Also added a section to the documentation to indicate why it's probably not a
good idea to rely on this feature for complex stuff. Garbage in, garbage out
applies even to Django code.
Thanks to erik for the test case for this one.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7791 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This patch simplifies a bunch of code for all backends and removes some
duplicate index creation for MySQL, in particular (versions 4.x and later).
Patch from Nis Jørgensen.
Fixed#5671, #5680, #7170, #7186.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7790 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Patch from mturtle@gmail.com. The remaining uses of "%s__pk" in
fields/related.py all look safe, since they are for many-to-many fields, which
doesn't take "to_field" as a parameter.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7785 bcc190cf-cafb-0310-a4f2-bffc1f526a37
When model inheritance is used, the parent objects should be deleted as part of
the delete() call on the child.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7784 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Some fields need to know the right db_table setting in their own
contribute_to_class(), so waiting until Options._prepare() is a little
inconvenient. This is a deep-internals change. No effect on external code.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7777 bcc190cf-cafb-0310-a4f2-bffc1f526a37
The previous change was failing Django's "check for well-formed domain name"
validation, rather than failing on the network side. Providing we don't ever
set up www.broken.djangoproject.com as a valid domain name, this change should
let us control our own destiny.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7776 bcc190cf-cafb-0310-a4f2-bffc1f526a37
We no longer store any reference to Django field instances or models in the
Where node. This should improve cloning speed, fix some pickling difficulties,
reduce memory usage and remove some infinite loop possibilities in odd cases.
Slightly backwards incompatible if you're writing custom filters. See the
BackwardsIncompatibleChanges wiki page for details.
Fixed#7128, #7204, #7506.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7773 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This is pretty much internal-use-only code, so doesn't affect public API at
all, but it's nice to be able to handle things properly in any case. Patch from
emulbreh.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7766 bcc190cf-cafb-0310-a4f2-bffc1f526a37
These types of relations don't have reverse accessor names, so that name can be
used by a normal field on the model. Fixed#7107.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7764 bcc190cf-cafb-0310-a4f2-bffc1f526a37
so that the ordering doesn't accidentally restrict the result set.
(Ironically, one existing test actually showed this problem, but I was too
dumb to notice the result was incorrect.)
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7761 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Field.db_type().
This fixes a problem with using reserved words for field names in Oracle. Only
affects Oracle at the moment, but the same changes could easily be used by
other backends if they are required (requires changing creation.py, only).
This commit also reverts [7501] so that if the fix doesn't work, it will show
up in the tests (and if it does work, the tests will prevent us from breaking
it again).
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7743 bcc190cf-cafb-0310-a4f2-bffc1f526a37
It was causing too many inconvenient and unintended problems when merging
legitimate subclasses (e.g. with geo-django classes). There's still a hook
there that we use when merging ValueQuerySets, but if you try to merge two
disparate QuerySets and it breaks all that happens is you get to keep both
pieces. We're no longer penalising the useful usages just for the people who
aren't concentrating.
Fixed#7113.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7742 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Avoids joining with the wrong tables when connecting select_related() tables to
the main query. This also leads to slightly more efficient (meaning less tables
are joined) SQL queries in some other cases, too. Some unnecessary tables are
now trimmed that were not previously.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7741 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Previously, if we were querying across a nullable join and then a non-nullable
one, the second join would not be a LEFT OUTER join, which would exclude
certain valid results from the result set.
This is the same problem as [7597] but for values() field specifications, so
this covers the second case where Django adds extra stuff to the select-clause.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7740 bcc190cf-cafb-0310-a4f2-bffc1f526a37
