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Code Issues 32 Releases Wiki Activity

Fixed #10414 -- Made select_related() fail on invalid field names.

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Niclas Olofsson
2014-12-04 21:47:48 +01:00
committed by Tim Graham
parent b27db97b23
commit 3daa9d60be
6 changed files with 180 additions and 11 deletions
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18
docs/releases/1.8.txt
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@@ -681,6 +681,24 @@ lookups::
...
ValueError: Cannot query "<Book: Django>": Must be "Author" instance.
``select_related()`` now checks given fields
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
``select_related()`` now validates that the given fields actually exist.
Previously, nonexistent fields were silently ignored. Now, an error is raised::
>>> book = Book.objects.select_related('nonexistent_field')
Traceback (most recent call last):
...
FieldError: Invalid field name(s) given in select_related: 'nonexistent_field'
The validation also makes sure that the given field is relational::
>>> book = Book.objects.select_related('name')
Traceback (most recent call last):
...
FieldError: Non-relational field given in select_related: 'name'
Default ``EmailField.max_length`` increased to 254
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