Updating image collection with new images

Question

I have an image collection which works as a slideshow which can be paused/resumed. This works fine but my problem is that these images are going to change everyday but they will keep the same filename. Is there a way to get the collection to refresh itself
automatically or perhaps if there is a different way to do this rather than a collection? Something that grabs the image from file at run time rather than storing a copy locally which the collection seems to do.

Answer 1

Hi Daniel,
If I understand you correctly, the app you're building will display images that are new everyday, but keep the same name. If this is correct, then to be able to do this you will need to work with a REST based source such as RSS or Facebook, for example.
The reason is that since we always fetch from these sources, displaying the data returned, and therefore any changes you make such as a new image or name will be pulled into Siena when we go grab the data. This is different from a source
like Excel where we take a snapshot and use with Siena. As you have observed, this snapshot will only get updated when you manually refresh from the backstage.
To see an example of what it means to work with a REST source such as Facebook, please see our help topic, where we discuss
how to display photos from a Facebook Album. If you would like this to this to be supported with Excel, please consider contributing to
this thread where the community has been collecting such feedback.
Hope this helps, get you going.