Haystack Search Pager

To make haystack search pager place nicelly with other get parameters, we can do something like this:

1. Create a templatetag:

   @register.simple_tag
   def get_search_pager_link(request):
       params = []
       link = "?"
       for key, value in request.GET.items():
           if key != "page":
               params.append(u"{}={}".format(key, value))
               link += "&".join(params)
           if len(link) > 1:
               link += "&"
       return link
   

2. Use it in your search pager template like this:

   {% load core_tags %} {% if page.has_previous or page.has_next %}
   <ul class="pagination">
     {% if page.has_previous %}
     <li class="previous">
       <a
         href="{% get_search_pager_link request %}page={{ page.previous_page_number }}"
         >previous</a
       >
     </li>
     {% endif %} {% for pg in page.paginator.page_range %} {% if page.number == pg
     %}
     <li class="active">
       <a href="{% get_search_pager_link request %}page={{ pg }}">{{ pg }}</a>
     </li>
     {% else %}
     <li>
       <a href="{% get_search_pager_link request %}page={{ pg }}">{{ pg }}</a>
     </li>
     {% endif %} {% endfor %} {% if page.has_next %}
     <li class="next">
       <a
         href="{% get_search_pager_link request %}page={{ page.next_page_number }}"
         >next</a
       >
     </li>
     {% endif %}
   </ul>
   {% endif %}
   

That way we'll achieve some nice functionality: search pager will play well with other GET parameters.