使用IValidatableObject验证上载的文件

时间:2012-08-01 15:17:34

标签: image validation model upload ivalidatableobject


大家好!

我在模型验证方面有点像菜鸟,我一直在尝试使用IValidatableObject接口验证Articles对象和上传的文件,但没有成功。

下面的类验证了Articles对象,但是我无法看到如何注入HttpPostedFileBase以允许我对其进行验证。这甚至可以使用这种方法吗?

我用来提交数据的表单包括enctype = multipart / form-data属性,因此它知道它的发布文件。

这是我试图验证的全班。这真的让我陷入困境,任何帮助将非常感激。

public class ArticlesModel : IValidatableObject
{
    public Article Article { get; set; }
    public IEnumerable<Category> Categories { get; set; }
    public HttpPostedFileBase PostedFile { get; set; }

    public ArticlesModel(){}

    public ArticlesModel(Article article, IEnumerable<Category> categories)
    {
        this.Article = article;
        this.Categories = categories;
    }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        if (Article.CategoryID == 0)
        {
            yield return new ValidationResult("Please select a category.", new[] { "Article.Category"});
        }

        if (Article.Title == null)
        {
            yield return new ValidationResult("Please enter a title.", new[] { "Article.Title" });
        }

        if (Article.Content == null)
        {
            yield return new ValidationResult("Please enter some content.", new[] { "Article.Content" });
        }


        if (PostedFile == null)
        {
            yield return new ValidationResult("Please upload a file.", new[] { "Article.ImageFile" });
        }
        else
        {
            if (PostedFile.ContentLength > 1 * 1024 * 1024)
            {
                yield return new ValidationResult("Please upload a file 1Mb or less.", new[] { "Article.ImageFile" });
            }

            //Other file checking logic here please!!
        }
    }
}

0 个答案:

没有答案