title: How to add new page in Django admin site, with custom context data?
body: <p>I want to provide a new admin page, where admin user can update some model.</p>
  
  <p>As of now, I have provided custom url under admin section and in view  verified wether the user is superuser, and returned my html template.</p>
  
  <p>While returning template I am passing some data with context object, a list of model query result. All pages and structure are loading fine, but the data I provided through context variable is available when accessing it in the template.</p>
  
  <p>Following is the code structure I have :</p>
  
  <p>admin URL:</p>
  
  <pre><code>admin/add-product-details
  </code></pre>
  
  <p>view listening to this call:</p>
  
  <pre><code>@user_passes_test(lambda u: u.is_superuser)
  def add_product_details(request):
      products = Product.objects.all()
      context = {
          products : products
      }
      return render_to_response('admin/add_product_details.html',context,context_instance = RequestContext(request))
  </code></pre>
  
  <p>Tempalte structure:</p>
  
  <pre><code>{% extends "admin/base.html" %}
  
  {% block content_title %}
      &lt;h3&gt;
          &lt;small&gt;
              ADD PRODUCT DETAILS
          &lt;/small&gt;
      &lt;/h3&gt;
  {% endblock %}
  
  {% block content %}
      &lt;div class="container"&gt;
          &lt;div class="row"&gt;
              &lt;hr&gt;
              {{products}}
              &lt;hr&gt;
              &lt;select&gt;
                  &lt;option value=""&gt;Select Product&lt;/option&gt;
                  {% for product in products %}
                      &lt;option value="{{product.id}}"&gt;
                          {{product.id}} - {{product.name}}
                      &lt;/option&gt;
                  {% endfor %}
              &lt;/select&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  {% endblock %}
  </code></pre>