Question

我正在尝试使用django做一些简单易行的事情：

对项目列表进行分页。

所以，我有一个文章页面，我想每页最多显示10篇文章，下一页= 10篇下一篇文章等。

您可以按某些类别作为来源或日期订购。

所以，当我到达我的mydomaine.com/articles/时，我会显示所有元素。

如果我按来源排序，就像这个views.py显示：

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

@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
    return super(SourceEntriesView, self).get_context_data(**kwargs)

一旦ajax调用加载此视图并显示按源排序的文章，我就有了10个项目！（好吧，我在测试时尝试4）。

那么为什么它不在主页上工作呢。

以下是我的代码的更多解释：

''' Main article display view '''
class ArticleListView(FormMixin, BaseArticleListView, ContextSourcesMixin):
  model = Article
  context_object_name = 'article_list'
  template_name = 'base_templates/template_press.html'
  view_url_name = 'djangocms_press:articles-list'
  form_class = SourcesRegionsFilterForm
  paginate_by = get_setting('PAGINATION')


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

    context[self.context_object_name] = self.object_list
    context['object_list'] = self.object_list
    source_qs = ArticleSource.objects.active_translations(get_language())
    context['sources_list'] = source_qs
    date_realization_for_articles = Article.objects.values_list('date_realization',
                                                        flat=True).distinct()
    context['dates_realization'] = date_realization_for_articles.dates('date_realization', 'month', order="DESC")

    return self.render_to_response(context)

def get_load_more_url(self, request, context):
    args = request.GET.copy()
    return '?{}'.format(args.urlencode())

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

这是显示文章的主视图。

我的设置，非常简单但更易于使用：

def get_setting(name):
  from django.conf import settings
  from meta_mixin import settings as meta_settings

  default = {
    'PRESS_PAGINATION': getattr(settings, 'PRESS_PAGINATION', 4),
  }
  return default['PRESS_%s' % name]

我也尝试在文章列表网址中传递paginated_by，但结果是一样的。

这是模板的一部分，假设要进行分页：

    {% if article_list %}
    <div id="articles-list" class="col-md-12">
        {% for article in article_list %}
        <div class="row article">
            <div class="col-md-2">
                {{ article.date_realization|date:"F d, Y" }}
            </div>
            <div class="col-md-2">
                {{ article.source }}
            </div>
            <div class="col-md-2">
            {% for region in article.regions.all %}
                {{ region.name }}
            {% endfor %}
            </div>
            <div class="col-md-6">
                {{ article.title }}
            </div>
        </div>
        {% endfor %}
    </div>
    {% if is_paginated %}
    <section id="content-btn">
        <div id="load-more-btn blippar-white-btn" class="col-md-2 col-md-offset-5 col-xs-8 col-xs-offset-2" align="center">
                <a id="loadmore" role="button" class="button btn load-more-btn blippar-white-btn" href="{{ load_more_url }}">{% trans 'VIEW MORE' %}</a>
        </div>
    </section>

    <div class="col-lg-12">

        <span class="current">
            Page {{ page_obj.number }} of {{ page_obj.paginator.num_pages }}.
        </span>

        {% if page_obj.has_next %}
            <a href="?page={{ page_obj.next_page_number }}">next</a>
        {% endif %}

    </div>

    {% endif %}
{% endif %}

所以，我有两个问题：

为什么不在主要文章列表中显示？
为什么选择一个来源后，如果我点击＆＃34; next＆＃34;我的所有物品都显示出来了吗？

如果你有想法或反思导向，我会喜欢它：）

Answer 1

我假设您使用的是MultipleObjectMixin。

在这种情况下，当您致电context.update(self.get_context_data(form=form))时会发生分页。在那里查看来源：https://github.com/django/django/blob/master/django/views/generic/list.py

因此，当您调用此函数时，它会将上下文['object_list']设置为分页内容。不幸的是，当你调用context['object_list'] = self.object_list时，你会将它覆盖几行，因为self.object_list不会受到分页的影响。如果删除此行，则应该没问题。

编辑：因为看起来你使用'article_list'而不是'object_list'，所以这里还有其他评论：

在你的原始函数中，最后你有'page'引用了righ分页函数，'article_list'和'object_list'引用了我解释过的完整文章列表。
使用我的解决方案，您仍然保持'page'和'article_list'不变，但'object_list'指的是正确的分页列表。不幸的是，我没有注意到它不是你在模板中使用的那个。
所以现在你要做的就是用context[self.context_object_name] = self.object_list替换context[self.context_object_name] = context['object_list']，它会起作用：）

Answer 2

所以，目前我有一个临时解决方案：

<html>
<head>
<title>My first chart using FusionCharts Suite XT</title>
<script type="text/javascript" src="http://static.fusioncharts.com/code/latest/fusioncharts.js"></script>
<script type="text/javascript">
FusionCharts.ready(function () {
var revenueChart = new FusionCharts({
    type: 'doughnut2d',
    renderAt: 'chart-container',
    width: '450',
    height: '450',
    dataFormat: 'json',
    dataSource: {
        "chart": {
            "caption": "Homicides by Weapon",
            "subCaption": "USA 2013",
            "numberPrefix": "",
            "paletteColors": "#0075c2,#1aaf5d,#f2c500,#f45b00,#8e0000",
            "bgColor": "#ffffff",
            "showBorder": "0",
            "use3DLighting": "0",
            "showShadow": "0",
            "enableSmartLabels": "0",
            "startingAngle": "310",
            "showLabels": "0",
            "showPercentValues": "1",
            "showLegend": "1",
            "legendShadow": "0",
            "legendBorderAlpha": "0",
            "defaultCenterLabel": "Total homicides: 11583",
            "centerLabel": "Homicides from $label: $value",
            "centerLabelBold": "1",
            "showTooltip": "0",
            "decimals": "0",
            "captionFontSize": "14",
            "subcaptionFontSize": "14",
            "subcaptionFontBold": "0"
        },
        "data": [
            {
                "label": "Firearms",
                "value": "8454"
            },
            {
                "label": "Knives or cutting instruments",
                "value": "1490"
            },
            {
                "label": "Personal Weapons (hands, fists, etc.)",
                "value": "687"
            },
            {
                "label": "Other",
                "value": "952"
            }


        ]
    }
}).render();
});
</script>
</head>
<body>
 <div id="chart-container">FusionCharts will render here</div>
</body>
</html>

而不是：

{% for article in page_obj.object_list %}
        <div class="row article">
            <div class="col-md-2">
                {{ article.date_realization|date:"F d, Y" }}
            </div>
            <div class="col-md-2">
                {{ article.source }}
            </div>
            <div class="col-md-2">
            {% for region in article.regions.all %}
                {{ region.name }}
            {% endfor %}
            </div>
            <div class="col-md-6">
                {{ article.title }}
            </div>
        </div>
        {% endfor %}

article_list成为了object_list。我对此并不满意，因为当我阅读文档时，这不是必要的。

Django分页返回所有元素，但仍然是分页

2 个答案: