... where it belongs ;-)
load_all_capabiloties() gets called at several points where we don't
want to be re-querying the enrolment backends. It needs to be called
before load_all_capabilities() and only by callers that are setting up
a logon session.
Those callers need to be calling complete_user_login() anyway, as they
need to set the Moodle cookie, log the logon action, etc. In fact,
those callers duplicate a lot of that code already.
The callers that don't duplicate code for the login are actually the
cases where the backend enrolment plugins should not be queried.
To be followed by callers cleanup...
* user_lastaccess deleted when deleting course
* rewritten deleting of contexts - does not use get_context_instance() anymore because it is much more strict now
* added deleting of grade_letters and settings when deleting course
* improved handling of dirty contexts in general - caching, switching in cron, marking, loading, etc.
* role_assing() and role_unassign() now marks dirty contexts because we use has_capability() in this function - we can not do it later outside to speedup bulk operations
* fixed some inline docs
* fixed notice from rs closing
* removed cached $CONTEXT from has_capability() - $context is now required parameter; this was hiding serious bugs when context did not exist or ppl passed false as parameter
* removed some ===, we can not use these on function parameters - we must support ints, strings, '', nulls, etc. - this could be a source of really dangerous bugs in future
* some other improvements and fixes - documented inline
These are functions for handling the volatile entries in the
cache_flags table.
get_cache_flags() - get array of current flags
set_cache_flag() - set a single flag
unset_cache_flag() - unset a single flag
gc_cache_flags() - garbage-collect expired flags
If MDL_PERFINC is defined, we now print to errorlog a listing
of the files included, their size, and then a total size.
The total size isn't the most important metric, though it does give us
a good idea of how much PHP the PHP engine is parsing for us. The main
cost is still in the seeks involved.
Even when using precompilers -- our best-case scenario -- each include
or require forces at least 2 stat()s to compare timestamps in the php
file vs the precompiled file. If the working set fits in buffers we are
fine, but our 60+ stat() calls per page is quite a bit.
A bit of rework around require_login()
- Fixed a subtle bug in the check whether a user can see sitecourse
hidden activities
- Save 1 DBq and 2 includes per call by only calling
get_auth_plugin() only when needed.
- Grab the contexts we are interested in only once and keep them in
variables.
Reworked the logic of the visibility checks so that we evaluate in a
chain:
- can view course (visible or user can see hidden)
- can view category (visible or user can see hidden)
Without this patch, users that could see hidden categories could not get
into courses inside of them.
While at it, fix reference to the old $USER->switchrole
Manually enrolling and unenrolling self, and other users should
transparently set the context dirty. So walk all callers to
role_assign() and role_unassign() and mark the context dirty
where appropriate.
OTOH, most automated-backend enrol/unenrol mechanisms should not.
The backend lookups that happen when you login are well covered
by the login/enrolment process, and don't need to be marked dirty.
