** Changed in: mahara
Milestone: 1.8rc1 => 1.8.0
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https://bugs.launchpad.net/bugs/1187212
Title:
Handle timezone mismatch between webserver and DB (MySQL) server
Status in Mahara ePortfolio:
In Progress
Bug description:
If the timezone of the MySQL DB server doesn't match the timezone of
the webserver (e.g. you're in AWS, where the DB server is always
unchangeably UTC, and you want the webserver to be in a reasonable
timezone for your users), then you get odd offset issues in, for
example, the timestamps on forum posts.
The webserver takes "now" in it's local timezone, formatted as a
date/time (text), and puts it into the INSERT statement. The DB sees
that, interprets it as the formatted date/time, but in it's time zone
(UTC), which is some number of hours offset from the actual time. It
stores that as a unix epoch time (seconds from 00:00:00 1-1-1970).
When this is sent back to the client, the epoch time is converted back
to the local timezone, and it displays as some number of hours offset.
The simplest solution is to set the timezone on the MySQL connection, forcing
the text date/time values to be interpreted as being in that timezone; they are
stored correctly in epoch format, which will then display properly on viewing.
It's a simple patch:
--- lib/dml.php.orig 2013-05-22 22:33:27.229452915 -0400
+++ lib/dml.php 2013-05-22 22:35:44.403280333 -0400
@@ -1474,6 +1474,9 @@
if (is_mysql()) {
$db->Execute("SET SQL_MODE='POSTGRESQL'");
+ if(!empty($CFG->dbtimezone)) {
+ $db->Execute("SET time_zone='$CFG->dbtimezone'");
+ }
}
It requires you to set dbtimezone in config.php, to the timezone of
the server (so maybe it's a poorly named option; I'm open to
alternative suggsions).
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