Django ListView 如何使用另一个上下文压缩上下文数据

Question

我正在尝试向我的 ListView 上下文添加一些上下文，并像这样使用 zip 在一个 for 循环中访问它们

class WeatherListView(ListView):
        """
        List view of Weather data
        """

template_name = "frontend/weather_list.html"
model = Weather

def get_context_data(self, **kwargs):
    weather_query = Weather.objects.all()
    temp_list = list(weather_query.values_list('temperature', flat=True))
    humidity_list = list(weather_query.values_list('humidity', flat=True))
    
    temp_list_compared = compare_item_to_previous(temp_list)
    humidity_list_compared = compare_item_to_previous(humidity_list)

    data = super().get_context_data(**kwargs)

    context = {
        "object_list": zip(data, temp_list_compared, humidity_list_compared)
    }

    return context

然后我想在循环模板中获取我的数据

{% for i in object_list %}
{{ i.0.some_field_in_original_context }}
{{ i.1 }}
{{ i.2 }}
{% endfor %}

但我最终得到的原始上下文 {{ i.0 }} 是这样的

paginator
page_obj
is_paginated

如何在将原始 ListView 数据放入 zip 后仍然访问它。

__

更新：

知道了，我需要将 object_list 压缩到原始上下文中 ListView 上下文如下所示：

 {'paginator': None, 'page_obj': None, 'is_paginated': False,
 'object_list': <QuerySet [<Weather: 2021-04-06 14:34:32.895936+00:00>,
                            <Weather: 2021-04-06 20:40:00.304090+00:00>,
                            <Weather: 2021-04-07 04:24:39.292096+00:00>]>,
'weather_list': <QuerySet [<Weather: 2021-04-06 14:34:32.895936+00:00>,
                            <Weather: 2021-04-06 20:40:00.304090+00:00>,
                            <Weather: 2021-04-07 04:24:39.292096+00:00>]>,
'view': <frontend.views.WeatherListView object at 0x7f4ec824b3d0>}

我的新上下文是：

context = {
            "object_list": zip(data["object_list"], temp_list_compared, humidity_list_compared)
        }

Answer 1

知道了，我需要将 object_list 压缩到原始上下文中 ListView 上下文如下所示：

 {'paginator': None, 'page_obj': None, 'is_paginated': False,
 'object_list': <QuerySet [<Weather: 2021-04-06 14:34:32.895936+00:00>,
                            <Weather: 2021-04-06 20:40:00.304090+00:00>,
                            <Weather: 2021-04-07 04:24:39.292096+00:00>]>,
'weather_list': <QuerySet [<Weather: 2021-04-06 14:34:32.895936+00:00>,
                            <Weather: 2021-04-06 20:40:00.304090+00:00>,
                            <Weather: 2021-04-07 04:24:39.292096+00:00>]>,
'view': <frontend.views.WeatherListView object at 0x7f4ec824b3d0>}

我的新上下文是：

context = {
            "object_list": zip(data["object_list"], temp_list_compared, humidity_list_compared)
        }

Django ListView 如何使用另一个上下文压缩上下文数据

Django ListView how to zip context data with another context

django

django-templates

django-template-filters