Bug 12410 - Remove useless use of cookies
Summary: Remove useless use of cookies
Status: NEW
Alias: None
Product: Koha
Classification: Unclassified
Component: Architecture, internals, and plumbing (show other bugs)
Version: Main
Hardware: All All
: P5 - low enhancement
Assignee: Bugs List
QA Contact: Testopia
URL:
Keywords:
Depends on: 9366 24625
Blocks:
  Show dependency treegraph
 
Reported: 2014-06-12 14:37 UTC by Jonathan Druart
Modified: 2022-10-27 22:48 UTC (History)
2 users (show)

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Description Jonathan Druart 2014-06-12 14:37:35 UTC
It seems that the 'show/hide marc tag field' enhancement, introduced by bug 9366, uses cookie when the HTML5 localStorage DB could be used.
Comment 1 Owen Leonard 2020-02-10 19:44:48 UTC
The only reason I can think of that we would want to change this is if we're concerned about the 365-day expiration of these cookies.

Is there another factor behind this bug?
Comment 2 Jonathan Druart 2020-02-11 12:14:32 UTC
Cookies are returned to the server, then back to the client.

I do not think we should use them when not needed, here it is only needed client-side, and can be replaced with local storage.

Also, privacy, useless data going through the network, etc.
Comment 3 Jonathan Druart 2020-08-07 12:33:35 UTC
Same for search_path_code
Comment 4 Marcel de Rooy 2022-10-27 05:48:04 UTC
(In reply to Jonathan Druart from comment #3)
> Same for search_path_code

Agreed. Seeing useless warnings like this one too:
[2022/10/27 00:49:23] [WARN] ReturnPath switch error at /usr/share/koha/opac/opac-search.pl line 215.
Caused by an unexpected value in search_path_code.
Comment 5 David Cook 2022-10-27 22:48:47 UTC
(In reply to Jonathan Druart from comment #2)
> Cookies are returned to the server, then back to the client.
> 
> I do not think we should use them when not needed, here it is only needed
> client-side, and can be replaced with local storage.
> 
> Also, privacy, useless data going through the network, etc.

I've been thinking about this lately, and the only issue I can think of relates to shared devices. 

In the case of the staff interface, you can have shared circ terminals, although it's probably not a drama.

I'm thinking more about public OPAC terminals at libraries. If a user closes the browser, I don't think the local storage gets cleared. HTML5 session storage might work although I think its scoping differs a fair bit from session cookies. 

I suppose it'll differ on a case by case basis...

Anyway, I think it would be interesting to take advantage of local storage and session storage more often for sure.