AJAX move functionality not available in Weekly Format when viewing a single section (see screenshot)

Notice the differnece between the top section and the single week section.

This is also the case in topics course format on 1.8+ but with one caveat... The Ajax controls are missing if you view any section in single mode (as pictured in the ss) EXCEPT section one... Everything works fine so long as you view section one.

I don't know if that will help – or not

Neil

Somewhat related to this issue is that after a while AJAX capabilities are not available. Is there a limit to the number of AJAX enabled objects? It seems after a while the AJAX move button is no longer available. (this is within the weekly view)

Version 1.8.2+ 2007021520 cannot move weeks or topics. Move buttons appear then disappear when page finishes loading. Anyone working on this because it seems fairly important.

Deleting the exercise module fixed this for an upgraded test installation, but still not working on our production installation.

The problem is in lib/ajax/ajaxcourse.js . I have a patch available at: http://repo.or.cz/w/moodle-blog-course-format.git?a=commitdiff;h=70b9fa0b37952e61c55c923e3fbe82ea7657263b;hp=d964566ed00b6612344585110b6edab692fdc4cb

I've tested this fix in the topics format, using FF. The problem was in the logic of js, so it shouldn't be dependent on browser.

Hi Jose,

I applied the patch & tested - in my case it doesn't resolve the issue for the "single section" mode nor the "all sections" mode. In the "all-sections" mode, (I'll upload a screenshot), only my quiz' at the very end of the course have ajax icons; interestingly enough, in single mode for that section, the same quiz links do not have ajax. Everything else, in both single/all-sections mode do not have ajax. I'll upload the 2 screenshots.

ajax only enabled in last section of course, and only if not in single-section mode (I have applied the patch from comments in this tracker item); before the patch nothing was ajax, I believe...

patch applied, no ajax, single section mode

Hi Leo,

Sorry for the lag in response. I completely missed the email notifying me of the new comment. I cannot replicate this issue. Could you send me a backup of a course that is having this problem? That should help me try to reproduce the problem. Also, what web browser are you using? If it's internet explorer which version are you using?

Thanks,
Jose

Hi Jose,

I tested in FF3.5 on osx, and in IE7or8 (can't remember) in XP-SP3 (virtual machine) - I really tried getting it working as it would really speed up a bunch of repetitive tasks on our end. I can't supply a course backup (clients site), but I could probably get away with doing a screencast type video of the problem on various browsers & send it to your email... would that work? I'm swamped at the moment, but perhaps later next week... let me know if that would work.

Regards,

• Leo

Hi Leo,

Does this problem happen to you when you create a brand new course? Are you using the weekly or weekly css course format? Does the problem happen when you are using the demo.moodle.org site? Does the ajax functionality work for you in test.moodle.org/timeline? What modules or plugins do you have enabled in your site? Do you get a javascript error? Have you tried enabling ajax debug? A screencast wouldn't be helpful because watching the error is not helpful, if I cannot reproduce it. Next week or whenever you have time is good.

Cheers,
Jose

I think I found a probably pattern. All the topics that revert to non-AJAX in my case have a non-empty topic label. As soon as I I blanked the content of the topic label and use a separate label in the topic, the AJAX controls came back. This means the problem may have something to do with the logic of processing the topics as Javascript on the client side.

I found another probable pattern. At least in my case, every topic label that has <ul></ul> renders the topic AJAX disabled. As soon as I removed the <ul> tags, AJAX was back. I suspect some HTML tags are not processed properly in the code that enables AJAX control.

The problem is in lib/ajax/section_classes.js, which scans for 'ul' tags to process. The topic label is outside the 'ul' of the entire topic, that's why any <ul> tag in the topic label breaks the code to add AJAX control for that topic. One possible solution is to put the topic label inside the topic <ul> tag.

This seemed to fix the problem:

in lib/ajax/section_classes.js, find the line that says:

this.resources_ul = this.content_td.getElementsByTagName('ul')[0];

comment it out, replace it with the following:

this.resources_ul = this.content_td.getElementsByClassName('section img-text')[0];

All the topic-level <ul> tags are of the class "section img-text".

Tak - I think you've got it - at first glance it appears to resolve part of my issue as well, namely when viewing the entire course ajax is enabled... you rock!

Jose - I haven't had a chance yet to look at this some more yet - the single section ajax still doesn't work for me with the above fix.

• Regards.

You're welcome, Leo! However, I cannot reproduce the symptom of not having AJAX control in single section mode. Did you enable that mode using the "show only ..." icon?

I created a patch to fix the issue(20091027sectioncontent_ajax.patch). Please give it a try and let me know if more issue occur.

thanks

Tak: sorry - missed your question to me, just noticed it today - I'll try Rassiani's patch right now & see if it works on my problem site...

Rosie, can you put this in 1.9 and HEAD please?

Commited to 1.9 and HEAD.

I updated our installation with the new lib/ajax/ajaxcourse.js and lib/ajax/ajaxlib.php and now items no longer delete in the course. Once you delete something it disappears, but when you turn editing off the item appears again.

Ryan - Thanks for your feedback and help with testing. I realize this may seem a bit silly, but I had a couple of questions. First, did you upgrade completely to the latest version of Moodle or did you just make the suggested changes related to this issue. I would actually encourage testing with the latest version of Moodle. Secondly, if this patch is in fact causing another issue let's go ahead and create a separate issue in the tracker for that as it allows us to keep each tracker issue focused. Peace - Anthony

I updated from MOODLE19_STABLE this morning. (I update every morning) It fetched 3 new files:

version.php
lib/ajax/ajaxcourse.js
lib/ajax/ajaxlib.php

I found that deleting was now broken, so I checked:

http://cvs.moodle.org/moodle/lib/ajax/ajaxcourse.js?view=log

and it listed that a new version of the file, relating to this bug, was committed recently, so I posted this comment.

Ryan - Thanks for clarifying about your upgrade, I wanted to make sure your had the latest version and not simply applied the patch to an earlier version. I tested the latest version as well and while I now I have the ability to move things around I can confirm the behavior you describe. I think we may be able to mark this issue as resolved and continue to comment and work on resolving the behavior you are reporting about deleting on MDL-10221 which seems to be a bit elusive. Thanks again for your help with testing. Peace - Anthony

I tested the latest patch with moodle 1.9.5 on 2 separate servers - ajax mostly worked, but not on this particular course; it stopped after the 1st block (see pic).

Leo - I couldn't re-create the issue. Could you try to update your moodle version to 1.9.6.

Thank you.

Hi Rossiani, I'm looking into getting the site upgraded as soon as 1.9.7 comes out - I'll check again after that to see if the problem is resolved on the site in question.