title: TemplateColumn with button and form only returns name of record not content
body: <p>I am trying to add a button with some functionality in a table that returns some info to the view using a POST:</p>
  <pre><code>class ProductTable(django-tables2.Table):
      Template = (f&quot;&quot;&quot;&lt;form action=&quot;/product_all/&quot; method=&quot;POST&quot;&gt;{{% csrf_token %}}
                          &lt;button&gt; 
                              &lt;input type=&quot;hidden&quot; name=&quot;store_id&quot; value=&quot;{{ record.get_store_id }}&quot;/&gt;view&lt;/button&gt;    
                      &lt;/form&gt;&quot;&quot;&quot;) 
  
  view = TemplateColumn(Template)
  </code></pre>
  <p>But when printing the request I get:</p>
  <pre><code>&lt;QueryDict: {'store_id': ['{ record.get_store_id }'], 'csrfmiddlewaretoken': ['...']}&gt;
  </code></pre>
  <p>instead of the value.</p>