refs #938. Adds management command for deleting web harvests for a co…

…llection.

sfm/ui/management/commands/deletewebharvests.py

@@ -0,0 +1,14 @@
+from django.core.management.base import BaseCommand
+from ui.models import Harvest
+
+
+class Command(BaseCommand):
+    help = 'Delete web harvests.'
+
+    def add_arguments(self, parser):
+        parser.add_argument('collection_id')
+
+    def handle(self, *args, **options):
+        for harvest in Harvest.objects.filter(harvest_type='web', collection__collection_id=options['collection_id']):
+            self.stdout.write('Deleting {}'.format(harvest.harvest_id))
+            harvest.delete()