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@vbabiy
Last active March 29, 2020 22:36
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CamelCaseJSONRenderer For django rest framework
from rest_framework.parsers import JSONParser
from django.conf import settings
import re
import json
first_cap_re = re.compile('(.)([A-Z][a-z]+)')
all_cap_re = re.compile('([a-z0-9])([A-Z])')
def camel_to_underscore(name):
s1 = first_cap_re.sub(r'\1_\2', name)
return all_cap_re.sub(r'\1_\2', s1).lower()
def underscoreize(data):
if isinstance(data, dict):
new_dict = {}
for key, value in data.items():
new_key = camel_to_underscore(key)
new_dict[new_key] = underscoreize(value)
return new_dict
if isinstance(data, (list, tuple)):
for i in range(len(data)):
data[i] = underscoreize(data[i])
return data
return data
class CamelCaseJSONRenderer(JSONParser):
def parse(self, stream, media_type=None, parser_context=None):
parser_context = parser_context or {}
encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)
try:
data = stream.read().decode(encoding)
return underscoreize(json.loads(data))
except ValueError as exc:
raise ParseError('JSON parse error - %s' % six.text_type(exc))
from rest_framework.renderers import JSONRenderer
import re
def underscoreToCamel(match):
return match.group()[0] + match.group()[2].upper()
def camelize(data):
if isinstance(data, dict):
new_dict = {}
for key, value in data.items():
new_key = re.sub(r"[a-z]_[a-z]", underscoreToCamel, key)
new_dict[new_key] = camelize(value)
return new_dict
if isinstance(data, (list, tuple)):
for i in range(len(data)):
data[i] = camelize(data[i])
return data
return data
class CamelCaseJSONRenderer(JSONRenderer):
def render(self, data, *args, **kwargs):
return super(CamelCaseJSONRenderer, self).render(camelize(data), *args, **kwargs)
# ...
REST_FRAMEWORK = {
'DEFAULT_RENDERER_CLASSES': (
'utils.api.renderers.CamelCaseJSONRenderer',
'rest_framework.renderers.BrowsableAPIRenderer',
),
'DEFAULT_PARSER_CLASSES': (
'utils.api.parsers.CamelCaseJSONRenderer',
'rest_framework.parsers.FormParser',
'rest_framework.parsers.MultiPartParser'
),
# ...
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