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import json | |
from django.shortcuts import _get_queryset | |
from django.http import HttpResponse | |
from app.exceptions.custom import JsonNotFound | |
# replacement for django.shortcuts.get_object_or_404() | |
# allows json to be returned with a 404 error | |
def get_object_or_json404(klass, *args, **kwargs): | |
queryset = _get_queryset(klass) | |
try: | |
return queryset.get(*args, **kwargs) | |
except queryset.model.DoesNotExist: | |
raise JsonNotFound() | |
def render_to_json_response(context, **response_kwargs): | |
# returns a JSON response, transforming 'context' to make the payload | |
response_kwargs['content_type'] = 'application/json' | |
return HttpResponse(convert_context_to_json(context), **response_kwargs) | |
def convert_context_to_json(context): | |
# convert the context dictionary into a JSON object | |
# note: this is *EXTREMELY* naive; in reality, you'll need | |
# to do much more complex handling to ensure that arbitrary | |
# objects -- such as Django model instances or querysets | |
# -- can be serialized as JSON. | |
return json.dumps(context) |
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