将切片过滤器与来自 Django QuerySet 的上下文数据一起使用 [英] Using the slice filter with context data from a Django QuerySet

问题描述

我正在尝试使用模板中的此 html 代码将模型中的列表拆分为两列:

<代码>
{{value.Site}}</a></ul>{% 结束为 %}

我打算使用 slice 标签来过滤列表，例如:

{%for value in object_list|slice:"10:20" %}

但是它不起作用，我认为这可能是因为我有上下文数据，即 {{value.Site}}，而不是例如 {{Site}}.这是对应的视图:

class homeview(ListView):模板名称 = 'annual_means/home.html'def get_queryset(self):return AnnualMean.objects.values("Site", "url").distinct()

我需要做什么才能让切片工作?

解决方案

我想，你需要的是:

<tr><th>URL</th><th>站点</th></tr>{% for value in object_list %}<tr><td><a href="/sites/{{value.url}}/">{{value.url}}</a></td><td>{{value.Site}}</td></tr>{% 结束为 %}

URL 和站点将显示为表格.

I am trying to split a list from my model across two columns, using this html code in the template:

< div class ="col-md-6" >
{%for value in object_list %}
<ul>< ahref="/sites/{{value.url}}/">{{value.Site}}</a></ul>
{% endfor %}

I was planning to achieve this with the slice tag to filter the list, e.g.:

{%for value in object_list|slice:"10:20" %}

It does not work however, and I think it might be because I have context data i.e. {{value.Site}}, instead of just {{Site}} for example. This is the corresponding view:

class homeview(ListView):
    template_name = 'annual_means/home.html'

    def get_queryset(self):
        return AnnualMean.objects.values("Site", "url").distinct()

What do I need to do to get the slice to work?

解决方案

I think, what you need is this:

<table>
  <tr>
    <th>URL</th>
    <th>SITE</th>
  </tr>
  {% for value in object_list %}
  <tr>
    <td><a href="/sites/{{value.url}}/">{{value.url}}</a></td>
    <td>{{value.Site}}</td>
  </tr>
 {% endfor %}
</table>

URLs and Sites will be displayed as a table.

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