Additional input fields in AmazonS3 Direct Upload POST Form

Question

I added an additional "title" field to the POST field and created the "title" attribute in my model. After the video has been downloaded, the server is directed to another controller. This is done by setting the redirection field in the policy file. Now how can I access the header field in a redirected controller?

POST form:

<form action="@Model.FileUploadModel.FormAction" method="@Model.FileUploadModel.FormMethod" enctype="@Model.FileUploadModel.FormEnclosureType" >

                     <input type="hidden" name="key" value="@Model.FileUploadModel.FileId" /> 
                     <input type="hidden" name="AWSAccessKeyId" value="@Model.FileUploadModel.AWSAccessKey" /> 
                     <input type="hidden" name="acl" value="@Model.FileUploadModel.Acl" /> 
                     <input type="hidden" name="policy" value="@Model.FileUploadModel.Base64EncodedPolicy" /> 
                     <input type="hidden" name="signature" value="@Model.FileUploadModel.Signature" /> 
                     <input type="hidden" name="redirect" value="@Model.FileUploadModel.RedirectUrl" /> 
                     <div class="row">  
                            **<label for="Title" style="padding-right: 5px;">Title (optional) </label>
                            <input type="text" name="Title"  style="width: 200px;" />**
                     </div>
                     <div class="row_clear"></div>
                     <div class="row">
                             <input type="file" name="file" size="100" id="file"/> 
                     </div>
               </form>

and my FileUploadModel

    public FileUploadModel(string publicKey, string privateKey, string bucketName, string redirectUrl)
    {
        myPrivateKey = privateKey;

        FormAction = string.Format("https://{0}.s3.amazonaws.com/", bucketName);
        FormMethod = "post";
        FormEnclosureType = "multipart/form-data";
        Bucket = bucketName;
        FileId = "u5/i/" + Guid.NewGuid().ToString(); 
        AWSAccessKey = publicKey;
        Acl = "private"; 

      RedirectUrl = redirectUrl;
    }
    public string FormAction { get; private set; }
    public string FormMethod { get; private set; }
    public string FormEnclosureType { get; private set; } 
    public string Bucket { get; private set; }
    public string Acl { get; private set; }
    public string Policy { get; private set; }
    public string FileId { get; private set; }
    public string AWSAccessKey { get; private set; }
    public string RedirectUrl { get; private set; }
    [Display(Name = "Title (optional)")]
    public string Title { get; set; }
    [Display(Name = "File")]
    public HttpPostedFileBase File { get; set; }
    public int? Page { get; set; }
    public string SearchString { get; set; }

}

}

Here is the link I referenced to create the policy form.

Link

Answer 1

I worked on the problem by sending the title attribute via the URL.

In my RouteConfig file, I added a new route:

 routes.MapRoute(
                name: "Transcode",
                url: "{controller}/{action}/{title}/{id}",
                defaults: new
                {
                    controller = "Videos",
                    action = "Transcode",
                    id = UrlParameter.Optional
                }
            );

Transcode title. , , , URL- , : " http://dev.area.local/Videos/Transcode/title"