If cron hasn't run for a few days, it would take
several runs for chat_update_chat_times() to get things back on track.
Now it's all fixed in one go, saving a bit of DB traffic. It all adds
up...
Delete stale msgs in one DB query rather than in 1-per-chat-instance.
(From 600 DB queries to 1 on a site with 600 chat instances.)
Also - a walkthrough of chat_update_chat_times(), which seems buggy.
Fix for MDL-8515: Prefixing chat messages with a slash should not hide the
user's name unless it's a special command we handle.
I completely removed the emoticon handling case, but it seems like it was
not needed for a long time now? Emoticons work just fine without it.
MDL-7962 chat seems to be completely broken in head (fixed wrong JS)
* reworked chat themes support
MDL-8338 Cron does not need cookies
MDL-8339 forum cron capabilities problems
* minor deprecated function current_encoding() cleanup
+ improved print_user_picture() to allow images with empty alt to prevent repetitive reading of usernames in jaws when username is printed next to avatar
- new gui_basic that can be used as fallback or accessible option to gui_header_js - it is not compatible with chat daemon
- todo: CSS styling, beeping, JS fallback code in view.php and noframes fallback in gui_header_js
- minor changes in messaging language strings
- minor coding style improvements
The API was changed slightly so that has_capability now takes the
whole $context object (we almost always have it anyway)
The $kill thing was removed. If you want to assert a capability
then use:
require_capability('capname', $context);
with optional variables to modify the error message
Misc bugs here and there also removed and code tidied
=======================================
WARNING: DEV IS CURRENTLY VERY UNSTABLE.
This is a mega-checkin of the new Roles system. A lot of changes have
been made in core and modules.
Currently there are a lot of rough edges and known problems. We are
working hard on these .. .the reason for getting this into HEAD at this
stage is enable us to move faster (our branch was diverging from HEAD
too much).
Please keep an eye on http://docs.moodle.org/en/Roles for current status
and information for developers on how to use the new Roles system.
The original commit was:
mod/chat - use empty value instead of erroring out if $USER->lastIP and getremoteaddr() don't yield any interesting value
Sometimes we can't get any useful IP for the user -- and this may even be a
valid situation. So fudge an empty value -- the DB needs it as the IP field
is NOT NULL.
Sometimes we can't get any useful IP for the user -- and this may even be a
valid situation. So fudge an empty value -- the DB needs it as the IP field
is NOT NULL.
This is an alternative version of jsupdate.php that acts
as a long-running daemon. It will feed/stall/feed JS updates
to the client. From the module configuration select "Stream"
updates.
The client connection is not forever though. Once we reach
CHAT_MAX_CLIENT_UPDATES (currently 1000), it will force
the client to re-fetch it.
This buys us all the benefits that chatd has, minus the setup,
as we are using apache to do the daemon handling.
Chat still defaults to the normal update method, which is now
optimised to take advantage of keepalives -- so this change is
safe. The instructions in the config page also indicate that this
mode may not be well supported everywhere. It hasn't been
tested on IIS for starters.
In terms of relative cost -- if each hit on jsupdate.php incurs
on ~20 db queries and delivers one update to the client, each hit
on jsupdate takes ~20 queries, and then roughly 2~3 queries to
serve each of the next 1000 updates. On busy sites, the difference
is huge.
There is still room for enhancements in both keepalive and stream
update methods. I am pretty sure we can trim DB queries more.
$USER->lastIP is sometimes not set properly during login, fetch it if we can
or error out clearly -- we won't be able to login the user to the chat if
we don't have an IP address to match him/her against.
