Updates to support most recent Ember Data conventions

More recent Ember Data requires all JSON keys to use camel
casing instead of underscores. In addition, the outer key
with name of relation needs to be pluralized when it contains
a list of model instances.

This makes use of the Python inflection library which can convert
between both camel case and underscore formatting, as well as singular
and plural tenses of english words.

Author: fdanielsen

rest_framework_ember/parsers.py

@@ -3,7 +3,9 @@
 """
 from rest_framework.parsers import JSONParser
 
-from rest_framework_ember.utils import get_resource_name
+from rest_framework_ember.utils import (get_resource_name,
+                                        underscore,
+                                        recursive_key_map)
 
 
 class EmberJSONParser(JSONParser):
@@ -30,5 +32,5 @@ def parse(self, stream, media_type=None, parser_context=None):
             stream, media_type=None, parser_context=None)
 
         resource_name = get_resource_name(parser_context.get('view', None))
-        return result.get(resource_name)
-
+        data = result.get(resource_name)
+        return recursive_key_map(underscore, data)

rest_framework_ember/renderers.py

@@ -1,7 +1,9 @@
 import copy
 from rest_framework import renderers
 
-from rest_framework_ember.utils import get_resource_name
+from rest_framework_ember.utils import (get_resource_name,
+                                        camelize,
+                                        recursive_key_map)
 
 
 class JSONRenderer(renderers.JSONRenderer):
@@ -31,6 +33,8 @@ def render(self, data, accepted_media_type=None, renderer_context=None):
             data = {resource_name : content, "meta" : data_copy}
         except (TypeError, KeyError, AttributeError) as e:
             data = {resource_name : data}
+
+        if data:
+            data = recursive_key_map(camelize, data)
         return super(JSONRenderer, self).render(
             data, accepted_media_type, renderer_context)
-

rest_framework_ember/utils.py

@@ -1,6 +1,16 @@
 """
 Resource name utilities.
 """
+from collections import OrderedDict
+from functools import partial
+import re
+
+import inflection
+
+
+camelize = partial(inflection.camelize, uppercase_first_letter=False)
+underscore = inflection.underscore
+
 
 def get_resource_name(view):
     """
@@ -28,5 +38,18 @@ def get_resource_name(view):
 
             resource_name = name[:1].lower() + name[1:]
 
-    return resource_name
+    if view.action == 'list':
+        resource_name = inflection.pluralize(resource_name)
+    return inflection.underscore(resource_name)
+
 
+def recursive_key_map(function, obj):
+    if isinstance(obj, dict):
+        new_dict = OrderedDict()
+        for key, value in obj.items():
+            key = function(key)
+            new_dict[key] = recursive_key_map(function, value)
+        return new_dict
+    if isinstance(obj, (list, tuple)):
+        return [recursive_key_map(function, value) for value in obj]
+    return obj

setup.py

@@ -16,7 +16,7 @@ def get_readme():
     license='BSD',
     keywords="EmberJS Django REST",
     packages=find_packages(),
-    install_requires=['django', 'djangorestframework' ],
+    install_requires=['django', 'djangorestframework', 'inflection'],
     platforms=['any'],
     classifiers=[
         'Development Status :: 4 - Beta',