API return 评论为空属性

Question

我正在尝试创建一个简单的方法 GET 来检索酒店实体的信息，但在尝试获取评论（由用户添加）时卡住了。在数据库中，评论实体存储有 5 个属性：

int Id(Primarykey)
int SenderId(User who sent review)
int RecipientId(The hotel reviewed by user)
int point
string comment

评论的模型：

 public class Review
{
    public int Id { get; set; }
    public User Sender { get; set; }
    public int SenderId {get; set; }
    public Hotel Recipient { get; set; }
    public int RecipientId { get; set; }
    public DateTime DateAdded { get; set; }
    public int Point { get; set; }
    public string Comment { get; set; }
    public bool SenderDeleted { get; set; }
}

酒店的汽车旅馆：

 public class Hotel 
{
    public int Id { get; set; }
    public string HotelName { get; set; }
    public string Description { get; set; }
    public double Price { get; set; }
    public string Address { get; set; }
    public int Rooms { get; set; }
    public int Beds { get; set; }
    public int Bathrooms { get; set; }
    public string City { get; set; }
    public string Country { get; set; }
    public bool Status { get; set; }
    public ICollection<Review> ReviewsReceived { get; set; }

}

在 Myrepository.cs 中，我声明了 GetHotel 函数：

public async Task<Hotel> GetHotel(int id)
    {
        var hotel = await _context.Hotels.Include(r => 
        r.ReviewsReceived).FirstOrDefaultAsync(h => h.Id == id);
        return hotel;
    }

在HotelsController.cs中：

[HttpGet("{id}")]
    public async Task<IActionResult> GetHotel(int id)
    {
        var hotel = await Myrepository.GetHotel(id);
        var hotelToReturn = IMapper.Map<HotelForDetailedDto>(hotel);
        return Ok(hotelToReturn);
    }

在HotelForDetailedDto.cs中：

 public class HotelForDetailedDto
{   
    public string HotelName { get; set; }
    public string Description { get; set; }
    public double Price { get; set; }
    public string Address { get; set; }
    public int Rooms { get; set; }
    public int Beds { get; set; }
    public int Bathrooms { get; set; }
    public string City { get; set; }
    public string Country { get; set; }
    public bool Status { get; set; }
    public ICollection<ReviewForDetailedDto> Reviews { get; set; }
}

在ReviewForDetailDto.cs中：

public class ReviewForDetailedDto
{
    public int Id { get; set; }
    public int SenderId { get; set; }  // userId
    public int Point { get; set; }
    public string Comment { get; set; }
}

我创建了 Map 方法以供审核：

CreateMap<Review, ReviewForDetailedDto>();

这是我收到的：

{
"hotelName": "Dentrex",
"description": "Eu incididunt pariatur non veniam veniam reprehenderit 
cillum adipisicing consequat cillum aliqua in. Ut ut reprehenderit commodo 
tempor cillum in sit anim labore in et proident commodo. Fugiat eni.\r\n",
"price": 2349.79,
"address": "Gelston Avenue",
"rooms": 487,
"beds": 2,
"bathrooms": 2,
"city": "Ronco",
"country": "Algeria",
"status": false,
"reviews": null
}

所以我想要的是评论应该 return 所有属性通过 AutoMapper 在 ReviewForDetailDto 中声明的。

请帮忙。

Answer 1

您的“ReviewsReceived”属性在您的酒店模型中的名称不是同名的你的“评论”属性在你的HotelForDetailedDto模型

您可以重命名它或使用 forMember() 方法配置映射

API return 评论为空属性

API return null in reviews property

c#

automapper

asp.net-core

API return 评论为空 属性

API return null in reviews property

c#

automapper

asp.net-core

API return 评论为空属性