diff --git a/pyproject.toml b/pyproject.toml
index 86cf1dbcfa..3f128c5424 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -117,6 +117,7 @@ line-length = 120
 select = [
   "B",    # flake8-bugbear
   "C4",   # flake8-comprehensions
+  "DJ",   # flake8-django
   "E",    # pycodestyle
   "F",    # pyflakes
   "I",    # isort
diff --git a/rdmo/domain/admin.py b/rdmo/domain/admin.py
index 756e41f4d3..f7800642e7 100644
--- a/rdmo/domain/admin.py
+++ b/rdmo/domain/admin.py
@@ -11,7 +11,16 @@ class AttributeAdminForm(forms.ModelForm):
 
     class Meta:
         model = Attribute
-        fields = '__all__'
+        fields = [
+            'uri',
+            'uri_prefix',
+            'key',
+            'path',
+            'comment',
+            'locked',
+            'editors',
+            'parent',
+        ]
 
     def clean(self):
         AttributeUniqueURIValidator(self.instance)(self.cleaned_data)
diff --git a/rdmo/projects/models/integration.py b/rdmo/projects/models/integration.py
index b8cdc52169..a338c34f45 100644
--- a/rdmo/projects/models/integration.py
+++ b/rdmo/projects/models/integration.py
@@ -9,8 +9,6 @@
 
 class Integration(models.Model):
 
-    objects = IntegrationManager()
-
     project = models.ForeignKey(
         'Project', on_delete=models.CASCADE, related_name='integrations',
         verbose_name=_('Project'),
@@ -21,6 +19,8 @@ class Integration(models.Model):
         help_text=_('The key of the provider for this integration.')
     )
 
+    objects = IntegrationManager()
+
     class Meta:
         ordering = ('project__title', )
         verbose_name = _('Integration')
@@ -29,13 +29,13 @@ class Meta:
     def __str__(self):
         return f'{self.project.title} / {self.provider_key}'
 
+    def get_absolute_url(self):
+        return reverse('project', kwargs={'pk': self.project.pk})
+
     @property
     def provider(self):
         return get_plugin('PROJECT_ISSUE_PROVIDERS', self.provider_key)
 
-    def get_absolute_url(self):
-        return reverse('project', kwargs={'pk': self.project.pk})
-
     def save_options(self, options):
         for field in self.provider.fields:
             try:
diff --git a/rdmo/projects/models/invite.py b/rdmo/projects/models/invite.py
index 1c1c202b79..16986ecbbd 100644
--- a/rdmo/projects/models/invite.py
+++ b/rdmo/projects/models/invite.py
@@ -13,8 +13,6 @@ class Invite(models.Model):
 
     key_salt = 'rdmo.projects.models.invite.Invite'
 
-    objects = InviteManager()
-
     project = models.ForeignKey(
         'Project', on_delete=models.CASCADE, related_name='invites',
         verbose_name=_('Project'),
@@ -45,6 +43,8 @@ class Invite(models.Model):
         help_text=_('The timestamp for this invite.')
     )
 
+    objects = InviteManager()
+
     class Meta:
         ordering = ('timestamp', )
         verbose_name = _('Invite')
diff --git a/rdmo/projects/models/issue.py b/rdmo/projects/models/issue.py
index bfaf95474d..393ef4d9f4 100644
--- a/rdmo/projects/models/issue.py
+++ b/rdmo/projects/models/issue.py
@@ -12,8 +12,6 @@
 
 class Issue(models.Model):
 
-    objects = IssueManager()
-
     ISSUE_STATUS_OPEN = 'open'
     ISSUE_STATUS_IN_PROGRESS = 'in_progress'
     ISSUE_STATUS_CLOSED = 'closed'
@@ -39,6 +37,7 @@ class Issue(models.Model):
         help_text=_('The status for this issue.')
     )
 
+    objects = IssueManager()
     class Meta:
         ordering = ('project__title', )
         verbose_name = _('Issue')
diff --git a/rdmo/projects/models/membership.py b/rdmo/projects/models/membership.py
index f794dff3f9..6e97f086d9 100644
--- a/rdmo/projects/models/membership.py
+++ b/rdmo/projects/models/membership.py
@@ -8,8 +8,6 @@
 
 class Membership(models.Model):
 
-    objects = MembershipManager()
-
     ROLE_CHOICES = (
         ('owner', _('Owner')),
         ('manager', _('Manager')),
@@ -33,6 +31,8 @@ class Membership(models.Model):
         help_text=_('The role for this membership.')
     )
 
+    objects = MembershipManager()
+
     class Meta:
         ordering = ('project__title', )
         verbose_name = _('Membership')
diff --git a/rdmo/tasks/models.py b/rdmo/tasks/models.py
index eef1a0c682..886df5facf 100644
--- a/rdmo/tasks/models.py
+++ b/rdmo/tasks/models.py
@@ -15,8 +15,6 @@
 
 class Task(TranslationMixin, models.Model):
 
-    objects = TaskManager()
-
     uri = models.URLField(
         max_length=800, blank=True,
         verbose_name=_('URI'),
@@ -145,6 +143,8 @@ class Task(TranslationMixin, models.Model):
         help_text=_('Designates whether this task is generally available for projects.')
     )
 
+    objects = TaskManager()
+
     class Meta:
         ordering = ('uri',)
         verbose_name = _('Task')
diff --git a/rdmo/views/models.py b/rdmo/views/models.py
index 4f8561b7fd..1f5098a544 100644
--- a/rdmo/views/models.py
+++ b/rdmo/views/models.py
@@ -16,8 +16,6 @@
 
 class View(models.Model, TranslationMixin):
 
-    objects = ViewManager()
-
     uri = models.URLField(
         max_length=800, blank=True,
         verbose_name=_('URI'),
@@ -125,6 +123,8 @@ class View(models.Model, TranslationMixin):
         help_text=_('Designates whether this view is generally available for projects.')
     )
 
+    objects = ViewManager()
+
     class Meta:
         ordering = ('uri', )
         verbose_name = _('View')