Update discussion setup instructions to clarify that you need to specify a

course id for seed_permissions_roles, and also the script itself to tell you that.

doc/discussion.md

@@ -9,7 +9,7 @@ If you haven't done so already:
     brew install mongodb
 
 Make sure that you have mongodb running. You can simply open a new terminal tab and type:
- 
+
     mongod
 
 ## Installing elasticsearch
@@ -72,9 +72,9 @@ For convenience, add the following environment variables to the terminal (assumi
     export DJANGO_SETTINGS_MODULE=lms.envs.dev
     export PYTHONPATH=.
 
-Now initialzie roles and permissions:
+Now initialzie roles and permissions, providing a course id eg.:
 
-    django-admin.py seed_permissions_roles
+    django-admin.py seed_permissions_roles "MITx/6.002x/2012_Fall"
 
 To assign yourself as a moderator, use the following command (assuming your username is "test", and the course id is "MITx/6.002x/2012_Fall"):
 

lms/djangoapps/django_comment_client/management/commands/seed_permissions_roles.py

@@ -7,8 +7,10 @@ class Command(BaseCommand):
     help = 'Seed default permisssions and roles'
 
     def handle(self, *args, **options):
-        if len(args) != 1:
-            raise CommandError("The number of arguments does not match. ")
+        if len(args) == 0:
+            raise CommandError("Please provide a course id")
+        if len(args) > 1:
+            raise CommandError("Too many arguments")
         course_id = args[0]
         administrator_role = Role.objects.get_or_create(name="Administrator", course_id=course_id)[0]
         moderator_role = Role.objects.get_or_create(name="Moderator", course_id=course_id)[0]