title: How to display data with amcharts and django in realtime?
body: <p>I want the chart refresh itself(not to refresh the whole web page) ,like a heart monitor ,everytime a new data has been added to the database,is that possible?</p>
  
  <p>With codes below,i must refresh the web page and see if there's any new data.</p>
  
  <h2>views.py:</h2>
  
  <pre><code>from tempsensors.models import temp
  
  def temp_page(request):
  #this view is to store the temperature value into my database
  #data is send by my board with a temperature sensor
  if request.method == 'POST' and 'tem' in request.POST and request.POST['tem']:
      temp_value = float(request.POST['tem']) 
      temp_add = temp(temp=temp_value)
      temp_add.save()
  else:
  #only for post data
      raise Http404
  return render_to_response("temp.html",locals(),context_instance=RequestContext(request))
  
  def chart_page(request):
      #this view will display a chart
      temps = temp.objects.all()
      # formatting JSON file
      prefix = ''
      chartData = "[" 
      for t in temps:
          chartData += prefix
          chartData += "{\n" 
          chartData += "                      date: "
          chartData += "new Date(" + str(t.temp_date.year) + "," 
          chartData += str(t.temp_date.month-1) + "," 
          chartData += str(t.temp_date.day) + "," 
          chartData += str(t.temp_date.hour) + "," 
          chartData += str(t.temp_date.minute) + "),\n"
          chartData += "                      value: "
          chartData += str(t.temp) + "\n                      }"
          prefix = ", "
      chartData += "]" 
      temp_now = temp.objects.order_by("-id")[0].temp
      return render_to_response('chart.html', locals())
  </code></pre>
  
  <h2>chart.html</h2>
  
  <pre><code>var chartData = {{chartData}}
  chart.dataProvider = chartData;
  </code></pre>