Django视图.py：在基于类的视图中通过分类选择来更新分页

Question

这个问题有点复杂。 事实上，我并不是要重新发明轮子，而且自从后端开发人员离开后，我正在尽力不破坏他的代码。在

但是，我想这次我需要改变很多事情。或者答案很简单，我的经验湖与我作对。在

基本上，我有一个可以按类别排序的文章列表。在

我在网址中这样排序：

urlpatterns = patterns(
  '',
  url(r'^$', ArticleListView.as_view(), name='articles-list'),
  url(r'^source/(?P<source>[\w\.@+-]+)/$', SourceEntriesView.as_view(), name='articles-source'),
  url(r'^date/(?P<daterealization>[\w\.@+-]+)/$', DateEntriesView.as_view(), name='articles-date'),
  url(r'^country/(?P<region>[\w\.@+-]+)/$', RegionEntriesView.as_view(), name='articles-region'),
  url(r'^global/$', GlobalEntriesView.as_view(), name='articles-global'),
)

主URL是mydomain.com/en/press/

因此，基本上，当我尝试按来源对我的文章进行排序时，我会按这个类别显示我的文章。但是分页仍然包含所有的文章。在

因此，如果类别中只有一篇文章，那么只显示这篇文章，但是我的“loadMore按钮”没有被禁用，因为它考虑到后面还有更多的文章。在

这是校长们视图.py基类视图，首先是基类：

^{pr2}$

和通用列表项视图：

#Main article display view 
class ArticleListView(FormMixin, BaseArticleView, BaseArticleListView, ContextSourcesMixin):
  model = Article
  view_url_name = 'djangocms_press:articles-list'
  form_class = SourcesRegionsFilterForm

  def get_form_kwargs(self):
    return {
        'initial': self.get_initial(),
        'prefix': self.get_prefix(),
        'data': self.request.GET or None,
        'request': self.request,
    }

  def get(self, request, *args, **kwargs):
    """
    Handle the form submissions to filter by Sources and regions
    First_object is use for pagination
    """
    context = {}

    self.object_list = self.get_queryset().order_by("-date_realization")

    first_object = 0

    if 'article' in self.request.GET:
        try:
            project_id = int(request.GET['article'])
            context['article_render'] = self.object_list.get(pk=project_id)
        except (Article.DoesNotExist, ValueError):
            pass

    form = self.get_form(self.form_class)

    if form.is_valid():
        if form.cleaned_data['regions']:
            self.object_list = self.object_list.filter(
                Q(regions__continent=form.cleaned_data['regions']) | Q(global_regions=True)).distinct()

    context.update(self.get_context_data(form=form))

    context[self.context_object_name] = context['object_list']

    source_qs = ArticleSource.objects.active_translations(get_language()).order_by('translations__name')
    date_realization_for_articles = Article.objects.values_list('date_realization',
                                                        flat=True).distinct()
    region_for_articles = Country.objects.exclude(regions_press_article=None).order_by('name')

    context['load_more_url'] = self.get_load_more_url(request, context)
    context['dates_realization'] = date_realization_for_articles.dates('date_realization', 'month', order="DESC")
    context['sources_list'] = source_qs
    context['regions_list'] = region_for_articles

    return self.render_to_response(context)

  def render_to_json_response(self, context, **response_kwargs):
    if 'current_app' not in context:
        context['current_app'] = resolve(self.request.path).namespace

    c = RequestContext(self.request, context)

    html_items_list = render_to_string(
        'base_templates/template_press.html',
        context,
        context_instance=c)

    html_items_list = html_items_list.strip()

    json_response = {
        'html_items_list': html_items_list,
        'load_more_url': self.get_load_more_url(self.request, context),
    }

    return JsonResponse(json_response)

  def render_to_response(self, context):
    if self.request.is_ajax():
        response = self.render_to_json_response(context)
    else:
        response = super(ArticleListView, self).render_to_response(context)
    return response

您可以看到loadmore按钮在以下行更新：

context['load_more_url'] = self.get_load_more_url(request, context)

最后结束管理排序的源的类：

class SourceEntriesView(ContextSourcesMixin, BaseArticleView, BaseArticleListView):
  context_object_name = 'article_list'
  template_name = 'base_templates/template_press.html'
  _source = None
  view_url_name = 'djangocms_press:articles-source'

  def get(self, *args, **kwargs):
    # submit object to cms toolbar to get correct language switcher behavior
    if hasattr(self.request, 'toolbar'):
        self.request.toolbar.set_object(self.source)
    return super(SourceEntriesView, self).get(*args, **kwargs)

  @property
  def source(self):
    if not self._source:
        try:
            source_qs = ArticleSource.objects.active_translations(
                get_language(),
                slug=self.kwargs['source']
            )

            #source_qs = source_qs.filter(site=Site.objects.get_current().pk)
            self._source = source_qs.latest('pk')

        except ArticleSource.DoesNotExist:
            raise Http404("ArticleSource does not exist for this site")
    return self._source

  def get_queryset(self):
    qs = super(SourceEntriesView, self).get_queryset()
    if 'source' in self.kwargs:
        qs = qs.filter(sources__pk=self.source.pk)
    return qs

  def get_context_data(self, **kwargs):
    kwargs['source'] = self.source
    context = super(SourceEntriesView, self).get_context_data(**kwargs)
    return context

所以，最后一个类是在选择源代码时从URL调用ajax。但是如何从这里更新加载更多按钮呢？我太迷路了。在

在阅读了关于分页和基类视图的文档之后，我的结论是删除这些行。但我害怕把一切都弄坏，我不能使它正常工作。在

所以，我的问题是更新分页以便按对象的某些类别排序的最佳方法是什么？在

提前谢谢你，至少感谢你花在我的请求上的时间。在

Answer 1

所以，因为它相当复杂（但最后不是），我重写了所有的东西。在

现在它又开始工作了，回到了美好的一天（再次擦除/编码）。在

感谢所有花时间阅读我的请求的人，即使不幸的是没有人能给予答复！在