[Seaside] Strange error with Comet and Seaside 2.9-a3

[Lukas Renggli]

> Do you mean that I should force a full page refresh on all the clients
>  when the server updates data? I see this error on the same session
> that caused the data to change.

Not necessarily a full refresh. Just tigger a script that fetches the
appropriate update.

With the given information I cannot reproduce the exact problem. If
you could post a ready to run example I am sure somebody could help.

Lukas

>
> Thanks.
>
> On Wed, Apr 22, 2009 at 02:56, Lukas Renggli <renggli at gmail.com> wrote:
>> I cannot quite follow the real cause of the problem, but there is
>> definitely an issue here. You push out some JQuery code that contains
>> callbacks, these callbacks however refer to the session that created
>> the event.
>>
>> This is a general problem of Comet and could probably be solved by
>> generating different scripts for the different sessions, however there
>> is no mechanism right now that helps you with that. The way I used it
>> was to simply send a method call to the client to trigger a refresh.
>>
>> Lukas
>>
>> On Wed, Apr 22, 2009 at 4:47 AM, John Toohey <jt at parspro.com> wrote:
>>> I have a render method for a table like so :-
>>>
>>> renderUser: aUser asRowOn: html
>>>        |id|
>>>
>>>        id := 'bm-', aUser id asString.
>>>
>>>        html tableRow id: id; with:
>>>                [html
>>>                        tableData: [html anchor class: #underline;
>>>                                                        onClick:((html jQuery: #ebmd) load html: [:r | r render: (self
>>> editUserComponent: atUser id)]);
>>>                                                        with: aUser userName];
>>>                        tableData: aUser role;
>>> .
>>> .
>>> .
>>>
>>> The onClick script calls a JQuery Dialog that pops up, and when I
>>> click on Save, I fire an Announcement, that is registered in the same
>>> component. The Announcement methods is like this :-
>>>
>>> addUser: aUser
>>>        self pusher javascript: [ :script |
>>>                script << (script jQuery: #usertable)
>>>                        append: [:html | self renderUser: atUser asRowOn: html]
>>>                ]
>>>
>>>
>>> When the #renderUser is called from #addUser, and the tableData code
>>> is invoked, I get an error. This is a partial stacktrace :-
>>>
>>> UndefinedObject(Object)>>doesNotUnderstand: #withoutParameters
>>>        Receiver: nil
>>>        Arguments and temporary variables:
>>>                aMessage:       withoutParameters
>>>                exception:      MessageNotUnderstood: UndefinedObject>>withoutParameters
>>>                resumeValue:    nil
>>>        Receiver''s instance variables:
>>> nil
>>>
>>> JQLoad(JQAjax)>>enableCallbacks
>>>        Receiver: $("#ebmd").load("/","")
>>>        Arguments and temporary variables:
>>>
>>>        Receiver''s instance variables:
>>>                owner:  $("#ebmd")
>>>                options:        a WASmallDictionary
>>>                callback:       nil
>>>                callbackId:     nil
>>>                selector:       nil
>>>
>>> JQLoad(JQAjax)>>callback:
>>>        Receiver: $("#ebmd").load("/","")
>>>        Arguments and temporary variables:
>>>                aBlock:         [] in JQLoad(JQAjax)>>html: {[context := self
>>> requestContext.  context ...etc...
>>>        Receiver''s instance variables:
>>>                owner:  $("#ebmd")
>>>                options:        a WASmallDictionary
>>>                callback:       nil
>>>                callbackId:     nil
>>>                selector:       nil
>>>
>>> JQLoad(JQAjax)>>html:
>>>        Receiver: $("#ebmd").load("/","")
>>>        Arguments and temporary variables:
>>>                aBlock:         [] in BookmakerRootComponent>>renderUser:asRowOn: {[:r | r
>>>  rende...etc...
>>>                context:        nil
>>>        Receiver''s instance variables:
>>>                owner:  $("#ebmd")
>>>                options:        a WASmallDictionary
>>>                callback:       nil
>>>                callbackId:     nil
>>>                selector:       nil
>>>
>>>
>>> If I comment out the tableData line, everything works fine. If I leave
>>> in the tableData line, and comment out the Comet push script code,
>>> everything is fine. Both pieces of code enabled, generates the error.
>>>
>>> Any help, most appreciated.
>>> --
>>> -JT
>>> _______________________________________________
>>> seaside mailing list
>>> seaside at lists.squeakfoundation.org
>>> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
>>>
>>
>>
>>
>> --
>> Lukas Renggli
>> http://www.lukas-renggli.ch
>> _______________________________________________
>> seaside mailing list
>> seaside at lists.squeakfoundation.org
>> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
>>
>
>
>
> --
> -JT
> _______________________________________________
> seaside mailing list
> seaside at lists.squeakfoundation.org
> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
>



-- 
Lukas Renggli
http://www.lukas-renggli.ch