Make Newsgroup.created_on a datetime.datetime object

lib/nntp/tiny/newsgroup.py

@@ -1,6 +1,27 @@
+import datetime
+
 from nntp.tiny.db import DatabaseTable
 
 class Newsgroup(DatabaseTable):
     name    = 'newsgroup'
     key     = 'id'
-    columns = 'id', 'created_on', 'name', 'description',
+    columns = 'id', 'created_on', 'created_by', 'name', 'description',
+
+    @staticmethod
+    def __from_row__(row):
+        newsgroup = Newsgroup()
+        newsgroup.id          = row['id']
+        newsgroup.created_on  = datetime.datetime.fromisoformat(row['created_on'])
+        newsgroup.created_by  = row['created_by']
+        newsgroup.name        = row['name']
+        newsgroup.description = row['description']
+
+        return newsgroup
+
+    def __values__(self) -> tuple:
+        return (
+            self.created_on.isoformat(),
+            self.created_by,
+            self.name,
+            self.description
+        )