没有为Json请求执行ModelBinder

时间:2014-04-23 18:32:03

标签: c# json asp.net-mvc-4

这是我的模型装订器

public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
    var value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
    if (value == null || value.AttemptedValue == "null" || value.AttemptedValue == string.Empty)
    {
        return null;
    }

    var rawDateTimeValue = (DateTime)value.ConvertTo(typeof(DateTime));
    if (!rawDateTimeValue.Equals(rawDateTimeValue.ToMinTime()))
    {
        return TimeZoneManager.GetUtcTime(rawDateTimeValue);
    }

    return rawDateTimeValue;
}

以下是我在Global.asax

中注册的方法
ModelBinders.Binders[typeof(DateTime)] = new DateTimeModelBinder();

这是我的TestModel类的样子

public class TestModel
{

    [JsonProperty(ItemConverterType = typeof(JavaScriptDateTimeConverter))]
    public DateTime LastModified { get; set; }


    [JsonProperty(ItemConverterType = typeof(JavaScriptDateTimeConverter))]
    public DateTime? LastModifiedNullable { get; set; }


    [JsonProperty(ItemConverterType = typeof(JavaScriptDateTimeConverter))]
    public string TheStrinDateTime { get; set; }
}

当我导航到我的Controller / Action MyTest时,我可以调用我的ModelBinder类。以下作品

public ActionResult MyTest()
{
    var model = new TestModel {LastModified = DateTime.UtcNow, LastModifiedNullable = DateTime.UtcNow};
    return View("MyTest1", model);
}

但是当我导航到我的Controller / Action for Json请求时,我的ModelBinder类代码没有被调用。最终,我希望能够将我的Json请求日期转换为UTC日期时间。

public ActionResult MyTestJsonB()
{
    var myTestModel = new TestModel
        {
            LastModified = DateTime.UtcNow,
            LastModifiedNullable = DateTime.UtcNow,
            TheStrinDateTime = "hello"
        };

    return Json(myTestModel, "text/plain", JsonRequestBehavior.AllowGet);
}

问题:当我调用请求MyTestJsonB时,如何调用ModelBinder类。它完全绕过它。

1 个答案:

答案 0 :(得分:1)

首先,我认为您应该像custom Binder

那样注册ModelBinders.Binders.Add(typeof(DateTime), new DateTimeModelBinder());

而不是ModelBinders.Binders[typeof(DateTime)] = new DateTimeModelBinder();