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git-svn-id: http://code.djangoproject.com/svn/django/trunk@9816 bcc190cf-cafb-0310-a4f2-bffc1f526a37

This commit also decomposes the decorator into two decorators which can be
used separately, adds some tests, updates docs and fixes some code comments.



git-svn-id: http://code.djangoproject.com/svn/django/trunk@9815 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10187 -- Added documentation on how to import F() objects. Thanks to trigeek38 for the report.

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Fixed #10127 -- Corrected (no, really, this time!) the way the select_related() cache is populated when annotations are also contained in the query. Thanks to Sylvain Pasche <sylvain.pasche@gmail.com> for the report and test case.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9808 bcc190cf-cafb-0310-a4f2-bffc1f526a37

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9806 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10127 -- Corrected handling of select_related() in annotate() calls. Thanks to Sylvain Pasche <sylvain.pasche@gmail.com> for the report and test case.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9805 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10142 -- Added docs and an exploding error message to highlight an error present in the implementation of STDDEV_POP and VAR_POP in PostgreSQL 8.2-8.2.4 that will give incorrect answers (the database function mistakenly returns sample, rather than population deviation/variance). Thanks to Vinay Sajip <vinay_sajip@yahoo.co.uk> for the report, and Ian Kelly for pointing out the cause of the problem.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9804 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #9858 -- Added ability to use PostGIS template with GIS test runner via `POSTGIS_TEMPLATE` setting.  Thanks to Aryeh Leib Taurog for feature suggestion and initial patch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@9803 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Now use `subprocess.Popen` instead of the deprecated os.popen3 to issue PostGIS test database creation commands.


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Fixed #8638 -- Added documentation on how to redirect email to a dummy server for testing purposes. Thanks to Rob Hudson and Marc Fargas for their work on the draft for this change.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9793 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Many thanks to:
    * Nicolas Lara, who worked on this feature during the 2008 Google Summer of Code.
    * Alex Gaynor for his help debugging and fixing a number of issues.
    * Malcolm Tredinnick for his invaluable review notes.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9792 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Refs #10113 -- Modified the generated SQL to remove redundant GROUP BY elements, and modified the test added in [9788] to remove a test result that depended on a potentially ambiguous database ordering.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9791 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10110 -- Added FAQ on how and when to poke the core developers about tickets. Thanks to Graham King for turning a couple of django-dev posts into a good first draft.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9789 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10113 -- Ensured that joined fields mentioned in order_by() are included in the GROUP_BY clause on those backends that require it. Thanks to Koen Biermans <koen.biermans@werk.belgie.be> for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9788 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10052 -- Added import line for other aggregates used in examples. Thanks to Tyler Brownell <tyler@bluefoxstudio.ca> for the suggestion.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9787 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10089 -- Corrected handling of aggregates when the query set contains no items (and the cursor returns None). Thanks to Kyle Fox for the report, and david for the initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9786 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10100 -- Corrected handling of the negation required exclude() clauses that reference aggregate columns. Thanks to Anossov for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9785 bcc190cf-cafb-0310-a4f2-bffc1f526a37

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Fixed #10064 -- Corrected handling of aggregate queries that also use select_related(). Thanks to olivius for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9781 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #9275: Extended the Oracle date format to allow DATE columns to be used with DateTimeFields, especially when using legacy databases. Thanks to hollerith for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9779 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #10069 -- Fixed the model form unique validation code to not proceed with using, for example, RelatedObjects returned by get_field_by_name as though they were model Fields.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@9777 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Patch from Frank Wierzbicki.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9775 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Corrected code in serializers_regress testcase so that, in the case where an exception has been raised, rollback is called before attempting to leave transaction management.  With the old code the original exception (IntegrityError on InnoDB) was getting hidden by a transaction management error resulting from attempting to leave transaction management with a pending commit/rollback. 


git-svn-id: http://code.djangoproject.com/svn/django/trunk@9773 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Fixed #8055: Replaced use of traceback.format_exc (new in Python 2.4) with something that works as far back as 2.3.

Thanks to Ramiro for diagnosis and patch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@9770 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Added code to make TestSuites iterable when running on Python 2.3.  (r9756 added code that iterates over them, thus broke running tests on Python 2.3, sigh.)


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Fixed #10044: You can now assign directly to file fields (`instance.filefield = somefile`). Thanks, Marty Alchin.

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  * The new method uses an admin configuration option (`formfield_overrides`); this makes custom admin widgets especially easy.
  * Refactored what was left of `formfield_for_dbfield` into a handful of smaller methods so that it's easier to hook in and return custom fields where needed.
  * These `formfield_for_*` methods now pass around `request` so that you can easily modify fields based on request (as in #3987).

Fixes #8306, #3987, #9148.

Thanks to James Bennet for the original patch; Alex Gaynor and Brian Rosner also contributed.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9760 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Previous behaviour was pretty stupid. Let's never speak of it again. New
behaviour both works and is documented.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9759 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Returning non-ASCII characters from TextNode.__repr__ was causing
problems in the BlockNode.__repr__ method (and probably in other places
we don't know about yet). We now forcibly convert to ascii and replace any
unconvertible characters, rather than returning some moderately
corrupted data in the non-ASCII case.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9757 bcc190cf-cafb-0310-a4f2-bffc1f526a37