Django模板:通过扩展模板覆盖包含的子模板的块 [英] Django templates: overriding blocks of included children templates through an extended template
问题描述
我想知道是否有人知道如何处理以下古怪的模板结构:
I'm wondering if anyone knows how to deal with the following quirky template structure:
### base.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<head>
<title> {% block title %} Title of the page {% endblock %} </title>
</head>
<body>
<header>
{% block header %}
{% include "base/header.html" %}
{% endblock header %}
</header>
{% block content %}{% endblock %}
</body>
</html>
### base/header.html
<div id="menu-bar">
{% block nav %}
{% include "base/nav.html" %}
{% endblock %}
</div>
### base/nav.html
<nav id="menu">
<ul>
<li>
<a href="/profile/">My Profile</a>
</li>
<li>
<a href="/favs/">My Favorites</a>
</li>
{% block extra-content %}{% endblock %}
</ul>
</nav>
而且，问题的核心:
### app/somepage.html
{% extends "base.html" %}
{% block content %}
<p>Content is overridden!</p>
{% endblock %}
{% block extra-content %}
<p>This will not show up, though...</p>
{% endblock %}
{% block nav %}
<p>Not even this.</p>
{% endblock %}
问题在于扩展模板时，您只能覆盖仅在父级中声明的块，而不能覆盖其任何子级.
The problem is when extending a template you can only override the blocks declared in the parent only, not any of its children.
我想我可以将base.html做成空的，未使用的嵌套块的外壳，以覆盖所有将来的意外情况，但是即使这样也可以正确覆盖吗?那是唯一的方法吗?
I suppose I could make base.html a husk of empty unused nested blocks covering all future contingencies, but would even that override properly? And is that the only way?
如果您想知道为什么我在base.html周围有一个双向的include/extends工作流，那么我有很多子模板想要在整个项目中使用:页眉，页脚，导航，侧边栏等它们在整个站点上的结构都将是一致的，但是在许多情况下，站点的整个细分将只需要其中一些子模板.我的想法是在templates/base文件夹下定义子模板，并让templates/base-type1.html，templates/base-type2.html等扩展到其他位置.每种类型只会引用所需的子模板，并根据需要覆盖它们以放置内容.
If you're wondering why I have a bi-directional include/extends workflow around base.html, I have many sub-templates that I want to get used all across the project: Headers, footers, navs, sidebars, etc. They all will be consistant in structure across the entire site, but in many cases a whole subdivision of the site will only need a few of those sub-templates. My idea was to define the sub-templates under the templates/base folder, and have templates/base-type1.html, templates/base-type2.html, etc to extend in other places. Each type would only reference the sub-templates needed, and override them to place content as needed.
推荐答案
您可以通过扩展当前包含的模板，然后添加扩展名而不是当前包含的基本模板来解决此问题.
You can solve this by extending your currently-included templates, then including the extension instead of the the currently-included base template.
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