Upload control with initially Files in a grid with popup editing.

[Eros]

Hi,
I'm using a Grid popup editing with custom editor I'd like to use upload control with initially files loaded from a path that depends by the Id field (taskID) of the ViewModel (TaskViewModel).
Here it is the code I'm using:

   @(Html.Kendo().Grid<Telerik_Tecnim.Models.TaskViewModel>()
                    .Name("Grid")
            .Columns(columns =>
            {
                columns.Bound(o => o.taskID);
                columns.Bound(o => o.Cont);          
  ....
            })
            .DataSource(dataSource => dataSource
                .Ajax()
                .PageSize(10)
                .Model(model =>
                {
                    model.Id(o => o.taskID);
                    model.Field(o => o.taskID).Editable(false);
   ....
                  
                })
                                .Create(update => update.Action("Task_Create", "Task", new { id = "#=ticketID#" }))
                                .Read(read => read.Action("Task_Read", "Task", new { ticketID = "#=ticketID#" }))
                                .Update(update => update.Action("Task_Update", "Task"))
                                .Destroy(update => update.Action("Task_Destroy", "Task"))               
            )
            .Pageable()
            .ToolBar(toolbar => toolbar.Create())
            .Editable(editable => editable.Mode(GridEditMode.PopUp).TemplateName("Task")))
            .Sortable()
            .ToClientTemplate()The editor template, task.cshtml, is:@model Telerik_Tecnim.Models.TaskViewModel
...
<div>
    @(Html.Kendo().Upload()
              .Name("files")
              .Async(a => a
                  .Save("SaveAndPersist", "Upload", new { id = "#=taskID#" })
                  .Remove("RemoveAndPersist", "Upload", new { id = "#=taskID#" })
                  .AutoUpload(true)           
              )
                      .Files(files =>
                      {
                          foreach (var f in Model.UploadFiles)
                          {
                              files.Add().Name(f.Name).Extension(f.Extension).Size(f.Size);
                          }
                      })
    )
</div>

TaskViewModel is:
...
namespace Telerik_Tecnim.Models
{
    public int taskID { get; set; }
 ....
    public class TaskViewModel
    {
        .....
        public IList<Telerik_Tecnim.Models.UploadFileViewModel> UploadFiles
        {            get
            {                return SessionUploadInitialFilesRepository.GetAllInitialFiles(this.taskID);
            }            set
            {            }        }
    }
}

Unfortunately Model.UploadFiles in editor template seems to be empty (any file is show in uplaod control) but if I check the data with Fiddler UploadFiles is not empty!
How to use upload with initially files in editor template from a variable path depended by a field of the model?
Thanks in advance

[Daniel]

Hello,

The UploadFiles property in the editor will be empty because the grid is configured for Ajax binding. In this case the data is loaded on the client via Ajax and is not available on the server when the template is being rendered. The simplest option that I can suggest for this case is to use the grid edit event to initialize the upload and set the initial files from the grid model. I attached the upload in popup code-library modified to demonstrate this scenario.

Regards,
Daniel
Telerik

 

 

[Eros]

Thank you very much Daniel!
Now I'll try to apply your suggestion but I don't understand why if I set a fixed taskID (i.e. 4363) instead of this.taskID in taskViewModel like so:
...
namespace Telerik_Tecnim.Models
{
    public int taskID { get; set; }
 ....
    public class TaskViewModel
    {
        .....
        public IList<Telerik_Tecnim.Models.UploadFileViewModel> UploadFiles
        {            get
            {                return SessionUploadInitialFilesRepository.GetAllInitialFiles(4363);
            }            set
            {            }        }
    }
}

all works well !!!
Do you have any ideas?

[Daniel]

Hello again,

Because the UploadFiles method will always return a result in this case no matter if the Model has any values set or not. The Grid will still pass a model instance when using Ajax binding. The difference is that the Model will have the default values set.

Regards,
Daniel
Telerik