使用`With`标签反转Django模板中的布尔值？ [英] Use `With` Tag to invert a boolean in Django Template?

问题描述

我想传递一个值到 include 标签，该变量是传入的变量的OPPOSITE。

I want to pass a value to an include tag that is the OPPOSITE of a variable passed in.

这是我所尝试的（基本上）：

This is what I tried (basically):

{% with s_options as not disp %}
    {% include "e.html" with show_options=s_options only %}
{% endwith %}

有没有办法做我想要的？

Is there any way to do what I want?

推荐答案

不知道这是否是最好的解决方案，但我只是做了一个新的过滤器：

Not sure if this is the best solution, but I just made a new filter:

from django import template

register = template.Library()


@register.filter(name="not_value")
def not_value(true_value):
    return not true_value

然后做了：

{% load not_value %}
{% with s_options=disp|not_value %}  {# WILL NOT WORK WITH "as" #}
    {% include "e.html" with show_options=s_options only %}
{% endwith %}

请注意，po可以这样做（尽管我还没有尝试过）：

Note that, possibly, this might work as well (though I have not tried):

{% include "e.html" with show_options=s_options|not_value only %}

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