title: Django dropdown [onChange] box with selected values but can't get the selected value
body: <p>I have a dropdown selection of titles that upon selection of specific title, an action (should) run. </p>
  
  <p>What I have: </p>
  
  <p><strong>form.py</strong></p>
  
  <pre><code>class CronForm(forms.Form): 
      title = forms.ModelChoiceField(queryset=GlobalFID.objects.all().order_by('-title_date'), widget=forms.Select(attrs={"onChange":'change_title()'}))
  </code></pre>
  
  <p>view.py [title_change_view ]</p>
  
  <pre><code>my_form = CronForm() #initial=data
  return render(request, 'research/title_result.html',{"my_form":my_form})
  </code></pre>
  
  <p><strong>html</strong></p>
  
  <pre><code>    &lt;form method="post" &gt;
          {% csrf_token %}
          {{ my_form }}
      &lt;/form&gt;
  </code></pre>
  
  <p><strong>and on the js side:</strong></p>
  
  <pre><code>function change_title()
  { 
      var murl= "{% url 'title_change_view' %}"; 
      window.location = murl; 
  }
  </code></pre>
  
  <p>my goal is to have the SELECTED title from {{my_form}} in the view title_change_view. While the redirection works, I can't get the selected value. </p>
  
  <p>Strategies I considered/tried:</p>
  
  <ol>
  <li><p>In the title_change_view I added <code>if request.method == 'POST':</code> but it's not a post (so it overlook it) so I can't read the form. </p></li>
  <li><p><code>var murl= "{% url 'title_change_view' %}";</code>  to add additional parameter <code>?title=[SELCTED_VALUE]</code> but couldn't figure out how to add the SELECTED title into murl or into the change_title() fuction.</p></li>
  </ol>
  
  <p>any idea?</p>