为什么要为每个模板加载静态文件，即使它已被扩展？
[英]Why load staticfiles for every template even if it is extended?
问题描述
I have a base.html file which has some 'random' html code and I have the following code: 
我有一个base.html文件，其中包含一些“随机”HTML代码，我有以下代码：
{% load staticfiles %}
<!DOCTYPE html>
<html>
<head>
...
{% block extra_js_top %}{% endblock %}
</head>
...
</html>
In my index.html file I extend base.html and I load some extra javascript files: 在我的index.html文件中，我扩展了base.html并加载了一些额外的javascript文件：
{% extends "base.html" %}
...
{% block extra_js_top %}
<script type="text/javascript" src="{% static "js/somejs.js" %}"></script>
{% endblock %}
The problem is that extra javascript doesn't load because of the static var. 问题是因为静态var而无法加载额外的javascript。 It doesn't load even if I extend base.html which have the {% load staticfiles %} inside the template. 即使我在模板中扩展了具有{% load staticfiles %} base.html ，它也不会加载。 Finally I solved the problem adding one more {% load staticfiles %} at index.html . 最后，我解决了在index.html中再添加一个{% load staticfiles %}的问题。
My question is why we should add {% load staticfiles %} for every template we use even if we extend a file that has it already? 我的问题是为什么我们应该为我们使用的每个模板添加{% load staticfiles %} ，即使我们已经扩展了已经存在的文件？
3 个解决方案
解决方案1
19 已采纳 2017-01-27 14:03:46
As per Django's latest documentation , this is done for the sake of maintainability and sanity 根据Django的最新文档 ，这是为了可维护性和理智性
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.
For example, if a template foo.html has {% load humanize %}, a child template (eg, one that has {% extends "foo.html" %}) will not have access to the humanize template tags and filters.
This is a feature for the sake of maintainability and sanity.
解决方案2
3 2013-01-03 15:16:45
Because that's the way template tags work. 因为这是模板标签的工作方式。 You need to load each library for every template file that uses them. 您需要为每个使用它们的模板文件加载每个库。
解决方案3
0 2014-02-23 17:10:32
It's logical that you'll need {% load staticfiles %} wherever you want url expansion to occur. 在您希望网址扩展发生的任何地方，您都需要{% load staticfiles %} ，这是合乎逻辑的。 If you have that happening in both base.html & index.html , you'll have to include it at both places (as you've already figured). 如果您在base.html和index.html都有这种情况，那么您必须在两个地方都包含它（正如您已经想到的那样）。
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