Bootstrap Carousel模板中分割Django Queryset [英] Split Django Queryset in template for Bootstrap Carousel

问题描述

我有一个模型横幅与字段图像和名称。我需要这个模型的数据，在一个移动的Bootstrap转盘上以三组显示。

I have a model Banner with fields image and name. I need data from this model to be displayed in groups of three on a moving Bootstrap carousel.

我目前的实现是我能想到的最昂贵和最简单的一个。

My current implementation is the most expensive and simple one I could think of.

banner1 = Banners.objects.filter（id__exact = 1）重复
模型。

banner1 = Banners.objects.filter(id__exact=1) repeated for 9 entries in the Model.

我的问题是可以拆分一个查询器
Banners.objects.all（）进入三组三个条目，然后如何在Bootstrap Carousel的三个不同幻灯片中显示三组？

My question is that is it possible to split one queryset Banners.objects.all() into the three groups of three entries and then how would I go about displaying the three groups across three different slides of the Bootstrap Carousel?

推荐答案

p>这似乎是一个使用django可分割过滤器的好地方。由于您需要每三个实例添加额外的分组信息，因此可能看起来像这样（非常抽象地，因为我不知道您的具体模板需求）：

This seems like a good place to use the django divisibleby filter. Since you need to add the extra grouping info every three instances, it could look something like this (very abstractly, since I don't know your specific template demands):

{% for banner in banners %}
{% if forloop.counter0|divisibleby:"3" %}
<!-- your carousel wrapping code here -->
{% endif %}
<!-- code for each individual banners here -->
{% if forloop.counter0|divisibleby:"3" %}
<!-- rest of your carousel wrapping code here -->
{% endif %}

其中横幅将是包含 Banners.objects.all（）

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