Admin Keepalive Timer [Support Thread]

So why is it that completely removing the keepalive timer module, i still get that warning appearing, just in a different style popup.
And yes, i removed all the files from the module.
Is there a function built into zen cart that is doing this check, and where can i find it.

strelitzia:

And yes, i removed all the files from the module.I think you're mistaken.
strelitzia:

Is there a function built into zen cart that is doing this check, and where can i find it.No. That text exists only in the files in that plugin. You can confirm for yourself using the Developers Toolkit.

DrByte, I think the plugin is working ok , except that after installing the plugin I'm having a blank pages on admin page after making any change on the admin panel and then when I click on submit/save I get the blank page ! why is that ? I'm using zc V1.5.1 on Firfox 26.0 !

And Now I can't login to my admin page, Once I get to the admin logins page and click on login, I get a blank page ! I check the logs , I got this error and I do't know what to do now ! Should I remove the plugins now?
**
[15-Dec-2013 05:43:10] PHP Warning: Cannot modify header information - headers already sent by (output started at /home1/arabbro1/public_html/newadmin/includes/keepalive_module.php:34) in /home1/arabbro1/public_html/newadmin/keepalive.php on line 12
**

DrByte.. are you on a Holiday ? I've been waiting for your reply, but you didn't show up !! Please help ..

Guys, I'm having a blank page after the time-out on the admin panel, the log file is pointing to this line in the admin/keepalive.php on line 12
Which is: ** header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");**
and the whole log's info is:

** PHP Warning: Cannot modify header information - headers already sent by (output started at /home1/public_html/newadmin/includes/keepalive_module.php:34) in /home1/public_html/newadmin/keepalive.php on line 12**

Is that happening because I changed the time format from the US ( M,D,Y) to GB ( D,M,Y)? and how to fix the problem with the blank page ?:frusty:

I'm getting the 'We are unable to connect to the server. Your work may be lost. Please review your work and perhaps copy information to your clipboard if you had any work in progress which you do not wish to lose.' pop-up. I understand the message, but what might be the cause to look to fix?

Using this on Zen 1.5.1.

Whether it is the code, the installation (including uninstallation) instructions, or both, it simply does not work with xampp localhost.

With xampp this mod is defective and could prevent further development of your site, as others above have testified.

Thanks for nothing but a headache.

After installing this plug-in, by renaming the admin directory and then uploading the file structure, when I log in to admin I just get a blank screen, so unistalled.

So I have been getting weird issues on one of my sites that uses the keepalive module. What happens is that after I login or update anything, it immediately takes me to a blank page. I am still logged in to the site, but it appears that the admin will not return me to the page I was editing before. The debug message is as other posters have mentioned:

I am also getting the following debug message PHP Warning: Cannot modify header information - headers already sent by (output started at /home/content/whatever/xxxxxxx/adminsection/includes/keepalive_module.php:34) in /home/content/whatever/functions/general.php on line 21

When I removed all the module's files the issue went away.

fabburl:

So I have been getting weird issues on one of my sites that uses the keepalive module. What happens is that after I login or update anything, it immediately takes me to a blank page. I am still logged in to the site, but it appears that the admin will not return me to the page I was editing before. The debug message is as other posters have mentioned:

I am also getting the following debug message PHP Warning: Cannot modify header information - headers already sent by (output started at /home/content/whatever/xxxxxxx/adminsection/includes/keepalive_module.php:34) in /home/content/whatever/functions/general.php on line 21
Can't seem to replicate this on my own site.

What's different in your admin files compared to a fresh brand new uncustomized install of ZC?

Adding the following code:

if(!in_array('header.php', array_map('basename', get_included_files())))
	return;

to the very beginning of YOUR_ADMIN/includes/keepalive_module.php should do the trick.

iRAY:

Adding the following code:

if(!in_array('header.php', array_map('basename', get_included_files())))
return;

> 
> to the very beginning of YOUR_ADMIN/includes/keepalive_module.php should do the trick.
Um ... since header.php is the ONLY file which calls keepalive_module.php, why would that code suggestion have any helpful effect?

Hi I'm new to Zen cart and i think I'm doing pretty well, i normally dont like addons since they tend to slow down or get way too much crowded in my opinion, i like it clean simple and fresh, but i was looking for a anti log-out for admin page, i found yours, which by the way is great, tho i would prefer it not to force navigate to the site when the time runs out, since it can be frustrating working with other online documents and suddenly it moves away from that ;)

I Came here to say that i also got issues with blank pages, when logging in to admin page after i installed this addon, also when duplication products in same groups, it would give me the blank pages, however the cmd was sent successful to the server to demand duplicate but given blank pages all the time.

I'm using Firefox 28 if that helps you in anyways and I'm using the latest version of Zen Cart 1.5.1 as of this date 11-04-2014/eu date format with the theme "black pure free"

DrByte:

Um ... since header.php is the ONLY file which calls keepalive_module.php, why would that code suggestion have any helpful effect?

Could you reply to my reply ;)?

If you're getting blank pages, you'll need to sort out whatever PHP errors are happening as a result. See your /logs/ folder.

http://www.zen-cart.com/content.php?124-blank-page

Is there any way to adapt this to work for the main site? I am looking to display the same idle warning to logged in customers. I have tried and failed..... any help would be great :o)

Running zc 1.5.3

alhakeem2001:

Guys, I'm having a blank page after the time-out on the admin panel, the log file is pointing to this line in the admin/keepalive.php on line 12
Which is: ** header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");**
and the whole log's info is:

** PHP Warning: Cannot modify header information - headers already sent by (output started at /home1/public_html/newadmin/includes/keepalive_module.php:34) in /home1/public_html/newadmin/keepalive.php on line 12**

Is that happening because I changed the time format from the US ( M,D,Y) to GB ( D,M,Y)? and how to fix the problem with the blank page ?:frusty:

DrByte:

Can't seem to replicate this on my own site.

What's different in your admin files compared to a fresh brand new uncustomized install of ZC?
The issue is with the November 2013 (v1.0) update, where an initialization script was added to load the keepalive_module.php. Since that module outputs a <div>, that's where the error originates. Using the previous (beta0.3) version corrects the issue (albeit with a single-line modification to the admin's /includes/header.php).

Just remember, don't use this plugin for Zen Cart v1.5.2 and later ... it's already included!

lat9:

Just remember, don't use this plugin for Zen Cart v1.5.2 and later ... it's already included!

I installed 1.5.3 from scratch and still lose my work without warning when I am editing a page as follows

1. Tools
2. Define Pages Editor
3. Wait 15 minutes or more
4. Save
5. ... I am asked to log in again and my changes are gone.

Am I going about things in the wring way?

Thanks in advance.

lat9:

Just remember, don't use this plugin for Zen Cart v1.5.2 and later ... it's already included!
My bad, for parroting the statement made by the last module updater instead of verifying before "speaking" -- you'll need to install this plugin (the previous version uploaded by DrByte) for this function to be present in all current Zen Cart installations.