Custom Django JsonResponse which supports datetime.datetime serialization

django-JsonResponse.py

# project/forum/views.py

import json
from datetime import datetime

from django.http import HttpResponse
from django.shortcuts import get_object_or_404
from django.forms.models import model_to_dict
from forum.models import Post

class DateTimeEncoder(json.JSONEncoder):
    # default JSONEncoder cannot serialize datetime.datetime objects
    def default(self, obj):
        if isinstance(obj, datetime):
            encoded_object = obj.strftime('%s')
        else:
            encoded_object = super(self, obj)
        return encoded_object

class JsonResponse(HttpResponse):
    def __init__(self, content, mimetype='application/json', status=None, content_type='application/json'):
        json_text = json.dumps(content, cls=DateTimeEncoder)
        super(JsonResponse, self).__init__(
            content=json_text,
            status=status,
            content_type=content_type)
            
# GET /posts/123/comments/456.json
#   => {"id": 456, "content": "...", "user_id": 9, "post": {"id": "123", "title": "...", "content": "..."} }
def posts_comments_item_json(request, post_id, comment_id):
    post = get_object_or_404(Post, pk=post_id)
    comment = post.comment_set.get(pk=comment_id)
    result = model_to_dict(comment).copy()
    result.update(dict(post=model_to_dict(post)))
    return JsonResponse(result)

from django.http import JsonResponse
from django.core.serializers.json import DjangoJSONEncoder

class DateTimeEncoder(DjangoJSONEncoder):
    pass

view:
return JsonResponse(result, encoder=DateTimeEncoder)