Create getting called before update if create called first

[Chris]

     I have a grid that is defined as such:

@(Html.Kendo().Grid<JohnstonePortal.Data.Entities.Announcement>()
                    .ToolBar(tools =>
                    {
                        tools.Create();
                    })
                   .Name("grdAnnouncements")
                   .AutoBind(true)
                   .Events(x=> x.Edit("onEdit"))
                    .ToolBar(tools =>
                    {
                        tools.Search();
                    })
                   .Columns(columns =>
                   {
                       columns.Bound(c => c.Text).Width(500).Title("Announcements");
                       columns.Command(command =>
                       {
                           command.Edit();
                           command.Destroy();
                       }).Width(250);
                   })
                 .Editable(editable => editable.Mode(GridEditMode.PopUp).TemplateName("_EditAnnouncement"))
                .DataSource(dataSource => dataSource
                .Ajax()
                .Model(model=>
                {
                model.Id(ann => ann.Id);
                })
                .Read(read => read.Action("AnnouncementsRead", "Announcements"))
                .Create(create => create.Action("AddAnnouncement", "Announcements"))
                .Update(update => update.Action("UpdateAnnouncement", "Announcements"))
                .Destroy(destroy => destroy.Action("DeleteAnnouncement", "Announcements"))
                ))

 

and the controller is defined as:

public IActionResult AddAnnouncement([DataSourceRequest]DataSourceRequest request, Announcement announcement)
     {
         if (ModelState.IsValid)
         {
             _db.Add<Announcement>
                 (new Announcement
                 {
                     DateCreated= DateTime.Now,
                     Text = announcement.Text
                 });
             _db.SaveChanges();
         }

         // Return a collection which contains only the newly created item and any validation errors.
         return Json(new[] { announcement }.ToDataSourceResult(request, ModelState));
     }

     public IActionResult UpdateAnnouncement([DataSourceRequest]DataSourceRequest request, Announcement announcement)
     {
         if (ModelState.IsValid)
         {
             var editAnnouncement = _db.Announcements.Single(x => x.Id == announcement.Id);
             editAnnouncement.Text = announcement.Text;
             _db.SaveChanges();
         }

         // Return a collection which contains only the updated item and any validation errors.
         return Json(new[] { announcement }.ToDataSourceResult(request, ModelState));
     }

 

The odd thing is, if I update a row when the page loads, it behaves as normal but if I create one and then update another one, It calls the add endpoint first with the original model that was passed the first time to it and then calls the update on the new model that was intended. This obviously results in a duplicate of the first item that was created. I am not sure what I am doing incorrectly here.

[Tsvetomir]

Hi Chris,

I have investigated the provided code snippets and I have noticed that the Id of the firstly created item has not been modified. Therefore, the second time the grid updates the item, it detects that there is another item which has an Id equal to 0 and triggers the Create action for it.

Can you try assigning the Id value returned from the database to the item and see if the issue is still present?

 

Kind regards,
Tsvetomir
Progress Telerik