This commit coverts everything in the codebase to use the new
users_order_by_sql function when sorting lists of users. More details in
the bug.
Note that this does not change places where users are displayed in a
sortable table, and the sort order comes from the table.
1. get_context_name should respect the $CFG->courselistshortnames
setting.
2. When $CFG->courselistshortnames is on, what to display should use a
language string, rather than string concatenation. This makes it
possible for people to configure the display. For example, they might
want 'My first course [M101]' instead of 'M101 My first course'.
Adding this list of role assignments should make it much easier for
admins to work out why, when the permissions shown in the check
permisisons page are now what they expect.
I thought about making the links go more directly to, for example, the
assign roles pages for each context, but because of things like
enrolments in courses that is hard. It is only two clicks to go to the
context, then click the right link in the settings block there.
I also re-orderd some of the code in check.php to try to get all the DB
code before all the output code.
The problem was that the query was updating every row whether it needed
it or not. This turns out to be a really bad thing to do on Postgres,
because it then triggers a long expensive vacuum, which lock the context
table for a long time a really bad thing to do.
Includes:
* constants refactoring
* reworked db table init
* support for $CFG->debug = -1
* functional DB tests
* fixed $DB->get_indexes() to not throw exceptions when table does not exist
* fix handling of user passwords in test db
* add debug info to exception messages
* removed unnecessary PHP debug errors from mathslib
* fixed @error suppression in get_string
* fixed PHPUnit error handler setup
* added timezone info to default install
Classes with magic properties such as context do not pass through json_encode().
The solution is to implement iterator in such classes and convert what we
feed to json_encode to array using 'foreach' before we pass it to json_encode():
- class context implements IteratorAggregate
- added function convert_to_array() that converts anything to array
- before calling json_encode we convert the argument to array
The switched order may create problems in older PHP versions or opt caches. In any case it is more logical to define the classes in this order. Sorry for the trouble.
Refactoring and improvements of the accesslib.php library including prevention of access for not-logged-in users when forcelogin enabled, improved context caching, OOP refactoring of contexts, fixed context loading, deduplication of role definitions in user sessions, installation improvements, decoupling of enrolment checking from capability loading, added detection of deleted and non-existent users in has_capability(), new function accesslib test, auth and enrol upgrade notes.
More details are available in tracker subtasks.
