Coerce dates etc to ISO_8601 in seralizer, by default.

rest_framework/fields.py

@@ -431,10 +431,12 @@ class DecimalField(Field):
         'max_whole_digits': _('Ensure that there are no more than {max_whole_digits} digits before the decimal point.')
     }
 
-    def __init__(self, max_digits, decimal_places, coerce_to_string=True, max_value=None, min_value=None, **kwargs):
+    coerce_to_string = api_settings.COERCE_DECIMAL_TO_STRING
+
+    def __init__(self, max_digits, decimal_places, coerce_to_string=None, max_value=None, min_value=None, **kwargs):
         self.max_digits = max_digits
         self.decimal_places = decimal_places
-        self.coerce_to_string = coerce_to_string
+        self.coerce_to_string = coerce_to_string if (coerce_to_string is not None) else self.coerce_to_string
         super(DecimalField, self).__init__(**kwargs)
         if max_value is not None:
             self.validators.append(validators.MaxValueValidator(max_value))
@@ -510,12 +512,12 @@ class DateField(Field):
     default_error_messages = {
         'invalid': _('Date has wrong format. Use one of these formats instead: {format}'),
     }
-    input_formats = api_settings.DATE_INPUT_FORMATS
     format = api_settings.DATE_FORMAT
+    input_formats = api_settings.DATE_INPUT_FORMATS
 
-    def __init__(self, input_formats=None, format=None, *args, **kwargs):
-        self.input_formats = input_formats if input_formats is not None else self.input_formats
+    def __init__(self, format=None, input_formats=None, *args, **kwargs):
         self.format = format if format is not None else self.format
+        self.input_formats = input_formats if input_formats is not None else self.input_formats
         super(DateField, self).__init__(*args, **kwargs)
 
     def to_internal_value(self, value):
@@ -569,12 +571,12 @@ class DateTimeField(Field):
     default_error_messages = {
         'invalid': _('Datetime has wrong format. Use one of these formats instead: {format}'),
     }
-    input_formats = api_settings.DATETIME_INPUT_FORMATS
     format = api_settings.DATETIME_FORMAT
+    input_formats = api_settings.DATETIME_INPUT_FORMATS
 
-    def __init__(self, input_formats=None, format=None, *args, **kwargs):
-        self.input_formats = input_formats if input_formats is not None else self.input_formats
+    def __init__(self, format=None, input_formats=None, *args, **kwargs):
         self.format = format if format is not None else self.format
+        self.input_formats = input_formats if input_formats is not None else self.input_formats
         super(DateTimeField, self).__init__(*args, **kwargs)
 
     def to_internal_value(self, value):
@@ -634,12 +636,12 @@ class TimeField(Field):
     default_error_messages = {
         'invalid': _('Time has wrong format. Use one of these formats instead: {format}'),
     }
-    input_formats = api_settings.TIME_INPUT_FORMATS
     format = api_settings.TIME_FORMAT
+    input_formats = api_settings.TIME_INPUT_FORMATS
 
-    def __init__(self, input_formats=None, format=None, *args, **kwargs):
-        self.input_formats = input_formats if input_formats is not None else self.input_formats
+    def __init__(self, format=None, input_formats=None, *args, **kwargs):
         self.format = format if format is not None else self.format
+        self.input_formats = input_formats if input_formats is not None else self.input_formats
         super(TimeField, self).__init__(*args, **kwargs)
 
     def from_native(self, value):

rest_framework/settings.py

@@ -97,24 +97,19 @@ DEFAULTS = {
     'URL_FIELD_NAME': 'url',
 
     # Input and output formats
-    'DATE_INPUT_FORMATS': (
-        ISO_8601,
-    ),
-    'DATE_FORMAT': None,
+    'DATE_FORMAT': ISO_8601,
+    'DATE_INPUT_FORMATS': (ISO_8601,),
 
-    'DATETIME_INPUT_FORMATS': (
-        ISO_8601,
-    ),
-    'DATETIME_FORMAT': None,
+    'DATETIME_FORMAT': ISO_8601,
+    'DATETIME_INPUT_FORMATS': (ISO_8601,),
 
-    'TIME_INPUT_FORMATS': (
-        ISO_8601,
-    ),
-    'TIME_FORMAT': None,
+    'TIME_FORMAT': ISO_8601,
+    'TIME_INPUT_FORMATS': (ISO_8601,),
 
     # Encoding
     'UNICODE_JSON': True,
-    'COMPACT_JSON': True
+    'COMPACT_JSON': True,
+    'COERCE_DECIMAL_TO_STRING': True
 }
 
 

tests/test_filters.py

@@ -2,10 +2,11 @@ from __future__ import unicode_literals
 import datetime
 from decimal import Decimal
 from django.db import models
+from django.conf.urls import patterns, url
 from django.core.urlresolvers import reverse
 from django.test import TestCase
 from django.utils import unittest
-from django.conf.urls import patterns, url
+from django.utils.dateparse import parse_date
 from rest_framework import generics, serializers, status, filters
 from rest_framework.compat import django_filters
 from rest_framework.test import APIRequestFactory
@@ -102,7 +103,7 @@ if django_filters:
 
 class CommonFilteringTestCase(TestCase):
     def _serialize_object(self, obj):
-        return {'id': obj.id, 'text': obj.text, 'decimal': str(obj.decimal), 'date': obj.date}
+        return {'id': obj.id, 'text': obj.text, 'decimal': str(obj.decimal), 'date': obj.date.isoformat()}
 
     def setUp(self):
         """
@@ -153,7 +154,7 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
         request = factory.get('/', {'date': '%s' % search_date})  # search_date str: '2012-09-22'
         response = view(request).render()
         self.assertEqual(response.status_code, status.HTTP_200_OK)
-        expected_data = [f for f in self.data if f['date'] == search_date]
+        expected_data = [f for f in self.data if parse_date(f['date']) == search_date]
         self.assertEqual(response.data, expected_data)
 
     @unittest.skipUnless(django_filters, 'django-filter not installed')
@@ -209,7 +210,7 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
         request = factory.get('/', {'date': '%s' % search_date})  # search_date str: '2012-10-02'
         response = view(request).render()
         self.assertEqual(response.status_code, status.HTTP_200_OK)
-        expected_data = [f for f in self.data if f['date'] > search_date]
+        expected_data = [f for f in self.data if parse_date(f['date']) > search_date]
         self.assertEqual(response.data, expected_data)
 
         # Tests that the text filter set with 'icontains' in the filter class works.
@@ -229,7 +230,7 @@ class IntegrationTestFiltering(CommonFilteringTestCase):
         })
         response = view(request).render()
         self.assertEqual(response.status_code, status.HTTP_200_OK)
-        expected_data = [f for f in self.data if f['date'] > search_date and
+        expected_data = [f for f in self.data if parse_date(f['date']) > search_date and
                          Decimal(f['decimal']) < search_decimal]
         self.assertEqual(response.data, expected_data)
 
@@ -481,9 +482,9 @@ class DjangoFilterOrderingTests(TestCase):
         self.assertEqual(
             response.data,
             [
-                {'id': 3, 'date': datetime.date(2014, 10, 8), 'text': 'cde'},
-                {'id': 2, 'date': datetime.date(2013, 10, 8), 'text': 'bcd'},
-                {'id': 1, 'date': datetime.date(2012, 10, 8), 'text': 'abc'}
+                {'id': 3, 'date': '2014-10-08', 'text': 'cde'},
+                {'id': 2, 'date': '2013-10-08', 'text': 'bcd'},
+                {'id': 1, 'date': '2012-10-08', 'text': 'abc'}
             ]
         )
 

tests/test_pagination.py

@@ -135,7 +135,7 @@ class IntegrationTestPaginationAndFiltering(TestCase):
 
         self.objects = FilterableItem.objects
         self.data = [
-            {'id': obj.id, 'text': obj.text, 'decimal': str(obj.decimal), 'date': obj.date}
+            {'id': obj.id, 'text': obj.text, 'decimal': str(obj.decimal), 'date': obj.date.isoformat()}
             for obj in self.objects.all()
         ]