有没有一种方法可以将变量传递给Django中的“扩展"模板? [英] Is there a way to pass a variable to an 'extended' template in Django?

问题描述

我想为布局模板添加一些灵活性，但是找不到任何方法.

I want to add some flexibility to my layout template, but I can't find any way to do so.

我正在寻找一种使用变量扩展的布局模板的方法，即在模板树中向上而不是向下传递变量.

I'm looking for a way to extend my layout template with variable, i.e. to pass a variable up in the template tree, not down.

# views.py
def my_view_func(request):
    return render(request, "child.html")

---

# child.html
{% extends 'layout.html' with show_sidebar=True sidebar_width_class="width_4" %}

<div>Templates stuff here</div>

---

# layout.html
{% if show_sidebar %}
    <div class="{{ sidebar_width_class }}">
        {% block sidebar %}{% endblock %}
    </div>
{% endif %}

我必须维护四个模板，不同之处在于几行代码.例如，我有两个模板，每个模板的边栏宽度类彼此不同.我在做错什么吗?

I have to maintain four templates with a difference in a few lines of code. For example, I have two templates that differ from each other by a sidebar width class. Am I doing something wrong?

推荐答案

我怀疑 block 是您首先要寻找的东西.

I suspect that block is what you are looking for in the first place.

像这样在基本模板中形成块:

Form your block inside the base template like this:

{% block sidebar_wrapper %}
    {% if sidebar %}
    <div class="width{{sidebar_width}}">
        {% block sidebar %}{% endblock %}
    </div>
    {% endif %}
{% endblock sidebar_wrapper%}

在您的子模板上:

{% extends 'layout.html' %}
{% block sidebar_wrapper %}
    {% with sidebar=True sidebar_width=4 %}
        {{ block.super }}
    {% endwith%}
{% endblock sidebar_wrapper%}

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