primary keys from character strings to integers, and makes corresponding code
changes.
This was prompted by database limitations discovered when trying to make
DocAlias use a m2m document field; with 255 long strings as primary keys for
Document and DocAlias this violated the MySQL database limitations.
Changing the primary keys to integers should also improve efficiency.
Due to the data migrations which create the new integer primary keys and adds
corresponding integer foreign keys matching the previous string foreign keys
in all tables having foreign keys to Document and DocAlias, some of these
migrations take a long time. The total set of migrations are expected to have
a runtime on the order of 2 hours.
- Legacy-Id: 16237
for groups. In the process, added some select_related/prefetch_related
code to cut the number of database queries in the agenda down from
4000-5000 to about 50. Rewritten agenda CSV code to use Python arrays
rather than a template for improved readability/reuse. Rewritten week
view to assemble its data in Python. Plus a few other minor cleanups,
e.g. lame_description is now gone.
Fixes#1088. Branch ready for merge.
- Legacy-Id: 9669
currently active, otherwise we can't see from the return value whether
a given time predates the history set. The downside is that the caller
may now need to check whether it got a history object or the same
object back.
- Legacy-Id: 4560
