Edgewall Software

Opened 15 years ago

Closed 15 years ago

Last modified 15 years ago

#5408 closed defect (wontfix)

'trac.web.chrome.add_script' called from 'INavigationContributor.get_navigation_items()'

Reported by: catalin.balan@… Owned by: Jonas Borgström
Priority: normal Milestone:
Component: general Version: devel
Severity: normal Keywords:
Cc: Branch:
Release Notes:
API Changes:
Internal Changes:


If within a class that implements INavigationContributor the add_script( or 'add_xxx' ) method is called from get_navigation_items(), an infinite loop it's generated.

Reason: The get_navigation_items() it's called in Chrome.prepare_request() before req.chrome object it's created.

Attachments (1)

traceback.txt (156.8 KB ) - added by catalin.balan@… 15 years ago.

Download all attachments as: .zip

Change History (5)

by catalin.balan@…, 15 years ago

Attachment: traceback.txt added


comment:1 by osimons <simon-code@…>, 15 years ago

The kind of error you got is something that is likely to happen when you use the API in a way that is not intended. And, usually you quickly see that it is not working and look for alternative solutions.

In my opinion, the IRequestFilter.post_process_request() is the correct location to add scripts - or of course the IRequestHandler if you are adding scripts to your own handler. However, note ticket #5594 where the post-processor will not actually work if various errors occurs - it did work in 0.10 though, and hopefully will again soon..

Adding error checking for various 'creative' uses of the API by developers when good alternatives exist, is something I think is not very high on the list of priorities. Once #5594 got fixed, would you be happy to change your code to use alternative interface - and close this ticket as 'wontfix'?

comment:2 by catalin.balan@…, 15 years ago

Yes, you're right. Actually I've discovered this while I was trying to make ctxtnavadd plugin to work on 0.11.

(Sorry for late response)

comment:3 by ThurnerRupert, 15 years ago

Resolution: wontfix
Status: newclosed

as requested, osimons proposed to use #5594 interface

comment:4 by Christian Boos, 15 years ago

Milestone: 0.11.1

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