));
+				}
+				return _conferenceParticipents;
+			}
+		}
+
+		public static Conference Create(HotelDataBase context, ConferenceBindingModel model)
+		{
+			return new Conference()
+			{
+				Id = model.Id,
+				ConferenceName = model.ConferenceName,
+				Subject = model.Subject,
+				OrganiserId = model.OrganiserId,
+				Participants = model.ConferenceParticipants.Select(x => new ConferenceParticipant
+				{
+					Participant = context.Participants.First(y => y.Id == x.Key),
+				}).ToList()
+			};
+		}
+
+		public void Update(ConferenceBindingModel model)
+		{
+			ConferenceName = model.ConferenceName;
+			Subject = model.Subject;
+			OrganiserId = model.OrganiserId;
+		}
+
+		public ConferenceViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ConferenceName = ConferenceName,
+			Subject = Subject,
+			OrganiserId = OrganiserId,
+			ConferenceParticipants = ConferenceParticipants
+		};
+
+		public void UpdateMembers(HotelDataBase context, ConferenceBindingModel model)
+		{
+			var сonferenceParticipants = context.ConferenceParticipants.Where(rec => rec.ConferenceId == model.Id).ToList();
+
+			if (сonferenceParticipants != null && сonferenceParticipants.Count > 0)
+			{
+				context.ConferenceParticipants.RemoveRange(сonferenceParticipants.Where(rec => !model.ConferenceParticipants.ContainsKey(rec.ParticipantId)));
+				context.SaveChanges();
+
+				foreach (var updateParticipant in сonferenceParticipants)
+				{
+					model.ConferenceParticipants.Remove(updateParticipant.ParticipantId);
+				}
+				context.SaveChanges();
+			}
+
+			var conference = context.Conferences.First(x => x.Id == Id);
+			foreach (var cm in model.ConferenceParticipants)
+			{
+				context.ConferenceParticipants.Add(new ConferenceParticipant
+				{
+					Conference = conference,
+					Participant = context.Participants.First(x => x.Id == cm.Key),
+				});
+				context.SaveChanges(); 
+			}
+			_conferenceParticipents = null;
 		}
 	}
 }

Hotel/HotelDataBaseImplement/Models/ConferenceBooking.cs

@@ -70,5 +70,35 @@ namespace HotelDataBaseImplement.Models
 			DateСonference = DateСonference,
 			ConferenceBookingDinners = ConferenceBookingDinners
 		};
+
+		public void UpdateDinners(HotelDataBase context, ConferenceBookingBindingModel model)
+		{
+			var conferenceBookingDinners = context.ConferenceBookingDinners.Where(rec => rec.ConferenceBookingId == model.Id).ToList();
+
+			if (conferenceBookingDinners != null && conferenceBookingDinners.Count > 0)
+			{
+				context.ConferenceBookingDinners.RemoveRange(conferenceBookingDinners.Where(rec => !model.ConferenceBookingDinners.ContainsKey(rec.DinnerId)));
+				context.SaveChanges();
+
+				foreach (var updateDinner in conferenceBookingDinners)
+				{
+					model.ConferenceBookingDinners.Remove(updateDinner.DinnerId);
+				}
+				context.SaveChanges();
+			}
+
+			var conferenceBooking = context.ConferenceBookings.First(x => x.Id == Id);
+
+			foreach (var cm in model.ConferenceBookingDinners)
+			{
+				context.ConferenceBookingDinners.Add(new ConferenceBookingDinner
+				{
+					ConferenceBooking = conferenceBooking,
+					Dinner = context.Dinners.First(x => x.Id == cm.Key)
+				});
+				context.SaveChanges();
+			}
+			_conferenceBookingDinners = null;
+		}
 	}
 }

Hotel/HotelDataBaseImplement/Models/ConferenceParticipant.cs

@@ -1,6 +1,19 @@
-namespace HotelDataBaseImplement.Models
+using System.ComponentModel.DataAnnotations;
+using System.Diagnostics.Metrics;
+
+namespace HotelDataBaseImplement.Models
 {
 	public class ConferenceParticipant
 	{
+		public int Id { get; set; }
+
+		[Required]
+		public int ParticipantId { get; set; }
+
+		[Required]
+		public int ConferenceId { get; set; }
+
+		public virtual Conference Conference { get; set; } = new();
+		public virtual Participant Participant { get; set; } = new();
 	}
 }

Hotel/HotelDataBaseImplement/Models/Dinner.cs

@@ -25,7 +25,8 @@ namespace HotelDataBaseImplement.Models
 		[ForeignKey("DinnerId")]
 		public virtual List<RoomDinner> RoomDinners { get; set; } = new();
 		[ForeignKey("DinnerId")]
-		public virtual List<ConferenceBookingDinner> ConferenceBookingDinner { get; set; } = new();
+		public virtual List<ConferenceBookingDinner> ConferenceBookingDinner { get; set; }
+
 		public static Dinner? Create(DinnerBindingModel model)
 		{
 			if (model == null)

Hotel/HotelDataBaseImplement/Models/MealPlan.cs

@@ -1,8 +1,110 @@
-using HotelDataModels.Models;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+using Npgsql.PostgresTypes;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Globalization;
 
 namespace HotelDataBaseImplement.Models
 {
 	public class MealPlan : IMealPlanModel
 	{
+		public int Id { get; private set; }
+
+		[Required]
+		public string MealPlanName { get; set; } = string.Empty;
+
+		[Required]
+		public double MealPlanPrice { get; set; }
+
+		public int OrganiserId { get; private set; }
+
+		public virtual Organiser Organiser { get; set; }
+
+		private Dictionary<int, IParticipantModel> _mealPlanParticipants = null;
+
+		[ForeignKey("MealPlanId")]
+		public virtual List<MealPlanParticipant> Participants { get; set; } = new();
+
+		[ForeignKey("MealPlanId")]
+		public virtual List<MealPlanRoom> Rooms { get; set; } = new();
+
+		[NotMapped]
+		public Dictionary<int, IParticipantModel> MealPlanParticipants
+		{
+			get
+			{
+				if( _mealPlanParticipants == null )
+				{
+					using var contex = new HotelDataBase();
+					_mealPlanParticipants = Participants.ToDictionary(x => x.ParticipantId, x => (contex.Participants
+														.FirstOrDefault(y => y.Id == x.ParticipantId)! as IParticipantModel));
+				}
+				return _mealPlanParticipants;
+			}
+		}
+
+		public static MealPlan Create(HotelDataBase context, MealPlanBindingModel model)
+		{
+			return new MealPlan()
+			{
+				Id = model.Id,
+				MealPlanName = model.MealPlanName,
+				MealPlanPrice = model.MealPlanPrice,
+				OrganiserId = model.OrganiserId,
+				Participants = model.MealPlanParticipants.Select(x => new MealPlanParticipant
+				{
+					Participant = context.Participants.First(y => y.Id == x.Key),
+				}).ToList()
+			};
+		}
+
+		public void Update(MealPlanBindingModel model)
+		{
+			if (model == null) return;
+			MealPlanName = model.MealPlanName;
+			MealPlanPrice = model.MealPlanPrice;
+			OrganiserId = model.OrganiserId;
+		}
+
+		public MealPlanViewModel GetViewModel => new()
+		{
+			Id = Id,
+			MealPlanName = MealPlanName,
+			MealPlanPrice = MealPlanPrice,
+			OrganiserId = OrganiserId,
+		};
+
+		public void UpdateMembers(HotelDataBase context, MealPlanBindingModel model)
+		{
+			var mealPlanParticipants = context.MealPlanParticipants.Where(rec => rec.MealPlanId == model.Id).ToList();
+
+			if (mealPlanParticipants != null && mealPlanParticipants.Count > 0)
+			{
+				context.MealPlanParticipants.RemoveRange(mealPlanParticipants.Where(rec => !model.MealPlanParticipants.ContainsKey(rec.ParticipantId)));
+				context.SaveChanges();
+
+				foreach (var updateMember in mealPlanParticipants)
+				{
+					model.MealPlanParticipants.Remove(updateMember.ParticipantId);
+				}
+				context.SaveChanges();
+			}
+
+			var mealPlan = context.MealPlans.First(x => x.Id == Id);
+
+			foreach (var cm in model.MealPlanParticipants)
+			{
+				context.MealPlanParticipants.Add(new MealPlanParticipant
+				{
+					MealPlan = mealPlan,
+					Participant = context.Participants.First(x => x.Id == cm.Key)
+				});
+				context.SaveChanges();
+			}
+			_mealPlanParticipants = null;
+		}
 	}
 }

Hotel/HotelDataBaseImplement/Models/MealPlanParticipant.cs

@@ -1,6 +1,18 @@
-namespace HotelDataBaseImplement.Models
+using System.ComponentModel.DataAnnotations;
+
+namespace HotelDataBaseImplement.Models
 {
 	public class MealPlanParticipant
 	{
+		public int Id { get; set; }
+
+		[Required]
+		public int ParticipantId { get; set; }
+
+		[Required]
+		public int MealPlanId { get; set; }
+
+		public virtual MealPlan MealPlan { get; set; } = new();
+		public virtual Participant Participant { get; set; } = new();
 	}
 }

Hotel/HotelDataBaseImplement/Models/MealPlanRoom.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataBaseImplement.Models
+{
+	public class MealPlanRoom
+	{
+		public int Id { get; set; }
+
+		[Required]
+		public int RoomId { get; set; }
+
+		[Required]
+		public int MealPlanId { get; set; }
+
+		public virtual MealPlan MealPlan { get; set; } = new();
+		public virtual Room Room { get; set; } = new();
+	}
+}

Hotel/HotelDataBaseImplement/Models/Participant.cs

@@ -16,7 +16,7 @@ namespace HotelDataBaseImplement.Models
 		public int Id { get; private set; }
 
 		[Required]
-		public string FIO { get; set; } = string.Empty;
+		public string ParticipantFIO { get; set; } = string.Empty;
 
 		[Required]
 		public string Number { get; set; } = string.Empty;
@@ -29,7 +29,7 @@ namespace HotelDataBaseImplement.Models
 		public virtual List<MealPlanParticipant> MealPlanParticipants { get; set; } = new();
 
 		[ForeignKey("ParticipantId")]
-		public virtual List<ConferenceParticipant> ConferenceParticipant { get; set; } = new();
+		public virtual List<ConferenceParticipant> ConferenceParticipants { get; set; } = new();
 
 		public static Participant? Create(ParticipantBindingModel model)
 		{
@@ -37,7 +37,7 @@ namespace HotelDataBaseImplement.Models
 			return new Participant()
 			{
 				Id = model.Id,
-				FIO = model.FIO,
+				ParticipantFIO = model.ParticipantFIO,
 				Number = model.Number,
 				OrganiserId = model.OrganiserId,
 			};
@@ -48,10 +48,26 @@ namespace HotelDataBaseImplement.Models
 			return new Participant
 			{
 				Id = model.Id,
-				FIO = model.FIO,
+				ParticipantFIO = model.ParticipantFIO,
 				Number = model.Number,
 				OrganiserId = model.OrganiserId,
 			};
 		}
+
+		public void Update(ParticipantBindingModel model)
+		{
+			if (model == null) return;
+			ParticipantFIO = model.ParticipantFIO;
+			Number = model.Number;
+			OrganiserId = model.OrganiserId;
+		}
+
+		public ParticipantViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ParticipantFIO = ParticipantFIO,
+			Number = Number,
+			OrganiserId = OrganiserId,
+		};
 	}
 }

Hotel/HotelDataBaseImplement/Models/Room.cs

@@ -25,8 +25,12 @@ namespace HotelDataBaseImplement.Models
 		public int? MealPlanId { get; private set; }
 		public virtual Administrator Administrator { get; set; }
 		public virtual MealPlan? MealPlan { get; set; }
+
 		[ForeignKey("RoomId")]
-		public virtual List<RoomDinner> Dinners { get; set; }
+		public virtual List<RoomDinner> Dinners { get; set; } = new();
+
+		[ForeignKey("RoomId")]
+		public virtual List<MealPlanRoom> MealPlanRooms { get; set; }
 
 		private Dictionary<int, IDinnerModel> _roomDinners = null;
 		[NotMapped]
@@ -81,5 +85,34 @@ namespace HotelDataBaseImplement.Models
 			RoomDinners = RoomDinners
 		};
 
+		public void UpdateDinners(HotelDataBase context, RoomBindingModel model)
+		{
+			var roomDinners = context.RoomDinners.Where(rec => rec.RoomId == model.Id).ToList();
+
+			if (roomDinners != null && roomDinners.Count > 0)
+			{
+				context.RoomDinners.RemoveRange(roomDinners.Where(rec => !model.RoomDinners.ContainsKey(rec.DinnerId)));
+				context.SaveChanges();
+
+				foreach (var updateDinner in roomDinners)
+				{
+					model.RoomDinners.Remove(updateDinner.DinnerId);
+				}
+				context.SaveChanges();
+			}
+
+			var room = context.Rooms.First(x => x.Id == Id);
+
+			foreach (var cm in model.RoomDinners)
+			{
+				context.RoomDinners.Add(new RoomDinner
+				{
+					Room = room,
+					Dinner = context.Dinners.First(x => x.Id == cm.Key),
+				});
+				context.SaveChanges();
+			}
+			_roomDinners = null;
+		}
 	}
 }

Hotel/HotelDataModels/Models/IParticipantModel.cs

@@ -2,7 +2,7 @@
 {
 	public interface IParticipantModel : IId
 	{
-		string FIO { get; }
+		string ParticipantFIO { get; }
 		string Number { get; }
 		int OrganiserId { get; }
 	}

Hotel/HotelRestApi/Program.cs

@@ -1,7 +1,7 @@
 using HotelBusinessLogic.BusinessLogic;
 using HotelContracts.BusinessLogicsContracts;
 using HotelContracts.StoragesContracts;
-using HotelDataBaseImplement.Implemets;
+using HotelDataBaseImplement.Implements;
 using Microsoft.OpenApi.Models;
 
 var builder = WebApplication.CreateBuilder(args);