old_contents: from django.shortcuts import render
  from api import actions
  from django.http import HttpResponse
  import json
  from django.views.decorators.csrf import csrf_exempt
  from django_ajax.decorators import ajax
  import json
  import time
  
  from rest_framework import status
  from rest_framework.decorators import api_view
  from rest_framework.response import Response
  
  from django.http import JsonResponse
  
  def date_handler(obj):
      if hasattr(obj, 'isoformat'):
          return obj.isoformat()
      else:
          return str(obj)
  
  
  # Create your views here.
  
  
  def create_ajax_handler(func):
      @csrf_exempt
      def execute(request):
          content = request.POST if request.POST else request.GET
          data = func(json.loads(content['query']), {'user': request.user})
  
          # This must be done in order to clean the structure of non-serializable
          # objects (e.g. datetime)
          response_data = json.loads(json.dumps(data, default=date_handler))
          return JsonResponse({'content':response_data}, safe=False)
      return execute
  
  
  def stream(data):
      size = len(data)
      chunck = 100
  
      for i in range(size):
          yield json.loads(json.dumps(data[i], default=date_handler))
          time.sleep(1)
new_contents: from django.shortcuts import render
  from api import actions
  from django.http import HttpResponse
  import json
  from django.views.decorators.csrf import csrf_exempt
  from django_ajax.decorators import ajax
  import json
  import time
  
  from rest_framework import status
  from rest_framework.decorators import api_view
  from rest_framework.response import Response
  
  from django.http import JsonResponse
  
  def date_handler(obj):
      """
      Implements a handler to serialize dates in JSON-strings
      :param obj: An object
      :return: The str method is called (which is the default serializer for JSON) unless the object has an attribute  *isoformat*
      """
      if hasattr(obj, 'isoformat'):
          return obj.isoformat()
      else:
          return str(obj)
  
  
  # Create your views here.
  
  
  def create_ajax_handler(func):
      """
      Implements a mapper from api pages to the corresponding functions in
      api/actions.py
      :param func: The name of the callable function
      :return: A JSON-Response that contains a dictionary with the corresponding response stored in *content*
      """
      @csrf_exempt
      def execute(request):
          content = request.POST if request.POST else request.GET
          data = func(json.loads(content['query']), {'user': request.user})
  
          # This must be done in order to clean the structure of non-serializable
          # objects (e.g. datetime)
          response_data = json.loads(json.dumps(data, default=date_handler))
          return JsonResponse({'content':response_data}, safe=False)
      return execute
  
  
  def stream(data):
      """
      TODO: Implement streaming of large datasets
      :param data:
      :return:
      """
      size = len(data)
      chunck = 100
  
      for i in range(size):
          yield json.loads(json.dumps(data[i], default=date_handler))
          time.sleep(1)
subject: Add docstrings to api/views.py