我使用带有弹出编辑器的Kendo Grid来显示数据库中的行。行来自“FemaleAdvice”表。在FemaleCategory是查找表的意义上,每个FemaleAdvice对象将属于一个FemaleCategory,当用户选择一个FemaleCategory时,将显示一个FemaleAdvice对象标题和描述的列表。
在让用户编辑一个FemaleAdvice对象所属的FemaleCategory时,显示类别的标题而不是数据库密钥是有意义的。我已经采取了几个步骤来做到这一点,但是当我点击“添加新记录”时,我在控制台中收到“未捕获:ReferenceError:类别未定义”错误。我觉得这很容易,但我对MVC / Kendo有点新意,所以我的无知正在显现。我的代码如下:
//FemaleAdvice Model
[Key]
[ScaffoldColumn(false)]
public Int64 FemaleAdviceKey { get; set; }
public string Title { get; set; }
public string Description { get; set; }
[Required]
[UIHint("FemaleCategoryKey")]
[DisplayName("Female Category")]
public Int64 FemaleCategoryKey { get; set; }
public virtual FemaleCategory Category { get; set; }
[UIHint("Body")]
public string Body { get; set; }
[ScaffoldColumn(false)]
public DateTime LastUpdated { get; set; }
//*************FemaleAdvice View**************
@(Html.Kendo().Grid<com.RomanceCoachOnTheGo.MVC.Models.FemaleAdvice>()
.Name("FemaleAdvice")
.ToolBar(toolbar =>
{
toolbar.Create();
})
.DataSource(dataSource => dataSource
.Ajax()
.Model(item => { item.Id(m => m.FemaleAdviceKey); })
.Create(c => c.Action("CreateFemaleAdvice", "Administrator"))
.Read(r => r.Action("ReadFemaleAdvice", "Administrator"))
.Update(u => u.Action("UpdateFemaleAdvice", "Administrator"))
.Destroy(d => d.Action("DeleteFemaleAdvice", "Administrator"))
)
.Columns(col =>
{
col.Bound(c => c.FemaleCategoryKey).ClientTemplate("#=Category.Title#");
col.Bound(c => c.Title);
col.Bound(c => c.Description);
col.Bound(c => c.Body);
col.Command(command => { command.Edit(); command.Destroy(); });
})
.Editable(editing => editing.Mode(GridEditMode.PopUp))
.Sortable()
.Pageable()
.Filterable()
)
//***********Relevant Controller Action***************
public ActionResult ReadFemaleAdvice([DataSourceRequest] DataSourceRequest request)
{
List<FemaleAdvice> advice = _db.FemaleAdvice.Include("Category").AllActive().ToList();
return Json(advice.ToDataSourceResult(request), JsonRequestBehavior.AllowGet);
}
public ActionResult CreateFemaleAdvice([DataSourceRequest] DataSourceRequest request, FemaleAdvice advice)
{
if (ModelState.IsValid)
{
advice.IsActive = true;
_db.FemaleAdvice.Add(advice);
_db.SaveChanges();
}
return Json(new[] { advice }.ToDataSourceResult(request), JsonRequestBehavior.AllowGet);
}
答案 0 :(得分:0)
问题出现了,因为当您添加记录时,Category
为空。所以剑道不知道如何渲染你在这里给出的模板:
col.Bound(c => c.FemaleCategoryKey).ClientTemplate("#=Category.Title#");
不幸的是,Kendo模板语法在处理空值方面做得不好,所以你必须自己检查。将模板更改为以下内容:
#= Category != null ? Category.Title : '' #
如果已设置,将打印出Category.Title
,否则在设置之前它将为空字符串。