[google-appengine] Re: Pagination snippets - Jared - com.googlegroups.google-appengine

5 messages in com.googlegroups.google-appengine[google-appengine] Re: Pagination sni...

From	Sent On	Attachments
mar...@google.com	09 Apr 2008 11:23
Mike Axiak	09 Apr 2008 11:28
Jared	20 Apr 2008 23:57
Venkatesh Rangarajan	22 Apr 2008 08:19
Jared	23 May 2008 13:21

Subject:	[google-appengine] Re: Pagination snippets
From:	Jared (gree...@gmail.com)
Date:	05/23/2008 01:21:25 PM
List:	com.googlegroups.google-appengine

Finally got to playing around with this. Just something to point out...

Rather than displaying a 404 page when the page= number is set out of bounds, you could do something like this...

try: page = int(self.request.get('page',0)) visits = paginator.get_page(page) except: visits = paginator.get_page(int(paginator.pages-1))

Then, no matter how far off the deep end page is set to (20000 or something), the user will just get the last page. I kind of like that better than a 404 page, but that's personal preference.

On Apr 22, 11:19 am, "Venkatesh Rangarajan" <venk...@gmail.com> wrote:

Jared,

here is a working example. Let me know if it works for you.

My Handler (from django.core.paginator import ObjectPaginator, InvalidPage)

---------------------------------------- class ListAll(webapp.RequestHandler): def get(self): #visitors=db.GqlQuery("SELECT * FROM Visit") visitors=Visit.all() visitors.order('-date') visitors=visitors.fetch(limit=100) paginate_by =10 paginator = ObjectPaginator(visitors, paginate_by) #self.response.out.write(paginator.pages) try: page = int(self.request.get('page', 0)) visits = paginator.get_page(page) except InvalidPage: raise http.Http404 template_values = { 'visits': visits, 'is_paginated' : True, 'results_per_page' : paginate_by, 'has_next': paginator.has_next_page(page), 'has_previous': paginator.has_previous_page(page), 'page': page + 1, 'next': page + 1, 'previous': page - 1, 'pages': paginator.pages, 'action':action, } path = os.path.join(os.path.dirname(__file__), 'show.html') self.response.out.write(template.render(path, template_values))

----------------------------------------

Here is my Template HTML

---------------------------------------------------- {% if has_previous %} <a href="?q=ip&page={{ previous }}"> < < previous {{ page }} {% endif %} {% if has_next %} <a href="?q=ip&page={{ next }}"> next >> {% endif %} </tr></td> {% endifequal %}

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