preHook initial problem?

[andle]

I have problem with preHook not working the first time the ajax request is called.
The showLoadText shows text in the current object (a listbox is in this case)
while the server is taking care of my request.
Do I have to set some initial stuff with dwr.engine.setPreeHook(...)
and dwr.engine.setPostHook(...)?

I have this in my jsp-page:
AjaxMethods.findByCountryId(countryId, {
          callback:function(data) { afterAjax(data)},
                preHook:showLoadText(obj, loadText),
                postHook:hideLoadText(obj),
                errorHandler:function(msg){ listBoxErrorHandler(obj)}
                });
        }

/Andreas

[Michael Benz]

Hi Andreas,
i believe you have an error in your js code. The preHook/postHook
arguments have to be functions just like the callback argument.
Otherwise your functions 'showLoadText' and 'hideLoadText' are evaluated
beforehand and the result set to preHook/postHook (which i assume is
undefined).

The code should look more like this:

AjaxMethods.findByCountryId(countryId, {
  callback:function(data) { afterAjax(data); },
  preHook:function(obj, loadText) { showLoadText(obj, loadText); }
  });
}

Michael


andle schrieb:

> I have problem with preHook not working the first time the ajax request is
> called.
> The showLoadText shows text in the current object (a listbox is in this
> case)
> while the server is taking care of my request.
> Do I have to set some initial stuff with dwr.engine.setPreeHook(...)
> and dwr.engine.setPostHook(...)?
>
> I have this in my jsp-page:
> AjaxMethods.findByCountryId(countryId, {
>   callback:function(data) { afterAjax(data)},
> preHook:showLoadText(obj, loadText),
> postHook:hideLoadText(obj),
> errorHandler:function(msg){ listBoxErrorHandler(obj)}
> });
> }
>
> /Andreas
>  

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[Michael Benz]

Oops, should have read:
preHook:function() { showLoadText(obj, loadText); }

since preHook is called with no args.

Cheers,
Michael


Michael Benz schrieb:

> Hi Andreas,
> i believe you have an error in your js code. The preHook/postHook
> arguments have to be functions just like the callback argument.
> Otherwise your functions 'showLoadText' and 'hideLoadText' are
> evaluated beforehand and the result set to preHook/postHook (which i
> assume is undefined).
>
> The code should look more like this:
>
> AjaxMethods.findByCountryId(countryId, {
>  callback:function(data) { afterAjax(data); },
>  preHook:function(obj, loadText) { showLoadText(obj, loadText); }
>  });
> }
>
> Michael
>
>
> andle schrieb:
>> I have problem with preHook not working the first time the ajax
>> request is
>> called.
>> The showLoadText shows text in the current object (a listbox is in this
>> case)
>> while the server is taking care of my request. Do I have to set some
>> initial stuff with dwr.engine.setPreeHook(...)
>> and dwr.engine.setPostHook(...)?
>>
>> I have this in my jsp-page:
>> AjaxMethods.findByCountryId(countryId, {
>>           callback:function(data) { afterAjax(data)},
>>         preHook:showLoadText(obj, loadText),
>>         postHook:hideLoadText(obj),
>>         errorHandler:function(msg){ listBoxErrorHandler(obj)}
>>         });
>>     }
>>
>> /Andreas
>>  
>
>
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> To unsubscribe, e-mail: users-unsubscribe@...
> For additional commands, e-mail: users-help@...
>
>

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