title: Get POST values in Django
body: <p>I had an ajax submit (<strong>GET</strong> query). But it makes change in my database, so smart people told me I should use <strong>POST</strong> instead with <code>{% csfr_token %}</code>.</p>
  
  <p>GET query:</p>
  
  <pre><code>$(document).on('submit','#follow', function(e){
      var $button = $(this).find('button');
      e.preventDefault();
      $.ajax({
          url:'/event/{{ event.id }}/',
          data: "add={{ event.id }}",
          success:function(){
               $('#follow').hide();
               $('#unfollow').show();
          }
      })
  });
  </code></pre>
  
  <p><strong>views.py</strong></p>
  
  <pre><code>...
  event = get_object_or_404(Event, id=event_id)
  user = request.user
      if request.GET.get('add'):
          event.users.add(user)
          event.save()
      if request.GET.get('remove'):
          event.users.remove(user)
          event.save()
  ...
  </code></pre>
  
  <p>So I added <code>type:"post",</code> and <code>csrfmiddlewaretoken:$('input[name=csrfmiddlewaretoken])</code> to data but I don't know what to use instead of <code>if request.GET.get('add'):</code> and <code>if request.GET.get('add'):</code>. I tried <code>if request.POST.get('add'):</code> but it doesn't work. So how to use that <code>if</code> with POST values?</p>
  
  <p><strong>UPD.</strong></p>
  
  <p>Ok, what i have now...
  <strong>template:</strong></p>
  
  <pre><code>&lt;form id="unfollow" {% if user not in event.users.all %}style="display:none;"{% endif %}&gt;
      &lt;input type="hidden" value="{{ event.id }}" name="remove"&gt;
      &lt;button type="submit" class="btn btn-warning btn-block"&gt;{% trans "Unfollow"%}&lt;/button&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>...</p>
  
  <pre><code>$(document).on('submit','#unfollow', function(e){
      var $button = $(this).find('button');
      e.preventDefault();
      $.ajax({
          type:"post",
          url:'/event/{{ event.id }}/',
          data: {
              'action': 'remove'
          },
          success:function(){
              $('#unfollow').hide();
              $('#follow').show();
          }
      })
  });
  </code></pre>
  
  <p>views.py:</p>
  
  <pre><code>def show_event(request, event_id):
      event = get_object_or_404(Event, id=event_id)
      user = request.user
      if 'action' in request.POST:
          if 'action' == 'add':
              event.users.add(user)
              event.save()
          elif 'action' == 'remove':
              event.users.remove(user)
              event.save()
      return render(request, 'events/event.html', {'event':event, 'user':user}
  </code></pre>
  
  <p>No errors, but it doesn't work. <code>success:function()</code> works fine but there are no changes in database. Any advice?</p>
  
  <p>I also tried <code>if request.POST('action') == 'add':</code> but it didn't help</p>