mirror of https://github.com/django/django.git
Fixed #19806 -- Ensure that content types and permissions aren't created for swapped models.
Thanks to rizumu for the report.
This commit is contained in:
Russell Keith-Magee
parent
0a0a0d66b3
commit
c8985a8a73
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@ -5,6 +5,7 @@ from django.utils.encoding import smart_text
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from django.utils import six
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from django.utils.six.moves import input
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def update_contenttypes(app, created_models, verbosity=2, db=DEFAULT_DB_ALIAS, **kwargs):
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"""
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Creates content types for models in the given app, removing any model
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@ -77,6 +78,7 @@ If you're unsure, answer 'no'.
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if verbosity >= 2:
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print("Stale content types remain.")
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def update_all_contenttypes(verbosity=2, **kwargs):
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for app in get_apps():
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update_contenttypes(app, None, verbosity, **kwargs)
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@ -35,7 +35,10 @@ def get_validation_errors(outfile, app=None):
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for (app_name, error) in get_app_errors().items():
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e.add(app_name, error)
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for cls in models.get_models(app):
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inc = set(models.get_models(app, include_swapped=True))
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no_inc = set(models.get_models(app))
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for cls in models.get_models(app, include_swapped=True):
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opts = cls._meta
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# Check swappable attribute.
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@ -138,16 +141,17 @@ def get_validation_errors(outfile, app=None):
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# fields, m2m fields, m2m related objects or related objects
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if f.rel:
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if f.rel.to not in models.get_models():
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e.add(opts, "'%s' has a relation with model %s, which has either not been installed or is abstract." % (f.name, f.rel.to))
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# If the related model is swapped, provide a hint;
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# otherwise, the model just hasn't been installed.
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if not isinstance(f.rel.to, six.string_types) and f.rel.to._meta.swapped:
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e.add(opts, "'%s' defines a relation with the model '%s.%s', which has been swapped out. Update the relation to point at settings.%s." % (f.name, f.rel.to._meta.app_label, f.rel.to._meta.object_name, f.rel.to._meta.swappable))
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else:
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e.add(opts, "'%s' has a relation with model %s, which has either not been installed or is abstract." % (f.name, f.rel.to))
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# it is a string and we could not find the model it refers to
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# so skip the next section
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if isinstance(f.rel.to, six.string_types):
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continue
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# Make sure the model we're related hasn't been swapped out
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if f.rel.to._meta.swapped:
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e.add(opts, "'%s' defines a relation with the model '%s.%s', which has been swapped out. Update the relation to point at settings.%s." % (f.name, f.rel.to._meta.app_label, f.rel.to._meta.object_name, f.rel.to._meta.swappable))
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# Make sure the related field specified by a ForeignKey is unique
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if not f.rel.to._meta.get_field(f.rel.field_name).unique:
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e.add(opts, "Field '%s' under model '%s' must have a unique=True constraint." % (f.rel.field_name, f.rel.to.__name__))
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@ -184,16 +188,18 @@ def get_validation_errors(outfile, app=None):
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# existing fields, m2m fields, m2m related objects or related
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# objects
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if f.rel.to not in models.get_models():
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e.add(opts, "'%s' has an m2m relation with model %s, which has either not been installed or is abstract." % (f.name, f.rel.to))
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# If the related model is swapped, provide a hint;
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# otherwise, the model just hasn't been installed.
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if not isinstance(f.rel.to, six.string_types) and f.rel.to._meta.swapped:
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e.add(opts, "'%s' defines a relation with the model '%s.%s', which has been swapped out. Update the relation to point at settings.%s." % (f.name, f.rel.to._meta.app_label, f.rel.to._meta.object_name, f.rel.to._meta.swappable))
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else:
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e.add(opts, "'%s' has an m2m relation with model %s, which has either not been installed or is abstract." % (f.name, f.rel.to))
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# it is a string and we could not find the model it refers to
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# so skip the next section
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if isinstance(f.rel.to, six.string_types):
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continue
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# Make sure the model we're related hasn't been swapped out
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if f.rel.to._meta.swapped:
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e.add(opts, "'%s' defines a relation with the model '%s.%s', which has been swapped out. Update the relation to point at settings.%s." % (f.name, f.rel.to._meta.app_label, f.rel.to._meta.object_name, f.rel.to._meta.swappable))
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# Check that the field is not set to unique. ManyToManyFields do not support unique.
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if f.unique:
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e.add(opts, "ManyToManyFields cannot be unique. Remove the unique argument on '%s'." % f.name)
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@ -24,24 +24,24 @@ class AppCache(object):
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# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531.
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__shared_state = dict(
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# Keys of app_store are the model modules for each application.
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app_store = SortedDict(),
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app_store=SortedDict(),
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# Mapping of installed app_labels to model modules for that app.
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app_labels = {},
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app_labels={},
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# Mapping of app_labels to a dictionary of model names to model code.
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# May contain apps that are not installed.
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app_models = SortedDict(),
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app_models=SortedDict(),
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# Mapping of app_labels to errors raised when trying to import the app.
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app_errors = {},
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app_errors={},
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# -- Everything below here is only used when populating the cache --
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loaded = False,
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handled = {},
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postponed = [],
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nesting_level = 0,
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_get_models_cache = {},
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loaded=False,
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handled={},
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postponed=[],
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nesting_level=0,
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_get_models_cache={},
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)
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def __init__(self):
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@ -167,7 +167,7 @@ class AppCache(object):
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def get_models(self, app_mod=None,
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include_auto_created=False, include_deferred=False,
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only_installed=True):
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only_installed=True, include_swapped=False):
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"""
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Given a module containing models, returns a list of the models.
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Otherwise returns a list of all installed models.
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@ -179,8 +179,16 @@ class AppCache(object):
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By default, models created to satisfy deferred attribute
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queries are *not* included in the list of models. However, if
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you specify include_deferred, they will be.
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By default, models that aren't part of installed apps will *not*
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be included in the list of models. However, if you specify
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only_installed=False, they will be.
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By default, models that have been swapped out will *not* be
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included in the list of models. However, if you specify
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include_swapped, they will be.
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"""
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cache_key = (app_mod, include_auto_created, include_deferred, only_installed)
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cache_key = (app_mod, include_auto_created, include_deferred, only_installed, include_swapped)
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try:
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return self._get_models_cache[cache_key]
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except KeyError:
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@ -203,7 +211,8 @@ class AppCache(object):
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model_list.extend(
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model for model in app.values()
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if ((not model._deferred or include_deferred) and
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(not model._meta.auto_created or include_auto_created))
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(not model._meta.auto_created or include_auto_created) and
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(not model._meta.swapped or include_swapped))
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)
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self._get_models_cache[cache_key] = model_list
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return model_list
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@ -0,0 +1,15 @@
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from django.db import models
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class Article(models.Model):
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title = models.CharField(max_length=100)
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publication_date = models.DateField()
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class Meta:
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swappable = 'TEST_ARTICLE_MODEL'
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class AlternateArticle(models.Model):
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title = models.CharField(max_length=100)
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publication_date = models.DateField()
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byline = models.CharField(max_length=100)
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@ -0,0 +1,46 @@
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from __future__ import absolute_import, unicode_literals
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from django.utils.six import StringIO
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from django.contrib.auth.models import Permission
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from django.contrib.contenttypes.models import ContentType
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from django.core import management
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from django.db.models.loading import cache
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from django.test import TestCase
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from django.test.utils import override_settings
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class SwappableModelTests(TestCase):
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def setUp(self):
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# This test modifies the installed apps, so we need to make sure
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# we're not dealing with a cached app list.
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cache._get_models_cache.clear()
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def tearDown(self):
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# By fiddling with swappable models, we alter the installed models
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# cache, so flush it to make sure there are no side effects.
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cache._get_models_cache.clear()
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@override_settings(TEST_ARTICLE_MODEL='swappable_models.AlternateArticle')
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def test_generated_data(self):
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"Permissions and content types are not created for a swapped model"
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# Delete all permissions and content_types
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Permission.objects.all().delete()
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ContentType.objects.all().delete()
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# Re-run syncdb. This will re-build the permissions and content types.
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new_io = StringIO()
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management.call_command('syncdb', load_initial_data=False, interactive=False, stdout=new_io)
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# Check that content types and permissions exist for the swapped model,
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# but not for the swappable model.
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apps_models = [(p.content_type.app_label, p.content_type.model)
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for p in Permission.objects.all()]
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self.assertIn(('swappable_models', 'alternatearticle'), apps_models)
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self.assertNotIn(('swappable_models', 'article'), apps_models)
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apps_models = [(ct.app_label, ct.model)
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for ct in ContentType.objects.all()]
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self.assertIn(('swappable_models', 'alternatearticle'), apps_models)
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self.assertNotIn(('swappable_models', 'article'), apps_models)
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