that happens with MySQL when a "GROUP BY" clause is included. This is a
backend-specific operation, so any other databases requiring similar
encouragement can have a function added to their own backend code.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9637 bcc190cf-cafb-0310-a4f2-bffc1f526a37
lookup in the serializable_value() method. This means that abstract
parents that are multi-table children of other models(no, really!!) now
work again.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9618 bcc190cf-cafb-0310-a4f2-bffc1f526a37
"value" for a field that is a relation to another model.
This part adds the utility method on Model that should help in general.Also
cleans up the slightly ugly mess from r8957.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9601 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Descriptors now return themselves when accessed via the class, as per standard
Python descriptors like property().
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9550 bcc190cf-cafb-0310-a4f2-bffc1f526a37
backend.
This allows Querysets to be cached for Oracle and should provide a model for
adding pickling support to other (external) database backends that need a
custom Query class.
Thanks to Justin Bronn for some assistance with this patch.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9272 bcc190cf-cafb-0310-a4f2-bffc1f526a37
again later (order_by('foo')). Or, at least, it can now. Thanks to Ilya
Novoselov for diagnosing the problem here.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9206 bcc190cf-cafb-0310-a4f2-bffc1f526a37
more than 20 objects.
This means that accidentally executing HugeStoryArchive.objects.all() at the
interactive prompt (or in the debug template) won't try to load all 4,233,010
stories into memory and print them out. That would previously cause resource
starvation and other "interesting" crashes.
If you really, really want the previous behaviour (e.g. in a doctest that
prints more than 20 items), display "list(qs)" instead of just "qs".
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9202 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Any extra(select=...) columns can be ignored in the SQL for dates, since we are
only interested in extracting distinct date values. We were previously
including them by accident and it was generating incorrect SQL.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9091 bcc190cf-cafb-0310-a4f2-bffc1f526a37
"having" attributes, only the former was included in the resulting SQL, meaning
subclasses had to completely duplicate Query.as_sql() if they were using any
kind of grouping filtering on the results.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@9007 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This was triggered by r8794, but was, in fact, fairly fragile before then. The
current fix is the correct way we should be doing this.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8898 bcc190cf-cafb-0310-a4f2-bffc1f526a37
sometimes also sharing aliases, instead of creating their own. This was
generating incorrect SQL.
No representative test for this fix yet because I haven't had time to write one
that fits in nicely with the test suite. But it works for the monstrous example
in #8790 and a bunch of other complex examples I've created locally. Will write
a test later.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8853 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Also added documentation describing how manager inheritance works (and when
manager aren't inherited). Based on some patches from sebastian_noack and
emulbreh.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8851 bcc190cf-cafb-0310-a4f2-bffc1f526a37
efficient than possible SQL in some odd cases (found via code inspection, not
any particular failing example).
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8831 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Yes, this really is a commit that fixes an oversight in a commit that fixed an
oversight. One day I'll get it right.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8829 bcc190cf-cafb-0310-a4f2-bffc1f526a37
I can't reproduce the original error leading to #8115 and the patch. However, the only harm this change could cause is to raise more `CyclicDependency` exceptions than strictly necessary. That's better than infinite loops, at least, and it's easier to clean up in the future when we figure out the actual fix.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8807 bcc190cf-cafb-0310-a4f2-bffc1f526a37
convert it to an IntegrityError, which seems like the more natural case (and is
consistent with other backends). This makes exception handling in Django much
easier.
The solution is extensible for any other error codes we may wish to add going
forwards.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8692 bcc190cf-cafb-0310-a4f2-bffc1f526a37
fields (the latter was causing problems). This allows these values in URLs
(e.g. the admin filtering).
Not an ideal solution to the problem, but will do the job for the time being.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8691 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Backwards incompatible if you are using manually-specific primary key values
and relying on the previously documented behaviour that the new values would
always exist in the database (i.e. it would update the existing entry).
Fixed#8419.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8670 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Also comes with approximately 67% less stupidity in the table joins for
filtering on generic relations.
Fixed#5937, hopefully for good, this time.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8644 bcc190cf-cafb-0310-a4f2-bffc1f526a37
* Removed `Manipulator`, `AutomaticManipulator`, and related classes.
* Removed oldforms specific bits from model fields:
* Removed `validator_list` and `core` arguments from constructors.
* Removed the methods:
* `get_manipulator_field_names`
* `get_manipulator_field_objs`
* `get_manipulator_fields`
* `get_manipulator_new_data`
* `prepare_field_objs_and_params`
* `get_follow`
* Renamed `flatten_data` method to `value_to_string` for better alignment with its use by the serialization framework, which was the only remaining code using `flatten_data`.
* Removed oldforms methods from `django.db.models.Options` class: `get_followed_related_objects`, `get_data_holders`, `get_follow`, and `has_field_type`.
* Removed oldforms-admin specific options from `django.db.models.fields.related` classes: `num_in_admin`, `min_num_in_admin`, `max_num_in_admin`, `num_extra_on_change`, and `edit_inline`.
* Serialization framework
* `Serializer.get_string_value` now calls the model fields' renamed `value_to_string` methods.
* Removed a special-casing of `models.DateTimeField` in `core.serializers.base.Serializer.get_string_value` that's handled by `django.db.models.fields.DateTimeField.value_to_string`.
* Removed `django.core.validators`:
* Moved `ValidationError` exception to `django.core.exceptions`.
* For the couple places that were using validators, brought over the necessary code to maintain the same functionality.
* Introduced a SlugField form field for validation and to compliment the SlugField model field (refs #8040).
* Removed an oldforms-style model creation hack (refs #2160).
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8616 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This isn't a complete solution to this class of problem, but it will do for
1.0, which only has generic relations as a multicolumn type. A more general
multicolumn solution will be available after that release.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8608 bcc190cf-cafb-0310-a4f2-bffc1f526a37
instances. We weren't skipping the correct output columns before processing
subsequent existing related instances. Thanks to mrmachine for the test case.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8598 bcc190cf-cafb-0310-a4f2-bffc1f526a37
used in "month" and "day" filters on date/datetime fields. Without this commit,
SQLite behaved inconsistently after [8494].
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8526 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This restores filtering on dates in the admin, for example. Thanks to akfarrell
and a small team of workers at the Portland Sprint.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8494 bcc190cf-cafb-0310-a4f2-bffc1f526a37
fields no longer creates duplicate copies of the join table(s). Basically, this
means filters on the join table (for ManyToManyField(through=...)) and complex
filters in the normal (non-through) case don't produce incorrect or duplicate
results.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8472 bcc190cf-cafb-0310-a4f2-bffc1f526a37
environment doesn't support os.listdir(), we crashed whilst trying to construct
the friendly error message. This was not so friendly.
This patch handles that case (which occurs in real life in Google App Engine).
Patch from Guido van Rossum.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8424 bcc190cf-cafb-0310-a4f2-bffc1f526a37
code. As pointed out in the ticket, Python still lets you raise all sorts of
odd things as exceptions (e.g. strings), so even though they're bad form, we
should still handle them. We do that cleanly now. Thanks to jim-django@dsdd.org
for the patch.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8419 bcc190cf-cafb-0310-a4f2-bffc1f526a37
transaction (after another exception in the code), make sure the original
exception is reported, rather than the rollback-generated one. The latter is
almost certainly a consequence of the former. Patch from Karen Tracey.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8411 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This effectively reverses the change in [7798]. It was proving too difficult to
successfully manage all the side effects here and provide a satisfactory
solution for everybody. Many thanks to arne, Martin von Löwis and, particular,
Karen Tracey, for doing a lot of research and proto-patches here to establish what was possible and practical.
This is backwards incompatible if you were relying on the behaviour after
[7798]. The docs have been updated to indicate the solution.
Refs #2170, #7789, #8102.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8319 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Fixed#7402.
Also made savepoint handling easier to use when wrapped around calls that might
commit a transaction. This is tested by the get_or_create tests.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8315 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This is a no-op for most databases. Only necessary on PostgreSQL so that we can
do things which will possibly intentionally raise an IntegrityError and not
have to rollback the entire transaction. Not supported for PostgreSQL versions
prior to 8.0, so should be used sparingly in internal Django code.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8314 bcc190cf-cafb-0310-a4f2-bffc1f526a37
* Support for representing files as strings was removed. Use `django.core.files.base.ContentFile` instead.
* Support for representing uploaded files as dictionaries was removed. Use `django.core.files.uploadedfile.SimpleUploadedFile` instead.
* The `filename`, `file_name`, `file_size`, and `chuck` properties of `UploadedFile` were removed. Use the `name`, `name`, `size`, and `chunks` properties instead, respectively.
* The `get_FIELD_filename`, `get_FIELD_url`, `get_FIELD_size`, and `save_FIELD_file` methods for Models with `FileField` fields were removed. Instead, use the `path`, `url`, and `size` attributes and `save` method on the field itself, respectively.
* The `get_FIELD_width` and `get_FIELD_height` methods for Models with `ImageField` fields were removed. Use the `width` and `height` attributes on the field itself instead.
* The dispatcher `connect`, `disconnect`, `send`, and `sendExact` functions were removed. Use the signal object's own `connect`, `disconnect`, `send`, and `send` methods instead, respectively.
* The `form_for_model` and `form_for_instance` functions were removed. Use a `ModelForm` subclass instead.
* Support for importing `django.newforms` was removed. Use `django.forms` instead.
* Support for importing `django.utils.images` was removed. Use `django.core.files.images` instead.
* Support for the `follow` argument in the `create_object` and `update_object` generic views was removed. Use the `django.forms` package and the new `form_class` argument instead.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8291 bcc190cf-cafb-0310-a4f2-bffc1f526a37
searching within a field column (e.g. "like", "contains", etc). Required for
PostgreSQL 8.3. Thanks to Dan Watson for the patch.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8242 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Though some attempts and backwards-compatibility were made, speed trumped compatibility. Thus, as usual, check BackwardsIncompatibleChanges for the complete list of backwards-incompatible changes.
Thanks to Jeremy Dunck and Keith Busell for the bulk of the work; some ideas from Brian Herring's previous work (refs #4561) were incorporated.
Documentation is, sigh, still forthcoming.
Fixes#6814 and #3951 (with the new dispatch_uid argument to connect).
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8223 bcc190cf-cafb-0310-a4f2-bffc1f526a37
* Model init no longer performs a database query to refetch the related objects it is passed.
* Model init now caches unsaved related objects correctly, too. (Previously, accessing the field would raise `DoesNotExist` error for `null=False` fields.)
* Added tests for assigning `None` to `null=True` `ForeignKey` fields (refs #6886).
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8185 bcc190cf-cafb-0310-a4f2-bffc1f526a37
At the same time, checked all other cases of db_prep_value() to ensure they
aren't making the same mistake.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8143 bcc190cf-cafb-0310-a4f2-bffc1f526a37
loading/saving interactions with the databases into django.db.backend. This
helps external db backend writers and removes a bunch of database-specific
if-tests in django.db.models.fields.
Great work from Leo Soto.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8131 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Malcolm Tredinnick
Matt Boersma
Luke Plant
Ian Kelly
Russell Keith-Magee
Karen Tracey
Adrian Holovaty
Jacob Kaplan-Moss
Brian Rosner
Gary Wilson Jr