Lectures have become unstable - need to fix!

plumi / criticalcommons.content

Critical commons extra content types

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Lectures have become unstable - need to fix! #5

Open Ironman28 opened 9 years ago

Ironman28 commented 9 years ago

If a new clip is added to an existing lecture, it makes all the clips in that lecture disappear. This has happened several times with Music for Econ (and I have since reconstructed it manually!): http://www.criticalcommons.org/Members/oroark/lectures/music-for-econ Also -- this one lost all its media -- clips simply disappeared one day: http://www.criticalcommons.org/Members/cmarez/lectures/lecture.2013-01-07.2328475602

ahelme commented 9 years ago

Hi Steve - that second link does not appear to be a properly saved lecture, judging by its strange URL. I might list that issue as a separate ticket. https://huboard.com/plumi/criticalcommons.content/#/milestones/issues/111129087

ahelme commented 9 years ago

Okay testing the original issue now. I just clicked edit on my test file (also with timestamp URL due to other issue):100: http://www.criticalcommons.org/Members/anna/lectures/lecture.2015-04-06.9796008193/edit?_authenticator=cedf11db95cbfd471bd21586e612e7f3661a7303

On this page, I see all my original clips linked in there.

I made no changes, and saved the lecture.

My lecture is perfectly fine. http://www.criticalcommons.org/Members/anna/lectures/lecture.2015-04-06.9796008193

Okay, so I will make a change, and see if that provokes the bug:

adding text to the Body produced no bug as per Steve's finding
editing the Title produced no bug as per Steve's finding
searching for clips with the term "cars" and then selecting some additional clips produced no bug as per Steve's finding

ahelme commented 9 years ago

I just searched for the original search term "cyborgs" again and added more clips - no error so far!

ahelme commented 9 years ago

Changing the thumbnail didn't cause a problem either!

ahelme commented 9 years ago

Hmmm. Steve, I can't reproduce the bug - can you possibly think of anything that might have lead up to this, or can you reproduce the bug yourself?

Ironman28 commented 9 years ago

Gah! I tried adding dozens of clips to your Cyborg lecture, but I can't make them all disappear! I don't know what to say. The problem with Music for Econ must be some sort of user-error. Likewise the University of California lecture. I'm nervous about doing nothing, though, because this problem has happened more than once and I have been advising people NOT to use lectures until we fix them.

ahelme commented 9 years ago

Well... we could keep testing this, and try to reproduce an error!

Perhaps Markos could have a look/think to see if there might be some other strange reason that the clip associations might be deleted upon editing a lecture...

Markos do you think it is plausible that there could perhaps be some javascript error or unreliability of that clip system, that pops up intermittently? Or.... another cause?

mgogoulos commented 9 years ago

I remember I have also noticed this in the past, but cannot reproduce it. I have copied an existing lecture, and added - deleted clips for some time but was unable to break it. One (lame) solution is to copy a lecture before editing it, ideally we need example details of what went wrong to debug the issue - if this is still an issue. But I would definitely recommend users keep adding (and editing) lectures!