Merge pull request #111 from MITx/jarv/ungenerated

Jarv/ungenerated

djangoapps/certificates/management/commands/ungenerated_certs.py

+from django.utils.simplejson import dumps
+from django.core.management.base import BaseCommand, CommandError
+from certificates.models import GeneratedCertificate
+class Command(BaseCommand):
+
+    help =  """
+    This command finds all GeneratedCertificate objects that do not have a 
+    certificate generated. These come into being when a user requests a 
+    certificate, or when grade_all_students is called (for pre-generating 
+    certificates).
+    
+    It returns a json formatted list of users and their user ids
+    """
+
+    def handle(self, *args, **options):
+        users = GeneratedCertificate.objects.filter(
+                download_url = None )
+        user_output = [{'user_id':user.user_id, 'name':user.name}
+                for user in users]
+        self.stdout.write(dumps(user_output) + "\n")