When adding a CSS injector file, cached pages on the site do not get cleared. A site admin must perform a full site cache clear.
The cache tag for "library_info" is cleared when updates to a CSS injector rule are made, but this cache tag doesn't appear to be bubbled up to page cache and dynamic page cache entries, so they are not invalidated.
In this module's hook_page_attachments, which adds the asset libraries to the page as attachments, there's this comment:
* Note that the list_cache_tags (library_info) are not added here and need not,
* as tha caller already does it. Setting asset entityies' list_cache_tags to
* library_info makes the library-info invalidate on asset change.
* While changing and deleting of assets will trigger invalidation by their
* individual cache tags, the list cache tags guarantees invalidation on new
* asset creation.
So it's not adding library_info cache tag, but it probably should be. Maybe core was doing this at one point, and stopped?
We should consider adding this tag explicitly.
| Comment | File | Size | Author |
|---|---|---|---|
| #18 | add-library-info-tag-3181674-8.patch | 1.02 KB | bingol@ciandt.com |
| #11 | add-library-info-tag-3181674-11.patch | 1.34 KB | bkosborne |
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Comments
Comment #2
bkosborneComment #3
bkosborneHere I updated the code to add the library_info cache tag to pages.
Comment #4
pookmish commented@bkosborne, I was unable to reproduce the issue using a fresh install of Drupal 9. I've attempted this with caching turned on and off, with aggregation turned on and off.
That being said, I would not be entirely opposed to adding additional cache tags to the page attachments. It certainly doesn't hurt anything to have more cache tags. However, I would prefer to have a separate cache tags. perhaps `asset_injector:library_info` cache tag. This would allow us to be more independent of the `library_info` cache tag.
Comment #5
bkosborneHmm ok. Maybe something specific with our setup. I'll try and test with a clean install as well.
Comment #6
pookmish commentedComment #7
bkosborneRevisiting this. I updated the steps to reproduce to make it clearer. Re-rolled patch.
I understand your hesitation but I don't think you need to worry. This cache tag is not invalidated frequently. It's only when there's updates to library definitions, which does not occur often, and certainly not doing normal content operations on a site. For what it's worth, I've been using my original path for 8 months on well over 50 sites that use asset injector and haven't had any issues.
Adding a new cache tag that only this module uses is certainly possible though. We just need to invalid it ourselves on the asset injector forms. Adds a bit of complexity though.
Comment #8
bkosborneComment #9
geek-merlinPatch looks good to me and no, we don't need independent cache tags, just the correct ones.
Yes, we need to implement the list cache tags. And: Instead of hardcoding them, get the 2 config entity types from the EntityTypeManager, and leverage \Drupal\Core\Entity\EntityTypeInterface::getListCacheContexts & \Drupal\Core\Entity\EntityTypeInterface::getListCacheTags. That way we get the right thing, even if altered.
Comment #10
geek-merlinComment #11
bkosborneOkay, that makes sense. I didn't realize I could pull the tags and contexts from that interface. Here's an updated patch that does that.
Comment #12
anybodyThanks @bkosborne patch LGTM so far, perhaps it would make sense to proceed using a MR instead of patches? Would you do that?
Furthermore some simple tests might be good to ensure it works as expected.
Comment #15
hswong3i commented@bkosborne #11 not working for me and report error message as below:
NOTICE: PHP message: Uncaught PHP Exception TypeError: "Drupal\Core\Render\Renderer::addCacheableDependency(): Argument #1 ($elements) must be of type array, null given, called in /var/www/html/modules/contrib/asset_injector/asset_injector.module on line 141" at /var/www/html/core/lib/Drupal/Core/Render/Renderer.php line 690Rolling back with #7 looks much better ?_?
Comment #16
bkosborneI don't see how that's possible. $elements is an array typed property on the function. If it were null, PHP should have thrown a different error when _asset_injector_add_element_libraries was invoked. What version of Asset Injector are you using, and what other patches (if any) do you have applied?
Comment #17
anybody@hswong3i comparing your MR's diff with the patch from #11 you can see they are different. Please first fix the MR to be 1:1 like #11
Comment #18
bingol@ciandt.com commentedComment #19
pookmish commentedI'll use the patch from #11. Conveniently, I was able to verify using an existing unit test. I was able to remove a `drupal_flush_all_caches()` from the test and the test would pass with the patch, but fail without.
Thanks.
Comment #21
pookmish commented