Responding to "mapped function not found on server"

[Andreas Joseph Krogh]

Hi all.

 

I'm facing an issue where several of our users are reporting that AJAX-clicks "don't do anything". It appears the users have put their computers to sleep (suspend-mode) and resumed again after aprox. 15 min. They are still logged in but all functions have been GC'd on the server so the AJAX-call returns empty.

 

Ideally I'd display some kind of message saying; "Page have timed-out, please reload the page", but how to I detect this state on the client?

 

Thanks.

 

--

Andreas Joseph Krogh

CTO / Partner - Visena AS

Mobile: +47 909 56 963

and...@visena.com

www.visena.com

[Matt Farmer]

Shouldn’t the AJAX ping for the page be realizing this is happening and trigger a reload? Or does that only happen if the whole session has expired? o.O

—
Matt Farmer | Blog | Twitter

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[Andreas Joseph Krogh]

På onsdag 18. februar 2015 kl. 14:17:31, skrev Matt Farmer <ma...@frmr.me>:

Shouldn’t the AJAX ping for the page be realizing this is happening and trigger a reload? Or does that only happen if the whole session has expired? o.O

 

AFAICS that only happens when the session has expired and we don't have a mechanism in place for handling this.

 

Do someone have a work-around not involving tuning the lifespan of functions to the lifespan of the session?

 

Shall I open an issue for this in master (3.0)?

 

--

Andreas Joseph Krogh

CTO / Partner - Visena AS

Mobile: +47 909 56 963

and...@visena.com

www.visena.com

 

[David Miguel Antunes]

I use this to reload the page if a function is unmapped:

LiftRules.handleUnmappedParameter.default.set(Vendor.apply((_, f) => {
  if (f.startsWith("F")) Reload
}))

Cheers,

David

 

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[Andreas Joseph Krogh]

På onsdag 18. februar 2015 kl. 14:42:31, skrev David Miguel Antunes <davidbr...@gmail.com>:

 

I use this to reload the page if a function is unmapped:

LiftRules.handleUnmappedParameter.default.set(Vendor.apply((_, f) => {
  if (f.startsWith("F")) Reload
}))

 

Are you sure you're using that exact code? It doesn't do anything..

 

If you wrap Reload in S.appendJs(Reload) it'll work.

[David Miguel Antunes]

Yep, I think you're right: the return of that is Unit:

It probably seemed to be working because I was also reloading when losing the comet session:

LiftRules.noCometSessionCmd.default.set(Vendor.apply(() => Reload))

so that should probably be the reload that was triggering.

Thanks for the fix : )

David

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