使用ViewModel添加模型的多個實例

Question

我有模特活動和門票

public class Event
{
    public int EventID { get; set; }
    [Required]
    public String Name { get; set; }
    [Required]
    public String Location { get; set; }

    [Required]
    [DataType(DataType.Date)]
    public DateTime Date { get; set; }
    [Required]
    [DataType(DataType.MultilineText)]
    public String Description { get; set; }
    [Required]
    public int TicketsAvailable { get; set; }
    //navigation property
    public virtual ICollection<Order> Order { get; set; }
    //navigation property
    public virtual ICollection<Ticket> Ticket { get; set; }
}

public class Ticket
{
   public int TicketID { get; set; }
   [Required]
   [ForeignKey("Event")]
   //foreign key
    public int EventID { get; set; }
   [Required]
   public string Description { get; set; }
   [Required]
   public float Price { get; set; }
    //navigation property
    public virtual Event Event { get; set; }
    //navigation property
    public ICollection<OrderDetails> OrderDetails { get; set; }
}

我創建了兩個視圖模型，以便我可以為每個事件添加多個票證

public class TicketVm
{
    [Required]
    public string Description { get; set; }
    [Required]
    public float Price { get; set; }
}

public class CreateTicketVm
{
    public int EventId { get; set; }
    public List<TicketVm> Tickets { set; get; }
}

然后，我有一個視圖，該視圖允許用戶創建一個新事件。 然后，當他們提交此事件時，將它們定向到CreateTicket視圖，該視圖應使用與創建的事件相同的EventID向該事件添加新的票證。

這是我的創建票證視圖

@model Site.Models.CreateTicketVm

<head>
<title>Create Event Tickets</title>
<link href="Content/TicketStyles.css" rel="stylesheet" type="text/css">
</head>


<h3> Tickets</h3>
<div id="tickets"></div>
@Html.HiddenFor(s => s.EventId)

<input type="button" id="add" value="Add Ticket" />
<input type="submit" id="btnSave" />

@section scripts{
<script>
$(function () {
    //Lets create the first row
    addNewRow();

    $("#add").click(function (e) {
        e.preventDefault();
        addNewRow();
    });

    $("#btnSave").click(function (e) {
        e.preventDefault();

        var createTicket = { EventId: $("#EventId").val(), Tickets: [] };
        var rows = $("#tickets").find(".item");

        $.each(rows, function (i, row) {
            var _row = $(this);

            var inputs = _row.find("input");
            var ticket = {};
            $.each(inputs, function (index, item) {
                var _this = $(this);
                ticket[_this.data("for")] = _this.val();
            });
            createTicket.Tickets.push(ticket);
        });

        var targetUrl = "@Url.Action("CreateTicket","Tickets1")";
        $.ajax({
            url: targetUrl,
            contentType: "application/json",
            data: JSON.stringify(createTicket),
            type: "POST"
        }).done(function (res) {
            if (res.Status === "Success") {
                window.location.href = "@Url.Action("Success")";
            }
        });
    });
});

function addNewRow() {
    $.get("@Url.Action("AddNewTicketRow","Tickets1")", function (res) {
        $("#tickets").append(res);
    });
}
</script>
}

這是我的AddNewTicket部分視圖

@model Site.Models.TicketVm
<div class="item">
    @Html.LabelFor(model => model.Description, htmlAttributes: new { @class = "control-label col-md-2" })
<div>
    @Html.TextBoxFor(model => model.Description, new { @data_for = "Description" })
</div>

@Html.LabelFor(model => model.Price, htmlAttributes: new { @class = "control-label col-md-2" })
<div>
    @Html.TextBoxFor(s => s.Price, new { @data_for = "Price" })
</div>
</div>

這是我的Tickets1Controller類

 public class Tickets1Controller : Controller
 {
    private ApplicationDbContext db = new ApplicationDbContext();


    public ActionResult CreateTicket(int id)
    {

        var vm = new CreateTicketVm { EventId = id };
        return View(vm);
    }


    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult CreateTicket(CreateTicketVm model)
    {
        if (model != null)
        {

            foreach (var ticketVm in model.Tickets)
            {
                db.Tickets.Add(new Ticket{ EventID = model.EventId, 
                 Description=ticketVm.Description, Price =ticketVm.Price});
                db.SaveChanges();

            }
            return RedirectToAction("Index");

        }
        return RedirectToAction("Index");  
    }

    public ActionResult AddNewTicketRow()
    {
        var vm = new TicketVm();
        return    PartialView("~/Views/Tickets1/Partials/AddNewTicketRow.cshtml", vm);
    }

我的故障單沒有保存，我也不明白為什么，因為將EventID傳遞到CreateTicket視圖，但是單擊“提交”按鈕並且沒有將故障單保存到我的數據庫表時，什么也沒發生。 非常感謝任何有關如何解決此問題的建議。

Answer 1

一旦我遇到了同樣的問題。我要做的是為頁面定義一個jquery變量，並在每次單擊“ AddNewTicketRow”時將其增加。並將其作為參數發送到“ AddNewTicketRow”控制器，並將其用作INDEX來創建AddNewTicket部分視圖，例如這個：

@Html.TextBoxFor(M => M.Description, new { Name = "Tickets[" + @Model.Index + "].Description", id = "Tickets[" + @Model.Index + "].Description" })

@Html.TextBoxFor(M => M.Price, new { Name = "Tickets[" + @Model.Index + "].Price", id = "Tickets[" + @Model.Index + "].Price" })

使用ViewModel添加模型的多個實例

問題描述

1 個解決方案

解決方案1
0 2015-12-13 22:57:22

使用ViewModel添加模型的多個實例

問題描述

1 個解決方案

解決方案1 0 2015-12-13 22:57:22

解決方案1
0 2015-12-13 22:57:22