Restore Schema.TYPE_MAPPING

close #1012

CHANGELOG.rst

@@ -11,6 +11,10 @@ Features:
   now take an additional ``partial`` parameter in the ``_deserialize``
   method.
 
+Bug fixes:
+
+- Restore ``Schema.TYPE_MAPPING``, which was removed in 3.0.0b17 (:issue:`1012`).
+
 3.0.0b18 (2018-10-15)
 +++++++++++++++++++++
 

marshmallow/fields.py

@@ -14,7 +14,7 @@
 from marshmallow import validate, utils, class_registry
 from marshmallow.base import FieldABC, SchemaABC
 from marshmallow.utils import is_collection, missing as missing_
-from marshmallow.compat import basestring, binary_type, text_type
+from marshmallow.compat import basestring, text_type
 from marshmallow.exceptions import ValidationError, StringNotCollectionError
 from marshmallow.validate import Validator
 
@@ -1471,31 +1471,14 @@ class Inferred(Field):
         Users should not need to use this class directly.
     """
 
-    TYPE_MAPPING = {
-        text_type: String,
-        binary_type: String,
-        dt.datetime: DateTime,
-        float: Float,
-        bool: Boolean,
-        tuple: Raw,
-        list: Raw,
-        set: Raw,
-        int: Integer,
-        uuid.UUID: UUID,
-        dt.time: Time,
-        dt.date: Date,
-        dt.timedelta: TimeDelta,
-        decimal.Decimal: Decimal,
-    }
-
     def __init__(self):
         super(Inferred, self).__init__()
         # We memoize the fields to avoid creating and binding new fields
         # every time on serialization.
         self._field_cache = {}
 
     def _serialize(self, value, attr, obj, **kwargs):
-        field_cls = self.TYPE_MAPPING.get(type(value))
+        field_cls = self.root.TYPE_MAPPING.get(type(value))
         if field_cls is None:
             field = super(Inferred, self)
         else:

marshmallow/schema.py

@@ -3,14 +3,17 @@
 from __future__ import absolute_import, unicode_literals
 
 from collections import defaultdict, OrderedDict
+import datetime as dt
+import uuid
+import decimal
 import functools
 import copy
 import inspect
 import json
 import warnings
 
 from marshmallow import base, fields, utils, class_registry, marshalling
-from marshmallow.compat import iteritems, iterkeys, with_metaclass
+from marshmallow.compat import iteritems, iterkeys, with_metaclass, text_type, binary_type
 from marshmallow.exceptions import ValidationError, StringNotCollectionError
 from marshmallow.orderedset import OrderedSet
 from marshmallow.decorators import (
@@ -267,7 +270,24 @@ class Meta:
         `marshmallow.decorators.pre_load` and `marshmallow.decorators.post_dump`.
         `__accessor__` and `__error_handler__` are deprecated. Implement the
         `handle_error` and `get_attribute` methods instead.
-        """
+    """
+    TYPE_MAPPING = {
+        text_type: fields.String,
+        binary_type: fields.String,
+        dt.datetime: fields.DateTime,
+        float: fields.Float,
+        bool: fields.Boolean,
+        tuple: fields.Raw,
+        list: fields.Raw,
+        set: fields.Raw,
+        int: fields.Integer,
+        uuid.UUID: fields.UUID,
+        dt.time: fields.Time,
+        dt.date: fields.Date,
+        dt.timedelta: fields.TimeDelta,
+        decimal.Decimal: fields.Decimal,
+    }
+
     OPTIONS_CLASS = SchemaOpts
 
     class Meta(object):