RenderRegionAsync not allowed

[etwoss]

Hi

When a form is normally openend, its going through its create and then (by the caller) a method is called, and all works fine:

Code: Select all

 TIWFormDashboardManagerProfile(ShowForm(fDashboardManagerProfile.TIWFormDashboardManagerProfile)).LoadManager(UserID, Currency);


Now we also work with Handlers , a person gets a email with a link and the on the link we have servercontroller code do:

Code: Select all

 with THandlers.Add('/tokenizem/','', TContentForm.Create(TIWFormDashboardManagerProfile)) do
 begin
   CanStartSession := True;
   RequiresSessionStart := True;
 end;


In the create of the form i have a procedure DotokenLogin

Code: Select all

procedure TIWFormDashboardManagerProfile.DotokenLogin;
var
  Token: String;
  TokenPos: Integer;
begin
//  Token :=  WebApplication.RunParams.Text; //werkt niet meer na upgrade
  Token :=  WebApplication.Request.Query;
  TokenPos := Pos('Token=', Token);
  if (TokenPos > 0) then
  begin
    Token := Trim(Copy(Token, TokenPos + 6, 32));
    if (Length(Token) = 32) and  UserSession.IMSession.LoginWithToken(Token) then
    begin
      UserSession.IMSession.UserType := wutCostCentreManager;

      LoadManager(UserSession.IMSession.UserID, UserSession.IMSession.Currency);
      FrameChat.LoadUserTasks;

    end;
  end;
end;

The problem comes with the LoadManager method who wants to reload grids and ajaxrerender some comboxBox .
This is where i got the error "Method "RenderRegionAsync"its only allowed in AjaxProcessing"
When LoadManager method is called after the create , as done in normal processing of the form, all is ok


How to handle these kind of cases?

Eric

[Jorge Sousa]

Hi

The create of a form is already called in a full submit post, so there is no point to call ajax render methods, to perform ajax local updates.

Also you can check CGIsCallbackProcessing in unit IWCGJQCommon

[etwoss]

Hi

if i understand, in the formCreate or any method called in the formCreate it does not make sense to call Ajaxrerender or Grid.ReloadGrid , right?

Eric

[Jorge Sousa]

yep

[etwoss]

Hi

Ok, trying to understand this mechanism better

Look at the image, when the dropdown (Approval request of) value changes 3 grids needs to refresh, the upper one and one on both tabs.
As also the username in the middle. (lblUserName.Text := OrderRoutepoint.RequestorDesc;)

So now testing everywhere:

Code: Select all

  IsAjax := CGIsCallbackProcessing;

  fill grid

  if (not IsAjax) then
      GridVendorTerminals.JQGridOptions.ReloadGrid;



What is see ?

When the form is first created all goes well, the grids and username are all filled with the correct data.

Now i change the value of the combobox, in all my methods "CGIsCallbackProcessing" is true so no reload of the grids anymore, so the grids don't show the proper data, just the lblusername is changed.

I understand that probably the only part being refreshed by the chnage event is the dropdown itself. Setting of the lblusername.text value will also cause an update. But without the reload of the grids the grids will not.

So there is a difference between the situation when creating the form and when changing value of the dropdown.

In the first case grid reload is not necessary in the other its is.

How can i detect the difference between these two situation?


Eric

[Jorge Sousa]

Hi

You don't need to reload the grid if is not ajax

if (not IsAjax) then
GridVendorTerminals.JQGridOptions.ReloadGrid;

[etwoss]

Ok, but this means that even in a full submit the reload is called, right?
and if so , this is with a full submit not really necessary , right?

And if NOT isAjax it means Full Submit?

Eric

[Jorge Sousa]

Hi

Ok, but this means that even in a full submit the reload is called, right?

and if so , this is with a full submit not really necessary , right?

Correct, if JQGridOptions.DataType=gdtXML (default value)

And if NOT isAjax it means Full Submit?

Yes