[Solved] Fields being removed from Json response

[Herbert]

Hello,

I currently have a grid with a controller action set on the Update Ajax databinding.

The following is a code snippet of the controller action:

[GridAction(EnableCustomBinding = true)]
public ActionResult UpdateData(GridCommand command)
{
     //logic here
     return Json(new { Data = data, Total = total, Errors = errors });
}

"errors" is a string array that we populate. The errors are later parsed to show up in our view.
However I've noticed that when the GridAction tag is set, only Data and Total are returned in the response. I'm aware that due to using GridAction, the OnActionExecuted will ignore all but a few fields such as Data and Total. Is there a solution to this that preferably does not modify Telerik source code?

Thanks

[Daniel]

Hello Herbert,

You could add the error messages as model state errors and they will be automatically serialized 
by the GridAction attribute and added to the response.

[GridAction(EnableCustomBinding = true)]
public ActionResult UpdateData(GridCommand command)
{
     .....
     ModelState.AddModelError("myErrorKey", "my error message");
     return Json(new { Data = data, Total = total});
}

Kind regards,
Daniel
the Telerik team

[Kuangyi]

Hello,

The provided solution seems not to work. Even if I add error to the model state, response still doesn't have the error message in the provided scenario, and it only has data and total.

[Daniel]

Hello,

Sorry, indeed there is an problem with the provided snippet. A ViewResult with the GridModel should be returned from the action so that the GridActionAttribute can access the errors e.g.

[GridAction(EnableCustomBinding = true)]
public ActionResult UpdateData(GridCommand command)
{
     .....
     ModelState.AddModelError("myErrorKey", "my error message");
     return View(new GridModel{ Data = data, Total = total});
}

Regards,
Daniel
the Telerik team