Wsrtjtyk

For example, I have orders model:

int Id

string Name

User user

How to return something like that in response when getting orders, when orders table has user id column:

{

id: 1,

name: "Order 1",

user: "Some username"

}

I know it can look easy question, but I'm new to C# and .NET and don't exactly know the terminology and for what tutorial should I look for.

Basically what you need is to return a Data Transfer Object (DTO).
Create another class, say OrderDTO.

public class OrderDto

{

    public int Id { get; set; }

    public string Name { get; set; }

    public string User { get; set; }

}

Then map your order object(s) to OrderDto before returning them as your response.

 var oderDto = new OrderDto { 

      Id = orderModel.Id,

      Name = orderModel,

      User = oder.User.Username // or some other property you want

 };

Automapper would be a very good library to use for the mapping part.

Your actions will then look something like this

 public ActionResult GetStuff()

 {

      var orderModel = ....; // do your thing to get your order

      var responseObj = Mapper.Map<OrderDto>(orderModel);

      return StatusCode(200, responseObj); 

 }

The framework will then do the conversion from the DTO class to Json for you.