Force reload?

[Thomas]

Hi
Is it possible somehow to force a client to reload the visualisation page(s) after I make a change?

Thank you

[Erwin van der Zwart]

Hi,

Yes that is possible by custom javascript.

You need a event listener on a KNX object and a function to reload the client ( location.reload(); )

There is just 1 but... The client has to load the custom javascript first, so you have to reload them once after adding this, from then you can always force a client reload with your KNX object.

Can you do this or do i need to create a sample? (done this already on project so i must have it already somewhere)

BR,

Erwin

[Thomas]

May you please provide me a sample?

Thank you

[Erwin van der Zwart]

Hi Thomas,

Try this as custom JavaScript:

Code:

$(function(){
 if (typeof grp != 'undefined') {
   grp.listen('1/1/1', function(object, state) {
     var value = object.value;
     if (state == 'value') {
       if (value == 1) {
         location.reload();
         grp.update('1/1/1', false);
       }
     }
   }, true);
 }
});

When writing value true to '1/1/1' (bit object) the client will reply with value false to confirm that the location.reload()  has been triggered.

BR,

Erwin

[Thomas]

Perfect. It works like a charm on both visualisations.
Thank you

[Thomas]

Hi
I've found a problem. This script crashes LM. In my case everytime. I don't know if it depends on number of clients or size of the visu. Would it be possible to add some random delay for better load balancing?
Thank you

[Erwin van der Zwart]

Hi,

This function runs client side and does nothing special other then refreshing the browser, same as pressing F5. When you press F5 on the client, do you see same issue? Are there errors in the browser console?

BR,

Erwin

[admin]

How many active clients do you have?

[Erwin van der Zwart]

Hi,

If you have a lot of clients you could add a random delay to divide all request to the controller at once by using this:

Code:

$(function(){
if (typeof grp != 'undefined') {
  grp.listen('1/1/1', function(object, state) {
    var value = object.value;
    if (state == 'value') {
      if (value == 1) {
        var x = Math.floor((Math.random() * 10000) + 1);
        setTimeout(function(){
           location.reload();
        }, x);
        grp.update('1/1/1', false);
      }
    }
  }, true);
}
});

BR,

Erwin