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Code Issues 32 Releases Wiki Activity

Fixed #7042 -- The management validation command nows alerts users to the

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presence (and incorrectness) of unique=True on ManyToManyFields. This has never
worked and generates invalid SQL. Now it's raised as an explicit error during
validation. Thanks to clamothe for the patch.

Still needs a docs change to make this clear, but that goes to the docs
refactor branch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@8488 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Malcolm Tredinnick
2008-08-23 16:56:41 +00:00
parent 0511435a33
commit 943c28a4c6
2 changed files with 15 additions and 5 deletions
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9
django/core/management/validation.py
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@@ -99,7 +99,7 @@ def get_validation_errors(outfile, app=None):
if r.get_accessor_name() == rel_query_name:
e.add(opts, "Reverse query name for field '%s' clashes with related field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name))
seen_intermediary_signatures = []
seen_intermediary_signatures = []
for i, f in enumerate(opts.local_many_to_many):
# Check to see if the related m2m field will clash with any
# existing fields, m2m fields, m2m related objects or related
@@ -110,6 +110,11 @@ def get_validation_errors(outfile, app=None):
# so skip the next section
if isinstance(f.rel.to, (str, unicode)):
continue
# Check that the field is not set to unique. ManyToManyFields do not support unique.
if f.unique:
e.add(opts, "ManyToManyFields cannot be unique. Remove the unique argument on '%s'." % f.name)
if getattr(f.rel, 'through', None) is not None:
if hasattr(f.rel, 'through_model'):
from_model, to_model = cls, f.rel.to
@@ -152,7 +157,7 @@ def get_validation_errors(outfile, app=None):
e.add(opts, "'%s' has a manually-defined m2m relation through model %s, which does not have foreign keys to %s and %s" % (f.name, f.rel.through, f.rel.to._meta.object_name, cls._meta.object_name))
else:
e.add(opts, "'%s' specifies an m2m relation through model %s, which has not been installed" % (f.name, f.rel.through))
rel_opts = f.rel.to._meta
rel_name = RelatedObject(f.rel.to, cls, f).get_accessor_name()
rel_query_name = f.related_query_name()