old_contents: import json
  import logging
  logger = logging.getLogger(__name__)
  
  from django.http import JsonResponse
  from django.shortcuts import get_object_or_404
  from django.views.generic.base import View
  
  from news_feed.subreddit.models import Subreddit
  
  from .models import Post
  
  
  class CreatePostView(View):
  
      """
      This view creates a Post object in a given Subreddit.
  
      Input: a keyword parameter subreddit ID, or the special term 'global' to signify no Subreddit
      input_data, a json string representing a dictionary containing 'title' and 'content' keys.
  
      Output: 200 on success, 400 on missing parameter, 404 on invalid subreddit ID
      """
  
      def post(self, request, subreddit_scope, *args, **kwargs):
          input_data = json.loads(request.body)
  
          if 'title' not in input_data or 'content' not in input_data:
              logger.error('Missing parameter')
              return JsonResponse(status=400, data={'status': 'Missing parameter'}, safe=False)
  
          subreddit = None
          if subreddit_scope != 'global':
              subreddit = get_object_or_404(Subreddit, id=subreddit_scope)
  
          # STUDENT TODO | Create post from parameters
  
          return JsonResponse(status=200, data={'status': 'OK'}, safe=False)
  
  
  class ListPostView(View):
  
      """
      This view lists all Posts for a given Subreddit.
  
      Input: a keyword parameter subreddit ID, or the special term 'global' to signify all posts
      Output: 200 on success and a list of dictionaries, each one containing 'id', 'created',
      'title', and 'content'
      """
  
      def get(self, request, subreddit_scope, *args, **kwargs):
          if subreddit_scope == 'global':
              posts = Post.objects.all()
          else:
              posts = Post.objects.filter(subreddit__id=subreddit_scope)
  
          return JsonResponse(
              status=200,
              data={
                  'status': 'OK',
                  # STUDENT TODO | Return title and content as well
                  'posts': [
                      {
                          'id': post.id,
                          'created': post.created,
                      } for post in posts
                  ]
              }
          )
  
new_contents: import json
  import logging
  logger = logging.getLogger(__name__)
  
  from django.http import JsonResponse
  from django.shortcuts import get_object_or_404
  from django.views.generic.base import View
  
  from news_feed.subreddit.models import Subreddit
  
  from .models import Post
  
  
  class CreatePostView(View):
  
      """
      This view creates a Post object in a given Subreddit.
  
      Input: a keyword parameter subreddit ID, or the special term 'global' to signify no Subreddit
      input_data, a json string representing a dictionary containing 'title' and 'content' keys.
  
      Output: 200 on success, 400 on missing parameter, 404 on invalid subreddit ID
      """
  
      def post(self, request, subreddit_scope, *args, **kwargs):
          input_data = json.loads(request.body)
  
          if 'title' not in input_data or 'content' not in input_data:
              logger.error('Missing parameter')
              return JsonResponse(status=400, data={'status': 'Missing parameter'}, safe=False)
  
          subreddit = None
          if subreddit_scope != 'global':
              subreddit = get_object_or_404(Subreddit, id=subreddit_scope)
  
          # STUDENT TODO | Create post from parameters
          newtitle = input_data['title']
          newcontent = input_data['content']
          instance = Post(title=newtitle,content=newcontent,subreddit=subreddit)
          instance.save();
          return JsonResponse(status=200, data={'status': 'OK'}, safe=False)
  
  
  class ListPostView(View):
  
      """
      This view lists all Posts for a given Subreddit.
  
      Input: a keyword parameter subreddit ID, or the special term 'global' to signify all posts
      Output: 200 on success and a list of dictionaries, each one containing 'id', 'created',
      'title', and 'content'
      """
  
      def get(self, request, subreddit_scope, *args, **kwargs):
          if subreddit_scope == 'global':
              posts = Post.objects.all()
          else:
              posts = Post.objects.filter(subreddit__id=subreddit_scope)
  
          return JsonResponse(
              status=200,
              data={
                  'status': 'OK',
                  # STUDENT TODO | Return title and content as well
                  'posts': [
                      {
                          'id': post.id,
                          'created': post.created,
                          'title':post.title,
                          'content':post.content,
                      } for post in posts
                  ]
              }
          )
  
subject: change views.py,create and list post