相关疑难解决方法(0)

我在ASP.NET MVC 2中使用自定义模型绑定器,如下所示:

    public override object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
    {
        if (controllerContext == null)
        {
            throw new ArgumentNullException("controllerContext");
        }
        if (bindingContext == null)
        {
            throw new ArgumentNullException("bindingContext");
        }

        BaseContentObject obj = (BaseContentObject)base.BindModel(controllerContext, bindingContext);
        if(string.IsNullOrWhiteSpace(obj.Slug))
        {
            // creating new object
            obj.Created = obj.Modified = DateTime.Now;
            obj.ModifiedBy = obj.CreatedBy = controllerContext.HttpContext.User.Identity.Name;
            // slug is not provided thru UI, derivate it from Title; property setter removes chars that are not allowed
            obj.Slug = obj.Title;
            ModelStateDictionary modelStateDictionary = bindingContext.ModelState;
            modelStateDictionary.SetModelValue("Slug", new ValueProviderResult(obj.Slug, obj.Slug, …

我有一个实现的视图模型IValidatableObject包含一个字符串和另一个视图模型的集合,如下所示:

public sealed class MainViewModel
{
    public string Name { get; set; }
    public ICollection<OtherViewModel> Others { get; set; }
}

我的验证Others使用以下提供的合同检查每个对象与不同的规则IValidatableObject:

public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
    foreach (var other in this.Others)
    {
        // validate or yield return new ValidationResult
    }
}

由于真实的复杂结构,MainViewModel我不得不创建一个自定义模型绑定器,它重新构建模型并将POST数据分配给相关组件.我得到的问题是没有任何东西得到验证,导致上下文级别的验证错误,因为它违反了某些数据库约束,我不确定我做错了什么 - 我以为我ModelState.IsValid会Validate在我的视图上调用该方法模型,但它似乎没有那样下去.

我的模型绑定器看起来像这样:

public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
    int modelId = (int)controllerContext.RouteData.Values["id"];

    // query the database and re-build the components of the view …