Fix migration evaluation with virtualtime

1 files changed, 23 insertions, 0 deletions

diff --git a/ishtar_common/management/commands/makemigrations.py b/ishtar_common/management/commands/makemigrations.py
new file mode 100644
index 000000000..15309b0d2
--- /dev/null
+++ b/ishtar_common/management/commands/makemigrations.py
@@ -0,0 +1,23 @@
+from datetime import datetime
+
+from django.core.management.commands.makemigrations import Command
+from django.db import models
+
+
+original_deconstruct = models.Field.deconstruct
+
+
+def new_deconstruct(self):
+    """
+    virtualtime can induce bad signature for "now" function replace it
+    explicitly
+    """
+    name, path, args, kwargs = original_deconstruct(self)
+    if 'default' in kwargs and callable(kwargs['default']) and \
+            kwargs['default'].__name__ == 'now':
+        kwargs['default'] = datetime.now
+    return name, path, args, kwargs
+
+
+models.Field.deconstruct = new_deconstruct
+