Updated SQL Json support

ref-test/app/tools/forms.py

@@ -9,24 +9,6 @@ from wtforms.validators import ValidationError
 import json
 from sqlalchemy.ext import mutable
 
-class JsonEncodedDict(db.TypeDecorator):
-    """Enables JSON storage by encoding and decoding on the fly."""
-    impl = db.Text
-
-    def process_bind_param(self, value, dialect):
-        if value is None:
-            return '{}'
-        else:
-            return json.dumps(value)
-
-    def process_result_value(self, value, dialect):
-        if value is None:
-            return {}
-        else:
-            return json.loads(value)
-
-mutable.MutableDict.associate_with(JsonEncodedDict)
-
 def value(min:int=0, max:int=None):
     if not max:
         message = f'Value must be greater than {min}.'