Bug #62767
closed
Missing function to clear processed images (FAL image cache)
Added by Christian Ludwig about 10 years ago.
Updated almost 9 years ago.
Category:
File Abstraction Layer (FAL)
Description
There is no functionality in TYPO3 6.2 that allows to clear the new image cache (processed folders in typo3temp and file storages + sys_file_processedfile database table).
To clear the table a function exists in the Upgrade Wizard, but it is not available after completing a migration and it does not delete the files on file storages, so there are lots of files left without reference (do they get deleted someday?).
In addition:
A "trigger" to delete processed files (i. e. a hook in the core "clear cache" function) should be available in every FAL Driver like S3 and so on.
- Status changed from New to Needs Feedback
Hello Christian,
if you just delete the processed files, you would end up in a frontend with missing images, since the frontend would deliver cached pages with image references. Thus the page cache must also be cleared.
Can you provide a use case, why the already generated images should be cleared by a backend task (Besides of cleaning this directory)?
You are right, the page cache should be cleared too.
The reason why a clear cache function for FAL is needed are the same as they are for the old image system.
Some of the reasons are:
- Clean up unneeded image sizes (i. e. when image size was globally changed by TypoScript setting)
- Clean up database an file system from all temp data before backups
- Clean up temp files, when original images got deleted by external process (WebDAV, rsync, ...)
- Problems with bugs in current FAL version (i. e. change image file by FTP or other application, wrong image sizes, ...)
I provided reasons for adding a possibility to clear sys_file_processedfiles in the issue I related to this one.
Ingo Schmitt wrote:
Can you provide a use case, why the already generated images should be cleared by a backend task (Besides of cleaning this directory)?
Feedback was given, can anyone please change the status of this issue? Thanks.
+1 This is def. a must have!
While i'm messing around with many images while developing a website i would love to have a "RefreshAllProcessedImages"-Button do replace the placeholders with the final content
I think I've got another use case:
When changing the FAL image names (e.g. for SEO reasons) it seems there is no way to force a re-rendering of the cached processed images. Or do I miss something?
another use-case: we have extensions importing data and images from foreign sources. changed images are updated on every import in uploads/tx_****/, but the new typo3temp/_processed_/ imagecache is ignoring these image updates.
There also seems to be an issue when using the replace file function. The system still uses the old file until some time later.
- Status changed from Needs Feedback to New
- Target version changed from next-patchlevel to 7.5
- Target version changed from 7.5 to 7 LTS
- Status changed from New to Closed
- % Done changed from 0 to 100
this was solved in 6.2 and 7 with a clean-up option within the install tool.
Is it possible to enable this feature within the "Clear cache" dropdown for non-administrator backend users? We have the same issue as #7 on a regular basis and would like to perform the clean-up from within the normal TYPO3 backend.
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