Fixed nested style preserving issue on TOMLFied

asyncron/fields/toml.py

@@ -2,8 +2,11 @@ from django.db import models
 from django.forms import fields
 
 from asyncron.widgets import Codearea
+from asyncron.utils import rupdate
 
 import tomlkit
+
+
 from tomlkit.exceptions import ParseError
 from tomlkit.toml_document import TOMLDocument
 
@@ -72,7 +75,8 @@ class TOMLField( models.JSONField ):
 		#
 		try:    value_as_toml = tomlkit.loads( value_as_dict.pop('_toml', '') )
 		except: value_as_toml = tomlkit.document()
-		value_as_toml.update( value_as_dict )
+		#We can't just use "update", we have to deep_update or we'll loose any non-shallow comments / styling
+		rupdate( value_as_toml, value_as_dict )
 
 		return value_as_toml
 

asyncron/utils.py

@@ -9,7 +9,14 @@ def rgetattr(obj, attr, *args):
 		return getattr(obj, attr, *args)
 	return functools.reduce(_getattr, [obj] + attr.split('.'))
 
-
+import collections.abc
+def rupdate(d, u): #https://stackoverflow.com/a/3233356/
+	for k, v in u.items():
+		if isinstance(v, collections.abc.Mapping):
+			d[k] = rupdate(d.get(k, {}), v)
+		else:
+			d[k] = v
+	return d
 
 
 #Django keeps giving: exception=OperationalError('the connection is closed')