Python views.paginate函数代码示例

def page_lists(request, page):
    page_posts = RichTextPage.objects.published(for_user=request.user).filter(parent=page).order_by("-publish_date")

    paginate(page_posts, request.GET.get("page", 1),
                         settings.BLOG_POST_PER_PAGE,
                         settings.MAX_PAGING_LINKS)
    return {'page_posts': page_posts}

def blog_post_list(request, tag=None, year=None, month=None, username=None,
                   category=None, template="blog/blog_post_list.html"):
    """
    Display a list of blog posts that are filtered by tag, year, month,
    author or category. Custom templates are checked for using the name
    ``blog/blog_post_list_XXX.html`` where ``XXX`` is either the
    category slug or author's username if given.
    """
    settings.use_editable()
    templates = []
    blog_posts = BlogPost.objects.published(for_user=request.user)
    if tag is not None:
        tag = get_object_or_404(Keyword, slug=tag)
        blog_posts = blog_posts.filter(keywords__in=tag.assignments.all())
    if year is not None:
        blog_posts = blog_posts.filter(publish_date__year=year)
        if month is not None:
            blog_posts = blog_posts.filter(publish_date__month=month)
            month = month_name[int(month)]
    if category is not None:
        category = get_object_or_404(BlogCategory, slug=category)
        blog_posts = blog_posts.filter(categories=category)
        templates.append(u"blog/blog_post_list_%s.html" %
                          unicode(category.slug))
    author = None
    if username is not None:
        author = get_object_or_404(User, username=username)
        blog_posts = blog_posts.filter(user=author)
        templates.append(u"blog/blog_post_list_%s.html" % username)
    # Create dicts mapping blog post IDs to lists of categories and
    # keywords, and assign these to each blog post, to avoid querying
    # the database inside the template loop for posts.
    blog_posts = list(blog_posts.select_related("user"))
    categories = defaultdict(list)
    if blog_posts:
        ids = ",".join([str(p.id) for p in blog_posts])
        for cat in BlogCategory.objects.raw(
            "SELECT * FROM blog_blogcategory "
            "JOIN blog_blogpost_categories "
            "ON blog_blogcategory.id = blogcategory_id "
            "WHERE blogpost_id IN (%s)" % ids):
            categories[cat.blogpost_id].append(cat)
    keywords = defaultdict(list)
    blogpost_type = ContentType.objects.get(app_label="blog", model="blogpost")
    assigned = AssignedKeyword.objects.filter(blogpost__in=blog_posts,
                          content_type=blogpost_type).select_related("keyword")
    for a in assigned:
        keywords[a.object_pk].append(a.keyword)
    for i, post in enumerate(blog_posts):
        setattr(blog_posts[i], "category_list", categories[post.id])
        setattr(blog_posts[i], "keyword_list", keywords[post.id])
    blog_posts = paginate(blog_posts,
                          request.GET.get("page", 1),
                          settings.BLOG_POST_PER_PAGE,
                          settings.MAX_PAGING_LINKS)
    context = {"blog_page": blog_page(), "blog_posts": blog_posts,
               "year": year, "month": month, "tag": tag,
               "category": category, "author": author}
    templates.append(template)
    return render(request, templates, context)

def article_list(request, tag=None, category=None, template="article/article_list.html"):
    """
    Display a list of blog posts that are filtered by tag, year, month,
    author or category. Custom templates are checked for using the name
    ``blog/blog_post_list_XXX.html`` where ``XXX`` is either the
    category slug or author's username if given.
    """
    settings.use_editable()
    templates = []
    articles = Article.objects.published(for_user=request.user)
    if tag is not None:
        tag = get_object_or_404(Keyword, slug=tag)
        articles = articles.filter(keywords__in=tag.assignments.all())
    if category is not None:
        category = get_object_or_404(BlogCategory, slug=category)
        articles = articles.filter(categories=category)
        # templates.append(u"article/blog_post_list_%s.html" %
        #                  str(category.slug))
    author = None
    prefetch = ("categories", "keywords__keyword")
    articles = articles.select_related("user").prefetch_related(*prefetch)
    articles = paginate(articles, request.GET.get("page", 1),
                          settings.BLOG_POST_PER_PAGE,
                          settings.MAX_PAGING_LINKS)
    context = {"articles": articles,
               "tag": tag, "category": category, "author": author}
    templates.append(template)
    return render(request, templates, context)

def search(request, template="search_results.html"):
    """
    Display search results. Takes an optional "contenttype" GET parameter
    in the form "app-name.ModelName" to limit search results to a single model.
    """
    settings.use_editable()
    query = request.GET.get("q", "")
    page = request.GET.get("page", 1)
    per_page = settings.SEARCH_PER_PAGE
    max_paging_links = settings.MAX_PAGING_LINKS
    try:
        search_model = get_model(*request.GET.get("type", "").split(".", 1))
        if not issubclass(search_model, Displayable):
            raise TypeError
    except TypeError:
        search_model = Displayable
        search_type = _("Everything")
    else:
        search_type = search_model._meta.verbose_name_plural.capitalize()
    results = search_model.objects.search(query, for_user=request.user)

    if 'location' and 'age' in request.session:
        if 'cart loaded' in request.session:
            stores = request.session['stores']

        else:
            avail_store_ids = request.session['store ids']

            if avail_store_ids:
                stores = Store.objects.filter(id__in=avail_store_ids)
            else:
                return HttpResponseRedirect('/shop/no-stores-yet')

        avail_prod_ids = []
        for p in stores:
            for k in results:
                if p == k.store:
                    avail_prod_ids.append(k.id)

        results = Product.objects.filter(id__in=avail_prod_ids)

        sort_options = [(slugify(option[0]), option[1])
                    for option in settings.SHOP_PRODUCT_SORT_OPTIONS]
        sort_by = request.GET.get("sort", sort_options[0][1])
        results = paginate(results.order_by(sort_by),
                        request.GET.get("page", 1),
                        settings.SHOP_PER_PAGE_CATEGORY,
                        settings.MAX_PAGING_LINKS)
        results.sort_by = sort_by

    else:
#        return render(request, template, {"have_loc": False})
	info(request, _("Enter your location to use the search"))
        return HttpResponseRedirect('/')

#    paginated = paginate(results, page, per_page, max_paging_links)
    paginated = results
    context = {"query": query, "results": paginated,
               "search_type": search_type, "have_loc": True}
    return render(request, template, context)

def show_forum(request, forum_id, full=True):
    forum = get_object_or_404(Forum, pk=forum_id)
    if not forum.category.has_access(request.user):
        raise PermissionDenied
    topics = forum.topics.order_by('-sticky', '-updated').select_related()
    topics = paginate(topics, request.GET.get("page", 1),
                      forum_settings.FORUM_PAGE_SIZE, 20)
    moderator = request.user.is_superuser or\
        request.user in forum.moderators.all()

    categories = []
    for category in Category.objects.all():
        if category.has_access(request.user):
            categories.append(category)

    to_return = {'categories': categories,
                'forum': forum,
                'posts': forum.post_count,
                'topics': topics,
                'moderator': moderator,
                }
    if full:
        return render(request, 'djangobb_forum/forum.html', to_return)
    else:
        return render(request, 'djangobb_forum/lofi/forum.html', to_return)

def have_location_get_categories_products(request, page, published_products, avail_stores, avail_store_names, avail_liquor_types):

    avail_prod_ids = []
    for p in avail_stores:
        for k in published_products:
            if p == k.store:
                avail_prod_ids.append(k.id)

    products = Product.objects.filter(id__in=avail_prod_ids)

    sort_options = [(slugify(option[0]), option[1])
                for option in settings.SHOP_PRODUCT_SORT_OPTIONS]
    sort_by = request.GET.get("sort", sort_options[0][1])
    products = paginate(products.order_by(sort_by),
                    request.GET.get("page", 1),
                    settings.SHOP_PER_PAGE_CATEGORY,
                    settings.MAX_PAGING_LINKS)
    products.sort_by = sort_by

    sub_categories = [p.titles for p in page.category.children.published()]
    avail_stores = list(set(sub_categories) & set(avail_store_names))
    avail_liquors = list(set(sub_categories) & set(avail_liquor_types))
    avail_categories = avail_liquors + avail_stores

    child_categories = Category.objects.filter(titles__in=avail_categories)

    return products, child_categories

def search(request, template="search_results.html", extra_context=None):
    """
    Display search results. Takes an optional "contenttype" GET parameter
    in the form "app-name.ModelName" to limit search results to a single model.
    """
    settings.use_editable()
    query = request.GET.get("q", "")
    page = request.GET.get("page", 1)
    per_page = settings.SEARCH_PER_PAGE
    max_paging_links = settings.MAX_PAGING_LINKS
    try:
        parts = request.GET.get("type", "").split(".", 1)
        search_model = apps.get_model(*parts)
        search_model.objects.search  # Attribute check
    except (ValueError, TypeError, LookupError, AttributeError):
        search_model = Displayable
        search_type = _("Everything")
    else:
        search_type = search_model._meta.verbose_name_plural.capitalize()
    results = search_model.objects.search(query, for_user=request.user)
    paginated = paginate(results, page, per_page, max_paging_links)
    context = {"query": query, "results": paginated,
               "search_type": search_type}
    context.update(extra_context or {})
    return render(request, template, context)

def frontpage(request):
    # @TODO: Use weight and featured fields, which need to be implemented.
    articles = Article.objects.filter(public=True).order_by('-updated_at')[:5]
    articles = paginate(articles, request.GET.get("page", 1),
                        settings.BLOG_POST_PER_PAGE,
                        settings.MAX_PAGING_LINKS)
    return render(request, ['frontpage.html'], {'articles': articles})

def comment_thread(context, parent):
    """
    Return a list of child comments for the given parent, storing all
    comments in a dict in the context when first called, using parents
    as keys for retrieval on subsequent recursive calls from the
    comments template.
    """
    if "all_comments" not in context:
        comments = defaultdict(list)
        if "request" in context and context["request"].user.is_staff:
            comments_queryset = parent.comments.all()
        else:
            comments_queryset = parent.comments.visible()
        for comment in comments_queryset.select_related("user"):
            comments[comment.replied_to_id].append(comment)
        context["all_comments"] = comments
    parent_id = parent.id if isinstance(parent, Review) else None
    try:
        replied_to = int(context["request"].POST["replied_to"])
    except KeyError:
        replied_to = 0

    page = context['request'].GET.get("page", 1)
    per_page = django_settings.REVIEWS_PER_PAGE
    max_paging_links = django_settings.MAX_PAGING_LINKS

    comments_queryset = context["all_comments"].get(parent_id, [])
    paginated = paginate(comments_queryset, page, per_page, max_paging_links)

    context.update({
        "comments_for_thread": paginated,
        "no_comments": parent_id is None and not context["all_comments"],
        "replied_to": replied_to,
    })
    return context

def blog_post_list(request, tag=None, year=None, month=None, username=None,
    category=None, template="blog/blog_post_list.html"):
    """
    Display a list of blog posts.
    """
    settings.use_editable()
    blog_posts = BlogPost.objects.published(for_user=request.user)
    if tag is not None:
        tag = get_object_or_404(Keyword, slug=tag)
        blog_posts = blog_posts.filter(keywords=tag)
    if year is not None:
        blog_posts = blog_posts.filter(publish_date__year=year)
        if month is not None:
            blog_posts = blog_posts.filter(publish_date__month=month)
            month = month_name[int(month)]
    if category is not None:
        category = get_object_or_404(BlogCategory, slug=category)
        blog_posts = blog_posts.filter(categories=category)
    author = None
    if username is not None:
        author = get_object_or_404(User, username=username)
        blog_posts = blog_posts.filter(user=author)
    blog_posts = paginate(blog_posts, request.GET.get("page", 1),
        settings.BLOG_POST_PER_PAGE,
        settings.BLOG_POST_MAX_PAGING_LINKS)
    context = {"blog_posts": blog_posts, "year": year, "month": month,
               "tag": tag, "category": category, "author": author,
               "use_disqus": bool(settings.COMMENTS_DISQUS_SHORTNAME),
               "blog_page": blog_page()}
    return render_to_response(template, context, RequestContext(request))

 def render_blog(self, request, year=None, month=None, author=None, category=None):
     posts = self.posts.published(for_user=request.user)
     #if tag is not None:
     #    tag = get_object_or_404(Keyword, slug=tag)
     #    blog_posts = blog_posts.filter(keywords=tag)
     if year is not None:
         if not year.isdigit():
             raise Http404
         posts = posts.filter(publish_date__year=year)
         if month is not None:
             if not month.isdigit():
                 raise Http404
             posts = posts.filter(publish_date__month=month)
             month = month_name[int(month)]
     if category is not None:
         try:
             category = self.categories.get(slug=category)
         except Category.DoesNotExist:
             raise Http404
         posts = posts.filter(category=category)
     if author is not None:
         author = get_object_or_404(User, username=author)
         posts = posts.filter(user=author)
     posts = paginate(posts,
                      request,
                      self.posts_per_page,
                      self.max_paging_links)
     context = {"displayable": self,
                "posts": posts,
                "year": year,
                "month": month,
                "category": category,
                "author": author,
                }
     return HttpResponse(self.get_template().render(RequestContext(request, context)))

def agents(request, agent_state_slug, agent_city_slug):
    agents = queryset_iterator(Agent.objects.filter(slugged_state=abbreviate_slugged_state(agent_state_slug),
                               slugged_city=agent_city_slug))
    # agents = get_list_or_404(Agent, slugged_state=abbreviate_slugged_state(agent_state_slug),
    #                          slugged_city=agent_city_slug)

    agent_list = []
    for ag in agents:
        agent_list.append(ag)

    agents = paginate(agent_list,
                      request.GET.get("page", 1),
                      100, 10)

    profile_claimed = is_profile_claimed(request.user)

    if request.GET.get("page") == '1':
        return HttpResponsePermanentRedirect(reverse('agent.views.agents',
                                                     args=[agent_state_slug, agent_city_slug]))

    return render_to_response('pages/agents.html',
                              {'agents': agents,
                               'agent_state_slug': agent_state_slug,
                               'agent_city_slug': agent_city_slug,
                               'profile_claimed': profile_claimed}, context_instance=RequestContext(request))

def bookmarks(request, slug=None, username=None):
    bookmarks = Bookmark.objects.all().order_by("-publish_date")
    keyword = None
    user = None

    if slug:
        try:
            keyword = Keyword.objects.get(slug=slug)
        except Keyword.DoesNotExist:
            raise Http404

        bookmarks = bookmarks.filter(keywords__keyword_id=keyword.pk)

    if username:
        try:
            user = User.objects.get(username=username)
        except User.DoesNotExist:
            raise Http404

        bookmarks = bookmarks.filter(user__username=username)

    bookmarks = paginate(
        bookmarks,
        request.GET.get("page", 1),
        15,
        settings.MAX_PAGING_LINKS,
    )
    return render(request, ["bookmarks/bookmarks.html"], {
        "bookmarks": bookmarks,
        "tag": keyword,
        "username": user,
    })

 def get_context_data(self, **kwargs):
     context = super().get_context_data(**kwargs)
     context['testimonials'] = paginate(context['testimonials'],
                                        self.request.GET.get("page", 1),
                                        5,
                                        settings.MAX_PAGING_LINKS)
     return context

def search(request, template="search_results.html"):
    """
    Display search results. Takes an optional "contenttype" GET parameter
    in the form "app-name.ModelName" to limit search results to a single model.
    """
    settings.use_editable()
    query = request.GET.get("q", "")
    page = request.GET.get("page", 1)
    per_page = settings.SEARCH_PER_PAGE
    max_paging_links = settings.MAX_PAGING_LINKS
    table_name = BlogPost._meta.db_table
    try:
        search_model = get_model(*request.GET.get("type", "").split(".", 1))
        if not issubclass(search_model, Displayable):
            raise TypeError
    except TypeError:
        search_model = BlogPost#Displayable
        search_type =  _("blog.BlogPost")#_("Everything")
    else:
        search_type = search_model._meta.verbose_name_plural.capitalize()
    queryWithQuotes = '"%s"' % query
    results = search_model.objects.search(queryWithQuotes, for_user=request.user)

    filters = request.GET.get("filter", '')
    filter_arr = []
    if filters != '':
        filter_arr = filters.split('-')
    filter_sum = ''
    if len(filter_arr) > 0:
        for i in range(len(filter_arr)):
            if is_valid_search_filter(filter_arr[i]):
                if i == 0:
                    filter_sum += filter_arr[i].lower()+'_average'
                else:
                    filter_sum += '+' + filter_arr[i].lower()+'_average'

    if filter_sum != '': 
        '''
        If filters are apllied, order vendors by sum of the filter parameter values.
        In case filter values are equal, order them as per their overall average.
        For now tie between equal overall_average is not broken. To break add more parameters ahead in order of priority.
        '''
        results = results.extra(select={'filtersum': filter_sum,
                                                     'fieldsum':'price_average + website_ex_average + quality_average + service_average',
                                                     'followers': 'SELECT COUNT(*) FROM %s WHERE target_blogpost_id=%s.id' % (Follow._meta.db_table, table_name)},
                                                     order_by=('-filtersum', '-overall_average', '-fieldsum', '-comments_count', '-followers',)).distinct()
    else:
        '''
            In absence of any filters, order vendors by overall_average by default.
        '''
        results = results.extra(select={'fieldsum':'price_average + website_ex_average + quality_average + service_average',
                                        'followers': 'SELECT COUNT(*) FROM %s WHERE target_blogpost_id=%s.id' % (Follow._meta.db_table, table_name)},
                                        order_by=('-overall_average', '-fieldsum', '-comments_count', '-followers',)).distinct()

    #results.sort(searchComparator, reverse=True)
    paginated = paginate(results, page, per_page, max_paging_links)
    context = {"query": query, "results": paginated,
               "search_type": search_type}
    return render(request, template, context)