Initial push to public repo

netbox/utilities/fields.py

@@ -0,0 +1,14 @@
+from django.db import models
+
+
+class NullableCharField(models.CharField):
+    description = "Stores empty values as NULL rather than ''"
+    #__metaclass__ = models.SubfieldBase
+
+    def to_python(self, value):
+        if isinstance(value, models.CharField):
+            return value
+        return value or ''
+
+    def get_prep_value(self, value):
+        return value or None