Question

我有： GuestResponseRepository，IRepository - ＆gt;接口，HomeController - ＆gt;控制，谢谢 - ＆gt;图

GuestReresponseRepository有一个包含响应的列表。当我通过表单添加响应时，响应将添加到列表中。当您尝试使用相同的值第二次添加响应时，AddReponse方法返回false。我想在视图中使用bool来显示不同的文本。我怎样才能做到这一点？在我的代码下面

GuestResponseRepository

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using PartyInvites.Abstract;

namespace PartyInvites.Models
{
public class GuestResponseRepository : IRepository

{
    private static List<GuestResponse> responses = new List<GuestResponse>();

    IEnumerable<GuestResponse> IRepository.GetAllResponses()
    {
        return responses;
    }

    bool IRepository.AddResponse(GuestResponse response)
    {
        if (responses.Any(x => x.Email == response.Email)) //here
        {
            if (responses.Any(x => x.WillAttend == response.WillAttend)) //here
            {
                return false;
            }

            var attend = responses.First(x => x.Email == response.Email && x.WillAttend != response.WillAttend);
            attend.WillAttend = response.WillAttend;
            return true;
        }

        responses.Add(response);
        return true;
    }
}
}

IRepository

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using PartyInvites.Models;

namespace PartyInvites.Abstract
   {
     public interface IRepository
    {
        IEnumerable<GuestResponse> GetAllResponses();
        bool AddResponse(GuestResponse response);
    }
}

控制器

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using PartyInvites.Models;
using PartyInvites.Abstract;


namespace PartyInvites.Controllers {
public class HomeController : Controller {
    private IRepository repository;

    public HomeController(IRepository iRepository)
    {
        this.repository = iRepository;
    }

    public ViewResult Index() {

        return View(repository.GetAllResponses());
    }


    public ViewResult PartyPeople()
    {
        return View(repository.GetAllResponses());
    }

    [HttpGet]
    public ViewResult RsvpForm() {
        return View();
    }

    [HttpPost]
    public ViewResult RsvpForm(GuestResponse guestResponse) {
        if (ModelState.IsValid) {

           repository.AddResponse(guestResponse);                
            return View("Thanks", guestResponse);
        }
        else
        {
            // there is a validation error
            return View();
        }
    }
}
}

视图

@model PartyInvites.Models.GuestResponse

@{
ViewBag.Title = "Thanks";
}

<div class="text-center">
    <h1>Thank you, @Model.Name!</h1>
    <div class="lead">
        @if (Model.WillAttend == true) {
            @:It's great that you're coming. The drinks are already in the fridge!
        } else {
            @:Sorry to hear that you can't make it, but thanks for letting us know.
        }

        @if (bool from Addresponse is false) {
            @:<p>You already submitted this response. Are you sure this is right?</p>
        }

    </div>
    <a href="/Home/PartyPeople">Link naar pp</a>
</div>

Answer 1

从布尔变量中的AddResponses捕获返回值，并在ViewBag object

中设置自定义属性

 bool result = repository.AddResponse(guestResponse);                
 ViewBag.Response = result;
 return View("Thanks", guestResponse);

现在在Thanks视图中，您可以使用此属性来决定要写入的文本

@model PartyInvites.Models.GuestResponse
@{
   ViewBag.Title = "Thanks";
   bool response = (ViewBag.Response != null ? Convert.ToBoolean(ViewBag.Response) : false);
 }

 .....

@if (!response) {
    @:<p>You already submitted this response. Are you sure this is right?</p>
}

存储库bool到视图

1 个答案: