Export pdf checklist does not work when too many columns

[holgerm]

Problem and impact

When trying to export a checklist as pdf for an event with many custom questions, so that the expected table will not fit on one page, regarding the width, pretix does not answer with a pdf file. Instead the celery process gets 99% CPU on the server and stays there until killed manually. I tested this by adding one question after the other, and it worked well, until the table got too wide.

Expected behaviour

Should export a pdf file with multiple pages width or something similar. Or at least should come up with an error message indicating that too many columns would be needed, so that a checklist pdf can not be generated.

Steps to reproduce

1. Create an event
2. Add many questions to the event (maybe 15 or so)
3. Go to export -> checklist as pdf
4. Select all questions and start export

Screenshots

No response

Link

No response

Browser (software, desktop or mobile?) and version

No response

Operating system, dependency versions

Ubuntu 20.04.5 LTS

Version

recent

[raphaelm]

I wasn't able to reproduce this quickly, unfortunately, for me it exited with an error message about not being able to fit the resulting column heights on one page, which is kinda expected.

How many questions do you select exactly? It might matter.

[holgerm]

I think it was ok with 10 but stopped working with 11 columns all together. I attached a page of the export wich was the largest that worked. One question more at it crashed. --- Holger Mügge Clostermannstr. 1 51065 Köln

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On 4. Apr 2023, at 19:54, Raphael Michel ***@***.***> wrote: I wasn't able to reproduce this quickly, unfortunately, for me it exited with an error message about not being able to fit the resulting column heights on one page, which is kinda expected. How many questions do you select exactly? It might matter. — Reply to this email directly, view it on GitHub <#3208 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAOZKJHX6D2LV7RVSYL76TW7RN5FANCNFSM6AAAAAAWSZMDBQ>. You are receiving this because you authored the thread.

[raphaelm]

Hmm, I think I tested with more than 10. I don't think your attachment arrived.

[holgerm]

I copied screenshot of the exported pdf again as attachment to this mail. Does not work? --- Holger Mügge Clostermannstr. 1 51065 Köln

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On 4. Apr 2023, at 23:18, Raphael Michel ***@***.***> wrote: Hmm, I think I tested with more than 10. I don't think your attachment arrived. — Reply to this email directly, view it on GitHub <#3208 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAOZKJJE2ITL5D2HFHPTXLW7SF2RANCNFSM6AAAAAAWSZMDBQ>. You are receiving this because you authored the thread.

[holgerm]

Here I attach some screenshots: - top before the export is triggered - pretix export page before - pretix export page after triggered export - top after … (this stays until I kill the celery process) - pretix page after killing the celery process (with error message on top) I hope the attachments are visible to you. ??? --- Holger Mügge Clostermannstr. 1 51065 Köln

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On 4. Apr 2023, at 23:18, Raphael Michel ***@***.***> wrote: Hmm, I think I tested with more than 10. I don't think your attachment arrived. — Reply to this email directly, view it on GitHub <#3208 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAOZKJJE2ITL5D2HFHPTXLW7SF2RANCNFSM6AAAAAAWSZMDBQ>. You are receiving this because you authored the thread.

[raphaelm]

I think you need to add it directly on Github, attachments to email replies are ignored.

[holgerm]

Ok - here come the screenshots ...

1. top before the export is triggered:

2. pretix export page before

3. pretix export page after triggered export

4. top after … (this stays until I kill the celery process)

5. pretix page after killing the celery process (with error message on top)