Corrige conversao de nulo para vazio em char fields e text fields

scripts/convert_null_to_empty_in_all_char_fields.py

@@ -1,11 +1,13 @@
 from django.db import models
 
-from sapl.utils import sapl_appconfs
+from django.apps import apps
+from sapl.settings import SAPL_APPS
 
 
 def convert_null_to_empty():
-    for app in sapl_appconfs:
-        for model in app.get_models():
+    for name in SAPL_APPS:
+        for model in apps.get_app_config(name).get_models():
+            try:
                 print('Convertendo null p/ vazio. model [%s]'
                       % model._meta.model_name)
                 char_fields = [f for f in model._meta.fields
@@ -16,3 +18,5 @@ def convert_null_to_empty():
                         if getattr(obj, field.name) is None:
                             setattr(obj, field.name, '')
                     obj.save()
+            except Exception as e:
+                print(e)