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我无法找到发布/更新方法返回验证错误的 Kendo + MVC Web API 示例。看起来没有可以使以下代码工作的 Kendo 扩展。

public HttpResponseMessage Post([ModelBinder(typeof(Prototype.WebApi.ModelBinders.DataSourceRequestModelBinder))][DataSourceRequest] DataSourceRequest request, User user)
    {
        if (this.ModelState.IsValid)
        {               
           //save               
        }
        return Request.CreateErrorResponse(HttpStatusCode.BadRequest, this.ModelState.ToDataSourceResult());            
    }

因为这里的 ModelState 是 System.Web.Http.ModelBinding.ModelStateDictionary,而 Kendo 扩展需要 System.Web.Mvc.ModelStateDictionary。

那么从 Web API 向 Kendo 返回 ModelState 错误的最佳方法是什么?

4

1 回答 1

15

这对我们来说非常有用,尽管我们从来没有看到 ModelState 错误并且通常会省略那部分......

剑道网格

@model SysMaintViewModel
@(Html.Kendo().Grid<BuildingModel>()
    .Name("BuildingsGrid")
    .Columns(columns =>
    [Stuff Omitted]
    .DataSource(dataSource => dataSource
        .Ajax()
>>>     .Events(e => e.Error("error_handler"))
        .Model(model =>
        {
            model.Id(m => m.Id);
            model.Field(m => m.ProjectId).DefaultValue(Model.ProjectId);
            model.Field(m => m.IsActive).DefaultValue(true);
        })
        .Create(create => create.Action("CreateBuilding", "SysMaint"))
        .Read(read => read.Action("ReadBuildings", "SysMaint", Model))
        .Update(update => update.Action("UpdateBuilding", "SysMaint"))
        .Destroy(destroy => destroy.Action("DestroyBuilding", "SysMaint"))
    )
)

控制器

[HttpPost]
public JsonResult UpdateBuilding([DataSourceRequest]DataSourceRequest request, BuildingModel modelIn)
{
    var building = new BuildingModel();
    if (ModelState.IsValid)
    {
        try
        {
            building = _presentationService.UpdateBuilding(modelIn);
        }
        catch (Exception e)
        {
            ModelState.AddModelError(string.Empty, e.Message);
        }
    }
    else
    {
        var errMsg = ModelState.Values
            .Where(x => x.Errors.Count >= 1)
            .Aggregate("Model State Errors: ", (current, err) => current + err.Errors.Select(x => x.ErrorMessage));
        ModelState.AddModelError(string.Empty, errMsg);
    }
    var buildings = (new List<BuildingModel> {building}).ToDataSourceResult(request, ModelState);
    return Json(buildings, JsonRequestBehavior.AllowGet);
}

更新的控制器

我们发现这个流程工作得更好一些,它向 Elmah 添加了错误日志记录(通用示例)......

[HttpPost]
public JsonResult Update([DataSourceRequest]DataSourceRequest request, MyObjectModel modelIn)
{
    try
    {
        if (ModelState.IsValid)
        {
            var myObject = _presentationService.Update(modelIn, User.Identity.Name);
            var myObjectList = new List<MyObjectModel> { myObject };
            return Json(myObjectList.ToDataSourceResult(request, ModelState), JsonRequestBehavior.AllowGet);
        }
        else
        {
            var myObjectList = new List<MyObjectModel> { modelIn };
            return Json(myObjectList.ToDataSourceResult(request, ModelState), JsonRequestBehavior.AllowGet);
        }
    }
    catch (Exception e)
    {
        Elmah.ErrorSignal.FromCurrentContext().Raise(e);
        ModelState.AddModelError(string.Empty, e.Message);
        var myObjectList = new List<MyObjectModel> { modelIn };
        return Json(myObjectList.ToDataSourceResult(request, ModelState), JsonRequestBehavior.AllowGet);
    }
}

通用 JavaScript 和剑道窗口

@(Html.Kendo().Window()
    .Name("alertWindow")
    .Title("Status Message from Server")
    .Draggable()
    .Resizable()
    .Width(400)
    .Height(200)
    .Modal(true)
    .Visible(false)
)
function showAlertWindow(message) {
    var alertWindow = $('#alertWindow').data('kendoWindow');
    alertWindow.content(message);
    alertWindow.refresh();
    alertWindow.center();
    alertWindow.open();
}
function error_handler(e) {
    if (e.errors) {
        var message = "Errors:\n";
        $.each(e.errors, function (key, value) {
            if ('errors' in value) {
                $.each(value.errors, function () {
                    message += this + "\n";
                });
            }
        });
        showAlertWindow(message);
    }
}

奖金

我们的 BaseModel 还有一个 ErrorMessage 参数,我们将其他类型的错误放入检查页面加载是否应该为其他任何内容打开相同的警报窗口。

$(document).ready(function () {
    if ("@Model.ErrorMessage" != "") {
        showAlertWindow("@Model.ErrorMessage");
    }
});

当抛出错误时,这有一个非常好的演示 - 让我们的内部用户不会吓坏。我希望这能够帮到你。

于 2013-07-24T00:26:41.323 回答