我有一个由EF从存储过程生成的Complext类型。它返回 GetAvailableRooms_Results 的列表。我希望用户选择2个日期,然后返回存储过程返回的可用房间列表(复杂类型)。
我不是百分百确定我是否需要通过使用Ajax.Begin表单,Ajax.Action链接或不可避免的ajax和jquery将一个复杂类型返回给我,我已经尝试过了因为不同的原因,每次都失败了。
我无法找到使用Ajax返回复杂类型的示例。另外,我通常很难使用JavaScript而不是发布问题,但是最后一次屏幕截图是让我在这里提出问题的原因...因为我不认为它与JavaScript有关。
存储过程 - GetAvailableRooms
declare @arrive as datetime, @depart as datetime
set @arrive = '2013/11/29'
set @depart = '2013/12/01'
SELECT Room.Name, Format(Reservation.StartDate,'D') AS 'Date',
(Room.Capacity) - (Count(Reservation.StartDate)) AS Available,
Count(RoomReservation.RoomId) AS 'Reservations', Room.Gender
FROM Room
FULL JOIN RoomReservation
ON RoomReservation.RoomId = Room.RoomId
FULL JOIN Reservation
ON Reservation.ReservationId = RoomReservation.ReservationId
WHERE StartDate BETWEEN @arrive AND @depart
GROUP BY Room.Capacity, Room.Gender, Room.Name, Reservation.StartDate,
Reservation.EndDate
public partial class GetAvailableRooms_Result
{
public string Name { get; set; }
public Nullable<int> Available { get; set; }
public Nullable<int> Reservations { get; set; }
public Nullable<System.DateTime> Date { get; set; }
public Nullable<bool> Gender { get; set; }
}
@Html.ActionLink("Available Rooms", "Index",
controllerName: "GetAvailableRooms_Result",
routeValues: new { arrive = item.StartDate, depart = item.EndDate },
htmlAttributes: item.StartDate)
我尝试使用 Ajax.ActionLink 将结果复杂类型的部分视图返回到我调用它的页面。像这样......
@using Skimos.Models
@model List<ReservationIndexViewModel>
@{
ViewBag.Title = "Index";
}
<h2>Index</h2>
<p>
@Html.ActionLink("Create New", "Create")
</p>
<table class="table table-striped">
<tr>
<th>
Room Name
</th>
<th>
Arrival Date
</th>
<th>
Depart Date
</th>
<th>
Member Id
</th>
<th>
Price
</th>
<th>
Rooms
</th>
<th></th>
</tr>
@foreach (var item in Model)
{
<tr>
<td>
@Skimos.Services.HtmlHelpers.RoomName(item.RoomId)
</td>
<td>
@Html.DisplayFor(modelItem => item.StartDate)
</td>
<td>
@Html.DisplayFor(modelItem => item.EndDate)
</td>
<td>
@Html.DisplayFor(modelItem => item.Price)
</td>
<td>
@Html.ActionLink("Meals", "AvailableMeals",
new { arrive = item.StartDate, depart = item.EndDate })
</td>
<td>
@Html.ActionLink("Available Rooms", "Index",
"GetAvailableRooms_Result",
new { arrive = item.StartDate.Date, depart = item.EndDate.Date },
item.StartDate.Date)//<-- this was just required for the
overload I also tried it as null.
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { id=item.ReservationId }) |
@Html.ActionLink("Details", "Details", new { id=item.ReservationId }) |
@Html.ActionLink("Delete", "Delete", new { id=item.ReservationId })
</td>
</tr>
}
</table>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
@Scripts.Render("~/bundles/Bootstrap-datepicker")
@Scripts.Render("~/Scripts/jquery.unobtrusive-ajax.min.js")
<script type="text/javascript">
$('.datepicker ').datepicker({
weekStart: 1,
autoclose: true,
todayHighlight: true,
});
</script>
}
我为复杂类型创建了一个控制器,并使用 Ajax.Beginform 返回存储的复杂类型的局部视图。
使用Skimos.Models @model列表 @ { ViewBag.Title =“StartReservation”; }
<h2>StartReservation</h2>
@using (Ajax.BeginForm("AvailableRooms", new AjaxOptions
{ HttpMethod = "Get", UpdateTargetId = "rooms",
OnFailure = "searchFailed", OnSuccess = "data" }))
{
<input class="datepicker" id="StartDate"
name="StartDate" tabindex="1" type="text" value="">
<input class="datepicker" id="EndDate"
name="EndDate" tabindex="1" type="text" value="">
<input type="submit" class="btn-warning" />
<div id="rooms">
</div>
}
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
@Scripts.Render("~/bundles/Bootstrap-datepicker")
@Scripts.Render("~/Scripts/jquery.unobtrusive-ajax.min.js")
}
<script type="text/javascript">
$('.datepicker').datepicker({
weekStart: 1,
autoclose: true,
todayHighlight: true,
});
function searchFailed() { $("#availableRooms").html("Search failed."); }
</script>
下面是一个ActionResult,我尝试在局部视图中返回复杂类型。
public ActionResult AvailableRooms(DateTime arrive, DateTime depart)
{
var rooms = db.GetAvailableRooms(arrive, depart);
return PartialView("AvailabeRooms", rooms.ToList());
}
返回此错误:参数字典包含方法'System.Web.Mvc.ActionResult AvailableRooms(System。)的非可空类型'System.DateTime'的参数'arrival'的空条目。 'Skimos.Controllers.ReservationController'中的DateTime,System.DateTime)'。可选参数必须是引用类型,可空类型,或者声明为可选参数。
答案 0 :(得分:1)
您似乎将日期格式化为存储过程中的字符串。 EF正在尝试将此字符串值设置为Date?
字段(Nullable<System.Date>
),并且该字段不接受字符串。
导致问题的存储过程:
SELECT Room.Name, Format(Reservation.StartDate,'D') AS 'Date', -- <-- this is formatting as a string, not a datetime.
(Room.Capacity) - (Count(Reservation.StartDate)) AS Available,
Count(RoomReservation.RoomId) AS 'Reservations', Room.Gender --...
将GetAvailableRoomsResult对象更改为以下内容:
public partial class GetAvailableRooms_Result
{
public string Name { get; set; }
public Nullable<int> Available { get; set; }
public Nullable<int> Reservations { get; set; }
public String Date { get; set; } // <-- change is here.
public Nullable<bool> Gender { get; set; }
}