Allow only 5 maintainers, one needs to be your own + help text

whoisdb/forms.py

@@ -60,22 +60,18 @@ class MntFormMixin(object):
 		if not hasattr(self, "_create"):
 			self._create = not (instance and instance.pk)
 
-		mntWhens = [When(auth=self._user, then=2)]
-		if not self._create:
-			mntWhens.append(When(handle__in=instance.mnt_by.all().values_list("handle"), then=1))
-		mntQs = Maintainer.objects.annotate(card=Case(*mntWhens, default=0, output_field=IntegerField())).order_by("-card")
-		# NOTE: We cannot use distinct on a field as some db backends don't support it
-		#self.fields["mnt_by"].queryset = mntQs.distinct("handle")
+		mntQs = orderQueryset(Maintainer.objects.all(), Q(auth=self._user), Q(pk__in=instance.mnt_by.all()) if not self._create else None)
 		self.fields["mnt_by"].queryset = mntQs
 
 		if "mnt_lower" in self.fields:
 			self.fields["mnt_lower"].queryset = mntQs
 
-
 	def clean(self):
 		cleaned_data = super(MntFormMixin, self).clean()
 
-		if not self.errors and self._create:
+		if not self.errors:
+			if self._create:
+				# at least one own mnt on creation
 				mnts = self._user.maintainer_set.all()
 
 				for mnt in cleaned_data['mnt_by']:
@@ -84,6 +80,12 @@ class MntFormMixin(object):
 				else:
 					raise forms.ValidationError("On object creation at least one maintainer needs to be under your control")
 
+			if cleaned_data['mnt_by'].count() > 5 or "mnt_lower" in self.fields and cleaned_data['mnt_lower'].count() > 5:
+				raise forms.ValidationError("Currently only 5 MNTs per object allowed. If you need more ask @ irc/rrequest and state your use case")
+
+		return cleaned_data
+
+
 class MntForm(WhoisObjectFormMixin, forms.ModelForm):
 	class Meta:
 		model = Maintainer

whoisdb/models.py

@@ -116,7 +116,7 @@ class MntdObject(WhoisObject):
 	class Meta:
 		abstract = True
 
-	mnt_by = models.ManyToManyField(Maintainer)
+	mnt_by = models.ManyToManyField(Maintainer, help_text="You can select multiple maintainers here")
 
 	def canEdit(self, user):
 		if not hasattr(user, "maintainer_set"):