code: def index(request):
      try:
          studies = [study.to_json() for study in Study.objects.all()]
      except Study.DoesNotExist:
          studies = []
  
      try:
          trials = [trial.to_json() for trial in Trial.objects.all()]
      except Study.DoesNotExist:
          trials = []
  
      context = {
          "success": True,
          "studies": studies,
          "trials": trials,
          "platform": platform,
      }
      return render(request, "index.html", context)
  
imports: from __future__ import unicode_literals
  import json
  import requests
  import platform
  import six
  from django.contrib import messages
  from django.shortcuts import redirect
  from django.http import HttpResponse
  from django.views.decorators.csrf import csrf_exempt
  from django.http import JsonResponse
  from django.http import HttpResponseRedirect
  from django.urls import reverse
  from django.http import Http404
  from django.shortcuts import get_object_or_404
  from django.shortcuts import render
  from django.shortcuts import render_to_response
  from django.conf import settings
  from django import forms
  from django.contrib.admin.views.decorators import staff_member_required
  from django.contrib.auth.decorators import login_required
  from suggestion.models import Study
  from suggestion.models import Trial
label_desc: Use image node_id 2 for calling a global function with example usage: index(request) and returns: render