add command to remove tiles not associated with a cell

combo_plugin_gnm/management/commands/gnm_kill_zombie_tiles.py

@@ -0,0 +1,27 @@
+# combo-plugin-gnm - Combo GNM plugin
+# Copyright (C) 2017-2018  Entr'ouvert
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from django.core.management.base import BaseCommand
+from django.utils.timezone import now, timedelta
+
+from combo.apps.dashboard.models import Tile
+
+
+class Command(BaseCommand):
+    def handle(self, *args, **options):
+        for tile in Tile.objects.all():
+            if not tile.cell:
+                tile.delete()