fixed tests, added docs, renamed helper method

rest_framework/tests/fields.py

@@ -15,8 +15,8 @@ from django.test import TestCase
 from django.utils.datastructures import SortedDict
 
 from rest_framework import serializers
-from rest_framework.fields import (humanize_field, humanize_field_type, humanize_form_fields,
-                                   Field)
+from rest_framework.fields import (humanize_field, humanize_field_type,
+                                   humanize_form_fields, Field)
 from rest_framework.serializers import Serializer
 from rest_framework.tests.models import RESTFrameworkModel
 
@@ -882,10 +882,14 @@ class HumanizedSerializer(TestCase):
 
     def test_humanized(self):
         humanized = humanize_form_fields(Form())
-        self.assertEqual(humanized, {
-            'field1': {
-                u'help_text': u'', u'required': True,
-                u'type': u'String', u'label': 'field one'},
-            'field2': {
-                u'help_text': u'', u'required': True,
-                u'type': u'String', u'label': 'field two'}})
+        expected = {
+            'field1': {u'help_text': u'',
+                       u'label': u'field one',
+                       u'max_length': 3,
+                       u'required': True,
+                       u'type': u'String'},
+            'field2': {u'help_text': u'',
+                       u'label': u'field two',
+                       u'required': True,
+                       u'type': u'String'}}
+        self.assertEqual(humanized, expected)

rest_framework/tests/generics.py

@@ -131,6 +131,7 @@ class TestRootView(TestCase):
                 # TODO add help_text and label when they are available
                 #'help_text': '',
                 #'label': None,
+                'max_length': 100,
                 'read_only': False,
                 'required': True,
                 'type': 'String',
@@ -272,6 +273,7 @@ class TestInstanceView(TestCase):
                     # available
                     #'description': '',
                     #'label': None,
+                    'max_length': 100,
                     'read_only': False,
                     'required': True,
                     'type': 'String',

rest_framework/views.py

@@ -61,15 +61,16 @@ class APIView(View):
             'renders': [renderer.media_type for renderer in self.renderer_classes],
             'parses': [parser.media_type for parser in self.parser_classes],
         }
-        action_metadata = self._generate_action_metadata(request)
-        if action_metadata is not None:
-            content['actions'] = action_metadata
+        content['actions'] = self.action_metadata(request)
 
         return content
 
-    def _generate_action_metadata(self, request):
-        """
-        Helper for generating the fields metadata for allowed and permitted methods.
+    def action_metadata(self, request):
+        """Return a dictionary with the fields required fo reach allowed method. If no method is allowed,
+        return an empty dictionary.
+
+        :param request: Request for which to return the metadata of the allowed methods.
+        :return: A dictionary of the form {method: {field: {field attribute: value}}}
         """
         actions = {}
         for method in self.allowed_methods: