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Fixed #12237 -- Improved the error message for m2m fields with an explicit through model being listed in admin fieldsets. Thanks to Pyth for the report and Ramiro Morales for the patch. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11744 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee 2009-11-18 07:44:06 +00:00
parent cd0d7e676d
commit bb4062d53b
2 changed files with 31 additions and 5 deletions
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20
django/contrib/admin/validation.py
View File

@ -198,7 +198,9 @@ def validate_base(cls, model):
check_formfield(cls, model, opts, 'fields', field)
f = get_field(cls, model, opts, 'fields', field)
if isinstance(f, models.ManyToManyField) and not f.rel.through._meta.auto_created:
raise ImproperlyConfigured("'%s.fields' can't include the ManyToManyField field '%s' because '%s' manually specifies a 'through' model." % (cls.__name__, field, field))
raise ImproperlyConfigured("'%s.fields' can't include the ManyToManyField "
"field '%s' because '%s' manually specifies "
"a 'through' model." % (cls.__name__, field, field))
if cls.fieldsets:
raise ImproperlyConfigured('Both fieldsets and fields are specified in %s.' % cls.__name__)
if len(cls.fields) > len(set(cls.fields)):
@ -217,11 +219,23 @@ def validate_base(cls, model):
raise ImproperlyConfigured("'fields' key is required in "
"%s.fieldsets[%d][1] field options dict."
% (cls.__name__, idx))
for field in fieldset[1]['fields']:
check_formfield(cls, model, opts, "fieldsets[%d][1]['fields']" % idx, field)
try:
f = opts.get_field(field)
if isinstance(f, models.ManyToManyField) and not f.rel.through._meta.auto_created:
raise ImproperlyConfigured("'%s.fieldsets[%d][1]['fields']' "
"can't include the ManyToManyField field '%s' because "
"'%s' manually specifies a 'through' model." % (
cls.__name__, idx, field, field))
except models.FieldDoesNotExist:
# If we can't find a field on the model that matches,
# it could be an extra field on the form.
pass
flattened_fieldsets = flatten_fieldsets(cls.fieldsets)
if len(flattened_fieldsets) > len(set(flattened_fieldsets)):
raise ImproperlyConfigured('There are duplicate field(s) in %s.fieldsets' % cls.__name__)
for field in flattened_fieldsets:
check_formfield(cls, model, opts, "fieldsets[%d][1]['fields']" % idx, field)
# form
if hasattr(cls, 'form') and not issubclass(cls.form, BaseModelForm):

16
tests/regressiontests/admin_validation/models.py
View File

@ -108,8 +108,9 @@ Exception: <class 'regressiontests.admin_validation.models.TwoAlbumFKAndAnE'> ha
>>> validate_inline(TwoAlbumFKAndAnEInline, None, Album)
# Regression test for #12203 - Fail more gracefully when a M2M field that
# specifies the 'through' option is included in the 'fields' ModelAdmin option.
# Regression test for #12203/#12237 - Fail more gracefully when a M2M field that
# specifies the 'through' option is included in the 'fields' or the 'fieldsets'
# ModelAdmin options.
>>> class BookAdmin(admin.ModelAdmin):
... fields = ['authors']
@ -119,6 +120,17 @@ Traceback (most recent call last):
...
ImproperlyConfigured: 'BookAdmin.fields' can't include the ManyToManyField field 'authors' because 'authors' manually specifies a 'through' model.
>>> class FieldsetBookAdmin(admin.ModelAdmin):
... fieldsets = (
... ('Header 1', {'fields': ('name',)}),
... ('Header 2', {'fields': ('authors',)}),
... )
>>> validate(FieldsetBookAdmin, Book)
Traceback (most recent call last):
...
ImproperlyConfigured: 'FieldsetBookAdmin.fieldsets[1][1]['fields']' can't include the ManyToManyField field 'authors' because 'authors' manually specifies a 'through' model.
# Regression test for #12209 -- If the explicitly provided through model
# is specified as a string, the admin should still be able use
# Model.m2m_field.through