reload tab

[David Caparrós]

How can I force to reload the dashboard view on the browser with un_control?

I'm displaying a picture on a template after some action but the picture is not refreshed unless I reload the dashboard tab from chrome and wanted to know how to force this directly from node red.

Thanks in advance

[Dave C-J]

Does the info not tell you....

oh yes it does

[David Caparrós]

Sorry Dave....

Thanks too

[David Caparrós]

Don't ask me why but on google Chrome is not working....

If I go to the explorer and click on refresh then the picture is reloading ok however If I use the ui_control and inject "" or no msg.payload or even if I make to go +1 and one second later -1 it's the same, picture does not refresh, seems page is not reloaded and keep what is on the cache.

Templete has just this:

<div height="210" style="height: 210px;">

<img src="/grab.jpg" width="280"><br/>

<a href="/grab.jpg" target="_blank">Full screen</a>

</div>

I don't know how to force it with code to auto refresh when I wanted.

Regards

[Dave C-J]

rather than try and reload the same thing - which indeed will cache... you need to inject a new image...

so put that code into a "normal" template and then use a default ui_template (expecting the msg.payload)...

change the /grab.jpg  to /grab.jpg?{{msg.payload}}  and inject a timestamp...

so you inject a timestamp - that gets added to the url in the first template - which then updates the dashboard template - and the timestamp acts as a cahce-buster and forces an image reload.  Set inject to repeat at whatever frequency you want... or arrange for a function to act as an inject based on an event.

[Torsten Schmale]

Sounds complicated Dave.

Sending "" to really enforce reload would be better, IMHO

regards

Torsten

[Colin Law]

I don't think there is a way to force the browser to reload an image that it already has, though I may be wrong.  The method outlined by Dave is the conventional way of achieving what you want on any website (node red based or otherwise).

Colin

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