Add script

ci/check_migration_files.py

@@ -0,0 +1,29 @@
+""" Check that there are no database migration files which have not been committed. """
+
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import sys
+import subprocess
+
+cmd = ['git', 'ls-files', '--exclude-standard', '--others']
+
+proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+
+out, err = proc.communicate()
+
+migrations = []
+
+for line in str(out.decode()).split('\n'):
+    if '/migrations/' in line:
+        migrations.append(line)
+
+if len(migrations) == 0:
+    sys.exit(0)
+
+print("There are {n} unstaged migration files:".format(n=len(migrations)))
+
+for m in migrations:
+    print(" - {m}".format(m=m))
+
+sys.exit(len(migrations))