为什么即使扩展了模板也要为每个模板加载静态文件？ [英] Why load staticfiles for every template even if it is extended?
问题描述
我有一个 base.html 文件，其中包含一些'random'html 代码，并且我具有以下代码：
I have a base.html file which has some 'random' html code and I have the following code:
{% load staticfiles %}
<!DOCTYPE html>
<html>
<head>
...
{% block extra_js_top %}{% endblock %}
</head>
...
</html>
在我的 index.html 文件中，我扩展了 base.html ，然后加载一些额外的javascript 文件：
In my index.html file I extend base.html and I load some extra javascript files:
{% extends "base.html" %}
...
{% block extra_js_top %}
<script type="text/javascript" src="{% static "js/somejs.js" %}"></script>
{% endblock %}
问题是由于以下原因，无法加载额外的JavaScript：静态变量即使我扩展了 base.html （在模板中包含 {％load staticfiles％} ），它也不会加载。最后，我解决了在 index.html 处再添加一个 {％load staticfiles％} 的问题。
The problem is that extra javascript doesn't load because of the static var. It doesn't load even if I extend base.html which have the {% load staticfiles %} inside the template. Finally I solved the problem adding one more {% load staticfiles %} at index.html.
我的问题是，即使扩展已有的模板，为什么还要为我们使用的每个模板添加 {％load staticfiles％} ？
My question is why we should add {% load staticfiles %} for every template we use even if we extend a file that has it already?
推荐答案
按照Django最新的文档，这样做是出于维护和理智的考虑
As per Django's latest documentation, this is done for the sake of maintainability and sanity
当加载自定义标签或过滤器库时，标签/过滤器仅可用于当前模板
，而不会包含任何父或子
模板
When you load a custom tag or filter library, the tags/filters are only made available to the current template – not any parent or child templates along the template-inheritance path.
例如，如果模板foo.html具有{％load humanize％}，则为子级
模板（例如，具有{％extended foo.html％}）的用户无法使用
访问人性化模板标签和过滤器。子模板
负责自己的{％load humanize％}。
For example, if a template foo.html has {% load humanize %}, a child template (e.g., one that has {% extends "foo.html" %}) will not have access to the humanize template tags and filters. The child template is responsible for its own {% load humanize %}.
此功能是为了保持可维护性和合理性。
This is a feature for the sake of maintainability and sanity.
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