Hi Fabian Thanks for the clarification. I forgot about the properties. But what about the ImageLoader? The OP said he tried that as well. What are the caching mechanisms of the ImageLoader Class?
Best - Roman Fabian Jakobs wrote: > Roman Schmid schrieb: >> Hi Alessandro >> >> What you're experiencing is browser default behavior. You could either >> add a random number to your query (doesn't have to be a counter), or >> maybe modify your headers so that the image won't be cached. >> > Actually its the way qooxdoo handles properties. If you set the same > value to a property neither a change event is fired nor the apply method > is called. Because of that setting the same URL again has no effect. > > >> Try to add the following headers: >> ----- >> Cache-Control : "no-cache" >> Pragma : "no-cache" >> Expires : -1 >> ----- >> > This will not work for the reasons explained above. >> I think the safest method is the random number to create unique urls... >> and it is fairly simple to implement and use. >> > That's the way to got. Just use an URL like > "http://my.com/chart?nocache=123"; and increase the number on each request. > > Best Fabian >> Cheers - Roman >> >> >> turicum wrote: >> >>> Dear Qooxdooxers, >>> >>> I'm generating charts with a WSGI python-based server. The image is located >>> at fixed URL (eg, http://my.com/chart), which is mapped to a python >>> function. Qooxdoo loads it correctly the first time I invoke chart = new >>> qx.ui.basic.Image("http://my.com/chart";). So far so good. >>> >>> When I invoke chart.setSource("http://my.com/chart";) after new data (and a >>> new chart) are available, qooxdoo does not update the image. I tried >>> initSource(), applySource(), resetSource() as well as the imageLoader. The >>> only way I found to have the image updated is to add a counter and append a >>> query to the URL, with an increasing count number, for example: >>> http://my.com/chart?count=1 >>> >>> This makes me suspect that some caching is occurring somewhere. How can I >>> shut it down and have the chart updated whenever I need it? >>> >>> I attached a screenshot just to show how well matplotlib charts integrate in >>> qooxdoo. >>> >>> Thanks! >>> Alessandro >>> >>> http://www.nabble.com/file/p22280893/screenshot.png >>> >>> >> ------------------------------------------------------------------------------ >> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA >> -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise >> -Strategies to boost innovation and cut costs with open source participation >> -Receive a $600 discount off the registration fee with the source code: SFAD >> http://p.sf.net/sfu/XcvMzF8H >> _______________________________________________ >> qooxdoo-devel mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel >> >> >> > > ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ qooxdoo-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
