Convert Meta classes to new-style classes

common/djangoapps/course_action_state/managers.py

@@ -10,7 +10,7 @@ class CourseActionStateManager(models.Manager):
     An abstract Model Manager class for Course Action State models.
     This abstract class expects child classes to define the ACTION (string) field.
     """
-    class Meta:
+    class Meta(object):
         """Abstract manager class, with subclasses defining the ACTION (string) field."""
         abstract = True
 

common/djangoapps/course_action_state/models.py

@@ -21,7 +21,7 @@ class CourseActionState(models.Model):
     For example: course copying (reruns), import, export, and validation.
     """
 
-    class Meta:
+    class Meta(object):
         """
         For performance reasons, we disable "concrete inheritance", by making the Model base class abstract.
         With the "abstract base class" inheritance model, tables are only created for derived models, not for
@@ -77,7 +77,7 @@ class CourseActionUIState(CourseActionState):
     """
     An abstract django model that is a sub-class of CourseActionState with additional fields related to UI.
     """
-    class Meta:
+    class Meta(object):
         """
         See comment in CourseActionState on disabling "concrete inheritance".
         """
@@ -101,7 +101,7 @@ class CourseRerunState(CourseActionUIState):
     """
     A concrete django model for maintaining state specifically for the Action Course Reruns.
     """
-    class Meta:
+    class Meta(object):
         """
         Set the (destination) course_key field to be unique for the rerun action
         Although multiple reruns can be in progress simultaneously for a particular source course_key,

common/djangoapps/course_modes/admin.py

@@ -16,7 +16,7 @@ from util.date_utils import get_time_display
 
 class CourseModeForm(forms.ModelForm):
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = CourseMode
 
     COURSE_MODE_SLUG_CHOICES = (

common/djangoapps/course_modes/models.py

@@ -82,7 +82,7 @@ class CourseMode(models.Model):
     # Modes that allow a student to earn credit with a university partner
     CREDIT_MODES = [CREDIT_MODE]
 
-    class Meta:
+    class Meta(object):
         """ meta attributes of this model """
         unique_together = ('course_id', 'mode_slug', 'currency')
 

common/djangoapps/django_comment_common/models.py

@@ -57,7 +57,7 @@ class Role(models.Model):
     users = models.ManyToManyField(User, related_name="roles")
     course_id = CourseKeyField(max_length=255, blank=True, db_index=True)
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         # use existing table that was originally created from django_comment_client app
         db_table = 'django_comment_client_role'
 
@@ -99,7 +99,7 @@ class Permission(models.Model):
     name = models.CharField(max_length=30, null=False, blank=False, primary_key=True)
     roles = models.ManyToManyField(Role, related_name="permissions")
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         # use existing table that was originally created from django_comment_client app
         db_table = 'django_comment_client_permission'
 

common/djangoapps/embargo/forms.py

@@ -25,7 +25,7 @@ class RestrictedCourseForm(forms.ModelForm):
     error message instead.
 
     """
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         model = RestrictedCourse
 
     def clean_course_key(self):
@@ -58,7 +58,7 @@ class RestrictedCourseForm(forms.ModelForm):
 class IPFilterForm(forms.ModelForm):
     """Form validating entry of IP addresses"""
 
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         model = IPFilter
 
     def _is_valid_ip(self, address):

common/djangoapps/embargo/models.py

@@ -379,7 +379,7 @@ class Country(models.Model):
             code=unicode(self.country)
         )
 
-    class Meta:
+    class Meta(object):
         """Default ordering is ascending by country code """
         ordering = ['country']
 
@@ -522,7 +522,7 @@ class CountryAccessRule(models.Model):
         cache.delete(cache_key)
         log.info("Invalidated country access list for course %s", course_key)
 
-    class Meta:
+    class Meta(object):
         """a course can be added with either black or white list.  """
         unique_together = (
             # This restriction ensures that a country is on
@@ -646,7 +646,7 @@ class CourseAccessRuleHistory(models.Model):
             else:
                 CourseAccessRuleHistory.save_snapshot(restricted_course)
 
-    class Meta:  # pylint: disable=missing-docstring,old-style-class
+    class Meta(object):  # pylint: disable=missing-docstring
         get_latest_by = 'timestamp'
 
 

common/djangoapps/external_auth/models.py

@@ -14,7 +14,7 @@ from django.contrib.auth.models import User
 
 
 class ExternalAuthMap(models.Model):
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = (('external_id', 'external_domain'), )
     external_id = models.CharField(max_length=255, db_index=True)
     external_domain = models.CharField(max_length=255, db_index=True)

common/djangoapps/student/admin.py

@@ -20,7 +20,7 @@ from opaque_keys import InvalidKeyError
 
 class CourseAccessRoleForm(forms.ModelForm):
     """Form for adding new Course Access Roles view the Django Admin Panel."""
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = CourseAccessRole
 
     email = forms.EmailField(required=True)
@@ -123,7 +123,7 @@ class CourseAccessRoleAdmin(admin.ModelAdmin):
 class LinkedInAddToProfileConfigurationAdmin(admin.ModelAdmin):
     """Admin interface for the LinkedIn Add to Profile configuration. """
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = LinkedInAddToProfileConfiguration
 
     # Exclude deprecated fields

common/djangoapps/student/models.py

@@ -216,7 +216,7 @@ class UserProfile(models.Model):
     MITx fall prototype.
     """
 
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         db_table = "auth_userprofile"
 
     # CRITICAL TODO/SECURITY
@@ -436,7 +436,7 @@ class Registration(models.Model):
         registration profile is created when the user creates an
         account, but that account is inactive. Once the user clicks
         on the activation key, it becomes active. '''
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         db_table = "auth_registration"
 
     user = models.ForeignKey(User, unique=True)
@@ -846,7 +846,7 @@ class CourseEnrollment(models.Model):
 
     objects = CourseEnrollmentManager()
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = (('user', 'course_id'),)
         ordering = ('user', 'course_id')
 
@@ -1407,7 +1407,7 @@ class CourseEnrollmentAllowed(models.Model):
 
     created = models.DateTimeField(auto_now_add=True, null=True, db_index=True)
 
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = (('email', 'course_id'),)
 
     def __unicode__(self):
@@ -1444,7 +1444,7 @@ class CourseAccessRole(models.Model):
     course_id = CourseKeyField(max_length=255, db_index=True, blank=True)
     role = models.CharField(max_length=64, db_index=True)
 
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = ('user', 'org', 'course_id', 'role')
 
     @property
@@ -1835,7 +1835,7 @@ class LanguageProficiency(models.Model):
     /edx-platform/openedx/core/djangoapps/user_api/accounts/views.py or its associated api method
     (update_account_settings) so that the events are emitted.
     """
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = (('code', 'user_profile'),)
 
     user_profile = models.ForeignKey(UserProfile, db_index=True, related_name='language_proficiencies')

common/djangoapps/track/backends/django.py

@@ -46,7 +46,7 @@ class TrackingLog(models.Model):
     time = models.DateTimeField('event time')
     host = models.CharField(max_length=64, blank=True)
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         app_label = 'track'
         db_table = 'track_trackinglog'
 

lms/djangoapps/ccx/models.py

@@ -150,7 +150,7 @@ class CcxFieldOverride(models.Model):
     location = LocationKeyField(max_length=255, db_index=True)
     field = models.CharField(max_length=255)
 
-    class Meta:  # pylint: disable=missing-docstring,old-style-class
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = (('ccx', 'location', 'field'),)
 
     value = models.TextField(default='null')

lms/djangoapps/certificates/models.py

@@ -241,7 +241,7 @@ class ExampleCertificateSet(TimeStampedModel):
     """
     course_key = CourseKeyField(max_length=255, db_index=True)
 
-    class Meta:  # pylint: disable=missing-docstring, old-style-class
+    class Meta(object):  # pylint: disable=missing-docstring
         get_latest_by = 'created'
 
     @classmethod
@@ -498,7 +498,7 @@ class CertificateGenerationCourseSetting(TimeStampedModel):
     course_key = CourseKeyField(max_length=255, db_index=True)
     enabled = models.BooleanField(default=False)
 
-    class Meta:  # pylint: disable=missing-docstring, old-style-class
+    class Meta(object):  # pylint: disable=missing-docstring
         get_latest_by = 'created'
 
     @classmethod

lms/djangoapps/shoppingcart/models.py

@@ -1163,7 +1163,7 @@ class InvoiceHistory(models.Model):
         elif hasattr(instance, 'invoice'):
             InvoiceHistory.save_invoice_snapshot(instance.invoice)
 
-    class Meta:  # pylint: disable=missing-docstring,old-style-class
+    class Meta(object):  # pylint: disable=missing-docstring
         get_latest_by = "timestamp"
 
 

lms/djangoapps/verify_student/models.py

@@ -895,7 +895,7 @@ class VerificationCheckpoint(models.Model):
     checkpoint_location = models.CharField(max_length=255)
     photo_verification = models.ManyToManyField(SoftwareSecurePhotoVerification)
 
-    class Meta:  # pylint: disable=missing-docstring, old-style-class
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = ('course_id', 'checkpoint_location')
 
     def __unicode__(self):
@@ -1089,7 +1089,7 @@ class SkippedReverification(models.Model):
     checkpoint = models.ForeignKey(VerificationCheckpoint, related_name="skipped_checkpoint")
     created_at = models.DateTimeField(auto_now_add=True)
 
-    class Meta:  # pylint: disable=missing-docstring, old-style-class
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = (('user', 'course_id'),)
 
     @classmethod

openedx/core/djangoapps/course_groups/models.py

@@ -18,7 +18,7 @@ class CourseUserGroup(models.Model):
     which may be treated specially.  For example, a user can be in at most one cohort per
     course, and cohorts are used to split up the forums by group.
     """
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = (('name', 'course_id'), )
 
     name = models.CharField(max_length=255,

openedx/core/djangoapps/user_api/accounts/serializers.py

@@ -15,7 +15,7 @@ class LanguageProficiencySerializer(serializers.ModelSerializer):
     Class that serializes the LanguageProficiency model for account
     information.
     """
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = LanguageProficiency
         fields = ("code",)
 
@@ -36,7 +36,7 @@ class AccountUserSerializer(serializers.HyperlinkedModelSerializer, ReadOnlyFiel
     """
     Class that serializes the portion of User model needed for account information.
     """
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = User
         fields = ("username", "email", "date_joined", "is_active")
         read_only_fields = ("username", "email", "date_joined", "is_active")
@@ -51,7 +51,7 @@ class AccountLegacyProfileSerializer(serializers.HyperlinkedModelSerializer, Rea
     requires_parental_consent = serializers.SerializerMethodField("get_requires_parental_consent")
     language_proficiencies = LanguageProficiencySerializer(many=True, allow_add_remove=True, required=False)
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = UserProfile
         fields = (
             "name", "gender", "goals", "year_of_birth", "level_of_education", "country",

openedx/core/djangoapps/user_api/models.py

@@ -24,7 +24,7 @@ class UserPreference(models.Model):
     key = models.CharField(max_length=255, db_index=True, validators=[RegexValidator(KEY_REGEX)])
     value = models.TextField()
 
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = ("user", "key")
 
     @classmethod
@@ -93,7 +93,7 @@ class UserCourseTag(models.Model):
     course_id = CourseKeyField(max_length=255, db_index=True)
     value = models.TextField()
 
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         unique_together = ("user", "course_id", "key")
 
 
@@ -108,6 +108,6 @@ class UserOrgTag(TimeStampedModel):
     org = models.CharField(max_length=255, db_index=True)
     value = models.TextField()
 
-    class Meta:
+    class Meta(object):
         """ Meta class for defining unique constraints. """
         unique_together = ("user", "org", "key")

openedx/core/djangoapps/user_api/serializers.py

@@ -16,7 +16,7 @@ class UserSerializer(serializers.HyperlinkedModelSerializer):
     def get_preferences(self, user):
         return dict([(pref.key, pref.value) for pref in user.preferences.all()])
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = User
         # This list is the minimal set required by the notification service
         fields = ("id", "url", "email", "name", "username", "preferences")
@@ -26,7 +26,7 @@ class UserSerializer(serializers.HyperlinkedModelSerializer):
 class UserPreferenceSerializer(serializers.HyperlinkedModelSerializer):
     user = UserSerializer()
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = UserPreference
         depth = 1
 
@@ -36,7 +36,7 @@ class RawUserPreferenceSerializer(serializers.ModelSerializer):
     """
     user = serializers.PrimaryKeyRelatedField()
 
-    class Meta:
+    class Meta(object):  # pylint: disable=missing-docstring
         model = UserPreference
         depth = 1