python - how to set custom forloop start point in django template

Question

There is a forloop in java where i can tell where to start and where to end:

for(int i=10;i<array.length;i++){

}

but how can i implement this int i=10 in django template? How can i set the starting and ending point on my own?

there is a forloop.first and forloop.last, but they are defined inside the loop and i cannot do something like this?:

{{forloop.first=10}}

{% for athlete in athlete_list %}
    <li>{{ athlete.name }}</li>
{% endfor %}

{{forloop.last=20}}

I read the django doc but this feature seems to be not there

score 7 · Accepted Answer

如何使用内置切片过滤器：

{% for athlete in athlete_list|slice:"10:20" %}
    <li>{{ athlete.name }}</li>
{% endfor %}

如果你需要创建一个数字循环（就像 python 的range），你需要一个自定义模板标签，像这样：http ://djangosnippets.org/snippets/1926/

查看其他range片段：

另见：

顺便说一句，这听起来不像是模板的工作——考虑从视图中传递一个范围。而且，仅供参考，有人提议制作这样的标签，但它被拒绝了，因为it is trying to lead to programming in the template.- 考虑一下。

1 回答 1