Python – Using Django JSON serializer for object that is not a Model

djangogoogle-app-enginejsonpythonserialization

Is it possible to use Django serializer without a Model?
How it is done?
Will it work with google-app-engine?

I don't use Django framework, but since it is available, I would want to use its resources here and there.
Here is the code I tried:

from django.core import serializers
obj = {'a':42,'q':'meaning of life'}
serialised = serializers.serialize('json', obj)

this generates an error

ERROR ... __init__.py:385] 'str' object has no attribute '_meta'

Best Solution

Serializers are only for models. Instead you can use simplejson bundled with Django.

from django.utils import simplejson
json_str = simplejson.dumps(my_object)

Simplejson 2.0.9 docs are here.

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JSON.parse(jsonString) is a pure JavaScript approach so long as you can guarantee a reasonably modern browser.

Python – Creating a JSON response using Django and Python

I usually use a dictionary, not a list to return JSON content.

import json

from django.http import HttpResponse

response_data = {}
response_data['result'] = 'error'
response_data['message'] = 'Some error message'

Pre-Django 1.7 you'd return it like this:

return HttpResponse(json.dumps(response_data), content_type="application/json")

For Django 1.7+, use JsonResponse as shown in this SO answer like so :

from django.http import JsonResponse
return JsonResponse({'foo':'bar'})

Best Solution

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Javascript – Safely turning a JSON string into an object

Python – Creating a JSON response using Django and Python

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