mediagoblin/db/sql/extratypes.py

   1 from sqlalchemy.types import TypeDecorator, Unicode
   2
   3
   4 class PathTupleWithSlashes(TypeDecorator):
   5     "Represents a Tuple of strings as a slash separated string."
   6
   7     impl = Unicode
   8
   9     def process_bind_param(self, value, dialect):
  10         if value is not None:
  11             assert len(value), "Does not support empty lists"
  12             value = '/'.join(value)
  13         return value
  14
  15     def process_result_value(self, value, dialect):
  16         if value is not None:
  17             value = tuple(value.split('/'))
  18         return value