[Seaside] Showing progress

[Jupiter Jones]

Hi Joachim,

Thanks for your response. I’m pretty sure this is how I’ll need to deal with it. I’m deploying on GemStone so this approach requires a bit more work to implement well - I was hoping there was a poor-mans solution :)

Cheers,

J

> On 3 Mar 2017, at 3:33 pm, jtuchel at objektfabrik.de wrote:
> 
> Jupiter.
> 
> not a perfect answer, but what I'd try is forking the actual processing as a background process on the server and add two inst vars to the component:
> 
> * processingDone
> * currentProgressMessage
> 
> which would be updated by the background process as it progresses through its job.
> 
> The first ajax call would be finished right after forking the background process, so teh browser would get an instant answer. All you need to do then is set up a timeOut() and have the browser ask for the current progress by issueing ajax calls every, say, 750-1000msec, until the server responds with "processingDone=true".
> 
> The problem is, I have written something like this in Javascript, where I registered a callback for the progress message in renderContentOn: , but have no idea how to do it in Seaside's javascript rendering methods.
> 
> I hope this idea helps you get a step further.
> 
> Joachim
> 
> 
> 
> 
> Am 03.03.17 um 03:54 schrieb Jupiter Jones:
>> Hi all,
>> 
>> I have a relatively short process (about 5 to 10 seconds) that I would like to show the progress of.
>> 
>> It’s triggered by ajax:
>> 
>> html button
>>             bePush;
>>             onClick:
>>                 (html jQuery ajax script: [ :s | self fetchShowingProgressOnScript: s ]);
>> 
>> fetchShowingProgressOnScript: s
>> 
>>   s << (s jQuery id: ‘progress')
>>     html: [ :r | r paragraph: 'Connecting to Downer...' ].
>>   integration connect.
>>   s << (s jQuery id: ‘progress')
>>     html: [ :r | r paragraph: 'Logging In...' ].
>>   integration login.
>>   s << (s jQuery id: ‘progress')
>>     html: [ :r | r paragraph: 'Looking up ' , self idToFetch ].
>>   integration find: self idToFetch..
>>   s << (s jQuery id: ‘progress') html: [ :r | r paragraph: 'Done.' ].
>>   integration quit
>> 
>> However this won’t work because the script will not be returned to the browser until the method completes.
>> 
>> What’s the recommended way of going about this? Can you push a partial result without a streaming server?
>> 
>> Is there a way of doing this without some kind of polling loop and running the long operation in a separate thread?
>> 
>> Cheers,
>> 
>> Jupiter
>> _______________________________________________
>> seaside mailing list
>> seaside at lists.squeakfoundation.org
>> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
> 
> 
> -- 
> -----------------------------------------------------------------------
> Objektfabrik Joachim Tuchel          mailto:jtuchel at objektfabrik.de
> Fliederweg 1                         http://www.objektfabrik.de
> D-71640 Ludwigsburg                  http://joachimtuchel.wordpress.com
> Telefon: +49 7141 56 10 86 0         Fax: +49 7141 56 10 86 1
> 
> _______________________________________________
> seaside mailing list
> seaside at lists.squeakfoundation.org
> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside