N0b0dy Posts - Answer Overflow

N0b0dy

•Created by N0b0dy on 8/5/2024 in #help

Certain services could not be instantiated due to iss

Hi , I am trying implement Unit of Work design pattern.

C#  public class Repository<T> : IRepository<T> where T : class
 {
     protected readonly DbContext _context;
     protected readonly DbSet<T> _dbSet;
     protected readonly ILogger _logger;
     public Repository(DbContext context, ILogger logger)
     {
         _context = context;
         _dbSet = context.Set<T>();
         _logger = logger;
     }

     public virtual async Task<T?> GetByIdAsync(int id)
     {
         var data = await _dbSet.FindAsync(id);

         if (data == null) { return null; }
         else { return data; }
     }

     public virtual async Task<IEnumerable<T>> GetAllAsync()
     {
         return await _dbSet.ToListAsync();
     }

     public virtual async Task AddAsync(IEnumerable<T> entities)
     {
         await _dbSet.AddRangeAsync(entities);
         await _context.SaveChangesAsync();
     }

     public virtual async Task UpdateAsync(IEnumerable<T> entities)
     {
         _dbSet.UpdateRange(entities);
         await _context.SaveChangesAsync();
     }

    
 }    

 public class DepartmentRepository : Repository<Department>, IDepartmentRepository
 {
      private readonly DbContext _context;
     public DepartmentRepository(DbContext context, ILogger logger) : base(context, logger)
     {
       _context = context;
     }


     public override async Task<IEnumerable<Department>> GetAllAsync()
     {
         try
         {
             var result = await _dbSet.Where(x => x.IsActive == true).ToListAsync();
             return result.AsEnumerable();
         }
         catch (Exception ex)
         {
             _logger.LogError((ex), "{Repo} GetAllAsync ", typeof(DepartmentRepository));
             return null;
         }
     }
 }  

Program.cs
             builder.Services.AddScoped<IDepartmentRepository, DepartmentRepository>();

C#  public class Repository<T> : IRepository<T> where T : class
 {
     protected readonly DbContext _context;
     protected readonly DbSet<T> _dbSet;
     protected readonly ILogger _logger;
     public Repository(DbContext context, ILogger logger)
     {
         _context = context;
         _dbSet = context.Set<T>();
         _logger = logger;
     }

     public virtual async Task<T?> GetByIdAsync(int id)
     {
         var data = await _dbSet.FindAsync(id);

         if (data == null) { return null; }
         else { return data; }
     }

     public virtual async Task<IEnumerable<T>> GetAllAsync()
     {
         return await _dbSet.ToListAsync();
     }

     public virtual async Task AddAsync(IEnumerable<T> entities)
     {
         await _dbSet.AddRangeAsync(entities);
         await _context.SaveChangesAsync();
     }

     public virtual async Task UpdateAsync(IEnumerable<T> entities)
     {
         _dbSet.UpdateRange(entities);
         await _context.SaveChangesAsync();
     }

    
 }    

 public class DepartmentRepository : Repository<Department>, IDepartmentRepository
 {
      private readonly DbContext _context;
     public DepartmentRepository(DbContext context, ILogger logger) : base(context, logger)
     {
       _context = context;
     }


     public override async Task<IEnumerable<Department>> GetAllAsync()
     {
         try
         {
             var result = await _dbSet.Where(x => x.IsActive == true).ToListAsync();
             return result.AsEnumerable();
         }
         catch (Exception ex)
         {
             _logger.LogError((ex), "{Repo} GetAllAsync ", typeof(DepartmentRepository));
             return null;
         }
     }
 }  

Program.cs
             builder.Services.AddScoped<IDepartmentRepository, DepartmentRepository>();

I am unable to locate the mistake here. Could someone please guide me here?

38 replies

CC#

•Created by N0b0dy on 8/21/2022 in #help

Get method for API

 public Order GetById(int orderId)
        {
            var customerData = _orders.FirstOrDefault(x => x.Id == orderId);
            StandardDelivery delivery = new StandardDelivery(orderData: customerData);
            delivery.State = StandardDeliveryState.Prepare;
            delivery.State = StandardDeliveryState.Dispatch;
            delivery.State = StandardDeliveryState.Delivery;
            customerData.DeliveryDate = delivery.deliveryDate;
            delivery.Dispose();

            return customerData;
        }

 public Order GetById(int orderId)
        {
            var customerData = _orders.FirstOrDefault(x => x.Id == orderId);
            StandardDelivery delivery = new StandardDelivery(orderData: customerData);
            delivery.State = StandardDeliveryState.Prepare;
            delivery.State = StandardDeliveryState.Dispatch;
            delivery.State = StandardDeliveryState.Delivery;
            customerData.DeliveryDate = delivery.deliveryDate;
            delivery.Dispose();

            return customerData;
        }

Is it an ideal approach to set properties values before getting sending the JSON?

7 replies

CC#

•Created by N0b0dy on 8/20/2022 in #help

[Help] understanding Architecture of a parcel system

Hi, I am working on a post system which has two classes, standard and express. I am using Finite state machine to track my order from dispatch to Deliver. My architecture is like

 abstract class post

 abstract class post

where I have all the details about the order

 class standPost:post

 class standPost:post

standpost inheritances all the properties of the post class and I have added a couple status for this class. Also, I have different status for standard deliver, such as dispatch, in transit, and many more. Is there any way that I can change these standPost status automatically, so the client get notification? If someone can help me or guide, that would be appreciated. thanks

87 replies

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