I use an image link for displaying a weather meteogram, and would like it to refresh every 30 minutes or so. I suggest that this is added as an option to the web widget.
Great idea. Will be added in one the upcoming released.
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Great, thanks! Just as a tip, here is the weather service I use. Gives a great overview, although it takes some space.
Is that HTML page or just an image?
Just an image, but I suppose supporting a HTML page would be useful as well. By the way, I included the same image in HADashboard, and have issues with refreshing there due to browser caching. I guess you have more control over caching in a dedicated app, so it might be possible to disable caching there.
Auto-refresh added for the next release.
By the way, that weather image refresh really depends on server response, because if server responds 304 Not Modified, then widget would not be reloaded. My tests show that the same weather image does reload when it is changed.
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I finally made it work in HADashboard by using a camera entity in HA (as proxy). Guess the same solution would work here.