Django

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Ticket #9215: pagination.diff

File pagination.diff, 2.2 kB (added by shacker, 1 year ago)

Formatting corrections to original patch

  • docs/topics/pagination.txt

    old new  
    7575    objects such as Django's ``QuerySet`` to use a more efficient ``count()`` 
    7676    method when available. 
    7777 
     78 
     79Implementation Example 
     80====================== 
     81 
     82A working example of a view and accompanying template might look like this,  
     83assuming you want to display a multi-page listing of an existing "Contacts"  
     84model:  
     85 
     86In :file:`views.py`: :: 
     87 
     88    from django.core.paginator import Paginator, InvalidPage, EmptyPage 
     89 
     90    def listing(request): 
     91        contact_list = Contacts.objects.all() 
     92        paginator = Paginator(contact_list, 25) # Show 25 contacts per page 
     93 
     94        # Make sure page request is an int. If not, deliver first page. 
     95        try: 
     96            page = int(request.GET.get('page', '1')) 
     97        except ValueError: 
     98            page = 1 
     99        
     100        # If page request (9999) is out of range, deliver last page of results. 
     101        try: 
     102            contacts = paginator.page(page) 
     103        except (EmptyPage, InvalidPage): 
     104            contacts = paginator.page(paginator.num_pages) 
     105 
     106        return render_to_response( 
     107            'list.html',  
     108            locals(),  
     109            context_instance=RequestContext(request) 
     110        ) 
     111 
     112In template :file:`list.html`, you'll want navigation between pages.  
     113Note that you can simply output the page object as ``{{ contacts }}`` to 
     114render the "page *n* of pages" information.:: 
     115 
     116    {% for contact in contacts.object_list %} 
     117        {{ contact.full_name|upper }}<br /> 
     118        ... 
     119    {% endfor %} 
     120 
     121    <div class="pagination"> 
     122        <span class="step-links"> 
     123        {% if contacts.has_previous %}<a href="?page={{ contacts.previous_page_number }}"  
     124            class="util-link">previous</a>{% endif %}  
     125        <span class="current"> 
     126            {{ contacts }} 
     127        </span> 
     128        {% if contacts.has_next %}<a href="?page={{ contacts.next_page_number }}"  
     129            class="util-link">next</a>{% endif %}  
     130        </span> 
     131    </div> 
     132     
     133 
    78134``Paginator`` objects 
    79135===================== 
    80136