#22086: Building of template nodelist inside cache blocks
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Reporter: HenrikOssipoff | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Template system | Version: 1.6
Severity: Normal | Resolution:
Keywords: template, cache | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by jaap3):
I did some investigating and I don't think this is possible. `CacheNode`
can only determine if something is in the cache at render time (it needs
the context to look up `vary_on`). The "inner" node list is built at parse
time by `do_cache`.
Even if moving the cache lookup to `do_cache` was possible I would advise
against it. It could cause (performance) issues by making the parser do
cache lookup, way ahead of rendering.
In your specific case I would look into what your custom tags `__init__`'s
are doing and, if possible, to defer as much as possible to `render`.
--
Ticket URL: <https://code.djangoproject.com/ticket/22086#comment:3>
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