Написана (почти) бизнес логика для Поставщик. Нужна логика для отчетов

UniversityBusinessLogic/BusinessLogics/DocumentLogic.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+using UniversityContracts.ViewModels;
+
+namespace UniversityBusinessLogic.BusinessLogics
+{
+    public class DocumentLogic : IDocumentLogic
+    {
+        private readonly IDocumentStorage _documentStorage;
+
+        public DocumentLogic(IDocumentStorage documentStorage)
+        {
+            _documentStorage = documentStorage;
+        }
+        public bool Create(DocumentBindingModel model)
+        {
+            CheckModel(model);
+            if(_documentStorage.Insert(model) == null) 
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Update(DocumentBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_documentStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(DocumentBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_documentStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public DocumentViewModel? ReadElement(DocumentSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var document = _documentStorage.GetElement(model);
+            if (document == null)
+            {
+                return null;
+            }
+            return document;
+        }
+        public List<DocumentViewModel>? ReadList(DocumentSearchModel? model)
+        {
+            var list = model == null ? _documentStorage.GetFullList() : _documentStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        private void CheckModel(DocumentBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия документа", nameof(model.Name));
+            }
+            if (model.Date > DateTime.Now)
+            {
+                throw new ArgumentNullException("Неверно указана дата", nameof(model.Name));
+            }
+
+            var document = _documentStorage.GetElement(new DocumentSearchModel
+            {
+                Name = model.Name,
+            });
+            if (document != null && document.Id != model.Id)
+            {
+                throw new InvalidOperationException("Приказ с таким названием уже есть");
+            }
+        }
+    }
+}

UniversityBusinessLogic/BusinessLogics/EducationStatusLogic.cs

@@ -0,0 +1,99 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+using UniversityContracts.ViewModels;
+
+namespace UniversityBusinessLogic.BusinessLogics
+{
+    public class EducationStatusLogic : IEducationStatusLogic
+    {
+        private readonly IEducationStatusStorage _esStorage;
+
+        public EducationStatusLogic(IEducationStatusStorage cardStorage)
+        {
+            _esStorage = cardStorage;
+        }
+
+        public bool Create(EducationStatusBindingModel model)
+        {
+            CheckModel(model);
+            if (_esStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Update(EducationStatusBindingModel model)
+        {
+            CheckModel(model);
+            if (_esStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(EducationStatusBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_esStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public EducationStatusViewModel? ReadElement(EducationStatusSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var es = _esStorage.GetElement(model);
+            if (es == null)
+            {
+                return null;
+            }
+            return es;
+        }
+
+        public List<EducationStatusViewModel>? ReadList(EducationStatusSearchModel? model)
+        {
+            var list = model == null ? _esStorage.GetFullList() : _esStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        private void CheckModel(EducationStatusBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия статуса обучения", nameof(model.Name));
+            }
+
+            var es = _esStorage.GetElement(new EducationStatusSearchModel
+            {
+                Name = model.Name,
+            });
+            if (es != null && es.Id != model.Id)
+            {
+                throw new InvalidOperationException("Статус с таким названием уже есть");
+            }
+        }
+    }
+}

UniversityBusinessLogic/BusinessLogics/ReportProviderLogic.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.ViewModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+
+namespace UniversityBusinessLogic.BusinessLogics
+{
+    public class ReportProviderLogic : IReportProviderLogic
+    {
+        private readonly IDocumentStorage _documentStorage;
+
+        public List<ReportStudentsDisciplineViewModel> GetStudentsDiscipline()
+        {
+            throw new NotImplementedException();
+        }
+        public List<ReportStreamStudentEdStatPeriodViewModel> StreamStudentEdStatPeriod(ReportBindingModel model)
+        {
+            
+        }
+
+        public void SaveBlanksToWordFile(ReportBindingModel model)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void SaveDocumentBlankToExcelFile(ReportBindingModel model)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void SaveOrdersToPdfFile(ReportBindingModel model)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

UniversityBusinessLogic/BusinessLogics/StudentLogic.cs

@@ -0,0 +1,103 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+using UniversityContracts.ViewModels;
+
+namespace UniversityBusinessLogic.BusinessLogics
+{
+    public class StudentLogic : IStudentLogic
+    {
+        private readonly IStudentStorage _studentStorage;
+
+        public StudentLogic(IStudentStorage studentStorage)
+        {
+            _studentStorage = studentStorage;
+        }
+
+        public bool Create(StudentBindingModel model)
+        {
+            CheckModel(model);
+            if (_studentStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Update(StudentBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_studentStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(StudentBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_studentStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public StudentViewModel? ReadElement(StudentSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var student = _studentStorage.GetElement(model);
+            if (student == null)
+            {
+                return null;
+            }
+            return student;
+        }
+
+        public List<StudentViewModel>? ReadList(StudentSearchModel? model)
+        {
+            var list = model == null ? _studentStorage.GetFullList() : _studentStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        private void CheckModel(StudentBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия документа", nameof(model.Name));
+            }
+            if (model.StudentCard <= 0)
+            {
+                throw new ArgumentNullException("Неверно указан номер студенческого билета", nameof(model.Name));
+            }
+
+            var student = _studentStorage.GetElement(new StudentSearchModel
+            {
+                StudentCard = model.StudentCard,
+            });
+            if (student != null && student.Id != model.Id)
+            {
+                throw new InvalidOperationException("Приказ с таким названием уже есть");
+            }
+        }
+    }
+}

UniversityBusinessLogic/Class1.cs

@@ -1,5 +0,0 @@
-namespace UniversityBusinessLogic;
-public class Class1
-{
-
-}

UniversityBusinessLogic/OfficePackage/AbstractSaveToExcelProvider.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityBusinessLogic.OfficePackage
+{
+    public abstract class AbstractSaveToExcelProvider
+    {
+    }
+}

UniversityBusinessLogic/OfficePackage/AbstractSaveToPdfProvider.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityBusinessLogic.OfficePackage
+{
+    public abstract class AbstractSaveToPdfProvider
+    {
+    }
+}

UniversityBusinessLogic/OfficePackage/AbstractSaveToWordProvider.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityBusinessLogic.OfficePackage
+{
+    public abstract class AbstractSaveToWordProvider
+    {
+    }
+}

UniversityBusinessLogic/UniversityBusinessLogic.csproj

@@ -6,4 +6,14 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\UniversityContracts\UniversityContracts.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="OfficePackage\HelperEnums\" />
+    <Folder Include="OfficePackage\HelperModels\" />
+    <Folder Include="OfficePackage\Implements\" />
+  </ItemGroup>
+
 </Project>

UniversityContracts/BindingModels/ReportBindingModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.BindingModels
+{
+    public class ReportBindingModel
+    {
+        public string FileName { get; set; } = string.Empty;
+        public DateTime? DateFrom { get; set; }
+        public DateTime? DateTo { get; set; }
+    }
+}

UniversityContracts/BusinessLogicContracts/IDocumentLogic.cs

@@ -4,6 +4,8 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BusinessLogicContracts
 {

UniversityContracts/BusinessLogicContracts/IEducationStatusLogic.cs

@@ -4,6 +4,8 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BusinessLogicContracts
 {

UniversityContracts/BusinessLogicContracts/IReportProviderLogic.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.ViewModels;
+
+namespace UniversityContracts.BusinessLogicContracts
+{
+    public interface IReportProviderLogic
+    {
+        List<ReportStudentsDisciplineViewModel> GetStudentsDiscipline();
+
+        List<ReportStreamStudentEdStatPeriodViewModel> StreamStudentEdStatPeriod(ReportBindingModel model);
+
+        void SaveBlanksToWordFile(ReportBindingModel model);
+
+        void SaveDocumentBlankToExcelFile(ReportBindingModel model);
+
+        void SaveOrdersToPdfFile(ReportBindingModel model);
+    }
+}

UniversityContracts/BusinessLogicContracts/IStudentLogic.cs

@@ -4,6 +4,8 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BusinessLogicContracts
 {

UniversityContracts/SearchModels/DocumentSearchModel.cs

@@ -9,6 +9,7 @@ namespace UniversityContracts.SearchModels
     public class DocumentSearchModel
     {
         public int? Id { get; set; }
+        public string? Name { get; set; }        
         public int? UserId { get; set; }
     }
 }

UniversityContracts/SearchModels/StudentSearchModel.cs

@@ -9,6 +9,9 @@ namespace UniversityContracts.SearchModels
     public class StudentSearchModel
     {
         public int? Id { get; set; }
+        public int? StudentCard { get; set; }
         public int? UserId { get; set; }
+        public DateTime? DateFrom { get; set; }
+        public DateTime? DateTo { get; set; }
     }
 }

UniversityContracts/ViewModels/ReportStreamStudentEdStatPeriodViewModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.ViewModels
+{
+    public class ReportStreamStudentEdStatPeriodViewModel
+    {
+        public string StreamName { get; set; } = string.Empty;
+        public List<(string StudentFIO, string EdStatus)> StudentEdStatus { get; set; } = new();
+    }
+}

UniversityContracts/ViewModels/ReportStudentsDisciplineViewModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UniversityContracts.ViewModels
+{
+    public class ReportStudentsDisciplineViewModel
+    {
+        public string StudentFIO { get; set; } = string.Empty;
+        public List<string> Disciplines { get; set; } = new();
+    }
+}

UniversityDataBaseImplemet/Implements/DocumentStorage.cs

@@ -24,8 +24,9 @@ namespace UniversityDataBaseImplemet.Implements
             using var context = new Database();
             return context.Documents
                 .Include(record => record.User)
-                .FirstOrDefault(record => record.Id == model.Id)?
+                .FirstOrDefault(record => record.Id == model.Id
-                .GetViewModel;
+                    || record.Name.Equals(model.Name))
+                ?.GetViewModel;
         }
         public List<DocumentViewModel> GetFilteredList(DocumentSearchModel model)
         {
@@ -33,7 +34,7 @@ namespace UniversityDataBaseImplemet.Implements
             if (model.Id.HasValue)
             {
                 return context.Documents
-                    .Include(x => x.User)
+                    .Include(record => record.User)
                     .Where(record => record.Id.Equals(model.Id))
                     .Select(record => record.GetViewModel)
                     .ToList();
@@ -41,11 +42,11 @@ namespace UniversityDataBaseImplemet.Implements
             else if (model.UserId.HasValue)
             {
                 return context.Documents
-                   .Include(x => x.User)
+                   .Include(record => record.User)
-                   .Where(x => x.UserId == model.UserId)
+                   .Where(record => record.UserId == model.UserId)
-                   .Select(x => x.GetViewModel)
+                   .Select(record => record.GetViewModel)
                    .ToList();
-            }
+            }            
             else
             {
                 return new();
@@ -78,7 +79,7 @@ namespace UniversityDataBaseImplemet.Implements
             try
             {
                 var document = context.Documents
-                    .Include(x => x.User)
+                    .Include(record => record.User)
                     .FirstOrDefault(record => record.Id.Equals(model.Id));
                 if (document == null)
                 {
@@ -99,7 +100,7 @@ namespace UniversityDataBaseImplemet.Implements
         {
             using var context = new Database();
             var document = context.Documents
-                .Include(x => x.User)
+                .Include(record => record.User)
                 .FirstOrDefault(record => record.Id.Equals(model.Id));
             if (document == null)
             {

UniversityDataBaseImplemet/Implements/EducationStatusStorage.cs

@@ -22,9 +22,10 @@ namespace UniversityDataBaseImplemet.Implements
             }
             using var context = new Database();
             return context.EducationStatuses
-                .Include(x => x.User)
+                .Include(record => record.User)
-                .FirstOrDefault(record => record.Id == model.Id)?
+                .FirstOrDefault(record => record.Id == model.Id
-                .GetViewModel;
+                    || record.Name.Equals(model.Name))
+                ?.GetViewModel;
         }
         public List<EducationStatusViewModel> GetFilteredList(EducationStatusSearchModel model)
         {
@@ -32,7 +33,7 @@ namespace UniversityDataBaseImplemet.Implements
             if (model.Id.HasValue)
             {
                 return context.EducationStatuses
-                    .Include(x => x.User)
+                    .Include(record => record.User)
                     .Where(record => record.Id.Equals(model.Id))
                     .Select(record => record.GetViewModel)
                     .ToList();
@@ -40,9 +41,9 @@ namespace UniversityDataBaseImplemet.Implements
             else if (model.UserId.HasValue)
             {
                 return context.EducationStatuses
-                   .Include(x => x.User)
+                   .Include(record => record.User)
-                   .Where(x => x.UserId == model.UserId)
+                   .Where(record => record.UserId == model.UserId)
-                   .Select(x => x.GetViewModel)
+                   .Select(record => record.GetViewModel)
                    .ToList();
             }
             else
@@ -54,7 +55,7 @@ namespace UniversityDataBaseImplemet.Implements
         {
             using var context = new Database();
             return context.EducationStatuses
-                .Include(x => x.User)
+                .Include(record => record.User)
                 .Select(record => record.GetViewModel)
                 .ToList();
         }
@@ -69,8 +70,8 @@ namespace UniversityDataBaseImplemet.Implements
             context.EducationStatuses.Add(newEducationStatus);
             context.SaveChanges();
             return context.EducationStatuses
-                .Include(x => x.User)
+                .Include(record => record.User)
-                .FirstOrDefault(x => x.Id.Equals(newEducationStatus.Id))
+                .FirstOrDefault(record => record.Id.Equals(newEducationStatus.Id))
                 ?.GetViewModel;
         }
         public EducationStatusViewModel? Update(EducationStatusBindingModel model)
@@ -80,7 +81,7 @@ namespace UniversityDataBaseImplemet.Implements
             try
             {
                 var educationStatus = context.EducationStatuses
-                    .Include(x => x.User)
+                    .Include(record => record.User)
                     .FirstOrDefault(record => record.Id.Equals(model.Id));
                 if (educationStatus == null)
                 {
@@ -101,7 +102,7 @@ namespace UniversityDataBaseImplemet.Implements
         {
             using var context = new Database();
             var educationStatus = context.EducationStatuses
-                .Include(x => x.User)
+                .Include(record => record.User)
                 .FirstOrDefault(record => record.Id.Equals(model.Id));
             if (educationStatus == null)
             {

UniversityDataBaseImplemet/Implements/StudentStorage.cs

@@ -1,6 +1,7 @@
 using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Security.Cryptography.X509Certificates;
 using System.Text;
@@ -17,7 +18,7 @@ namespace UniversityDataBaseImplemet.Implements
     {
         public StudentViewModel? GetElement(StudentSearchModel model)
         {
-            if (!model.Id.HasValue)
+            if (!model.Id.HasValue && model.StudentCard <= 0)
             {
                 return null;
             }
@@ -25,7 +26,8 @@ namespace UniversityDataBaseImplemet.Implements
             return context.Students
                 .Include(record => record.User)
                 .Include(record => record.EducationStatus)
-                .FirstOrDefault(record => record.Id.Equals(model.Id))
+                .FirstOrDefault(record => record.Id.Equals(model.Id) 
+                    || record.StudentCard.Equals(model.StudentCard))
                 ?.GetViewModel;
         }
         public List<StudentViewModel> GetFilteredList(StudentSearchModel model)
@@ -35,7 +37,7 @@ namespace UniversityDataBaseImplemet.Implements
             {
                 return context.Students
                 .Include(record => record.EducationStatus)
-                .Include(x => x.User)
+                .Include(record => record.User)
                 .Where(record => record.Id.Equals(model.Id))
                 .Select(record => record.GetViewModel)
                 .ToList();
@@ -43,12 +45,35 @@ namespace UniversityDataBaseImplemet.Implements
             else if (model.UserId.HasValue)
             {
                 return context.Students
-                   .Include(x => x.EducationStatus)
+                   .Include(record => record.EducationStatus)
-                   .Include(x => x.User)
+                   .Include(record => record.User)
-                   .Where(x => x.UserId == model.UserId)
+                   .Where(record => record.UserId == model.UserId)
-                   .Select(x => x.GetViewModel)
+                   .Select(record => record.GetViewModel)
                    .ToList();
             }
+            /*else if (model.DateFrom != null && model.DateTo != null) // для отчета#2 Поставщик
+            {
+                return context.Students
+                    .Include(record => record.User)
+                    .Include(record => record.EducationStatus)
+                    .Join(context.StudentStreams, student => student.Id, studentStream => studentStream.StudentId, (student, studentStream) => new { Student = student, StreamId = studentStream.StreamId })
+                    .Join(context.Streams, studentStream => studentStream.StreamId, stream => stream.Id, (studentStream, stream) => new { Student = studentStream.Student, Stream = stream })
+                    .GroupBy(record => record.Stream)
+                    .Select(result => new
+                    {
+                        Stream = result.Key,
+                        Students = result.Select(record => (record.Student, record.EducationStatus)).ToList()
+                    })
+                    .ToList();
+                var result = context.Students
+                    .Include(student => student.User)
+                    .Include(student => student.StudentStreams)
+                        .ThenInclude(studentStream => studentStream.Stream)
+                            .ThenInclude(stream => stream.Disciplines)
+                    .SelectMany(student => student.StudentStreams, (student, studentStream) => new { Student = student, Stream = studentStream.Stream })
+                    .Select(record => new { StudentName = record.Student.User.Name + " " + record.Student.User.Surname, Discipline = record.Stream.Disciplines })
+                    .ToList();
+            }*/
             else
             {
                 return new();
@@ -58,8 +83,8 @@ namespace UniversityDataBaseImplemet.Implements
         {
             using var context = new Database();
             return context.Students
-                .Include(x => x.User)
+                .Include(record => record.User)
-                .Include(x => x.EducationStatus)
+                .Include(record => record.EducationStatus)
                 .Select(record => record.GetViewModel)
                 .ToList();
         }
@@ -82,8 +107,8 @@ namespace UniversityDataBaseImplemet.Implements
             try
             {
                 var student = context.Students
-                    .Include(x => x.User)
+                    .Include(record => record.User)
-                    .Include(x => x.EducationStatus)
+                    .Include(record => record.EducationStatus)
                     .FirstOrDefault(record => record.Id.Equals(model.Id));
                 if (student == null)
                 {
@@ -104,8 +129,8 @@ namespace UniversityDataBaseImplemet.Implements
         {
             using var context = new Database();
             var student = context.Students
-                .Include(x => x.User)
+                .Include(record => record.User)
-                .Include(x => x.EducationStatus)
+                .Include(record => record.EducationStatus)
                 .FirstOrDefault(record => record.Id.Equals(model.Id));
             if (student == null)
             {