如何在Django中创建可重用的模板？ [英] How to make a reusable template in Django?
问题描述
示例：假设我的许多网页包含最新消息框并遵循DRY原则，我想定义一次，并在其他页面中重用它。如何使用Django（或 Jinja2 ）模板进行此操作？
通过 Django的模板文档阅读我得到的印象是，Django模板提供自上而下的继承，子模板本身确定要嵌入的超级模板：
<！ - 超级模板（无效，图示）： - >
< html>
< head>< title>标题< / title>< / head>
< body> {％block content％} {％endblock％}< / body>
< / html>
<！ - 子模板： - >
{％extendsbase.html％}
{％block content％}
< div class =latest-news>新闻< / div>
{％endblock％}
那么重用块的技术是什么
重用模板片段的最灵活方式是< a href =https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#inclusion-tags>定义一个inclusion_tag 。您可以将参数传递到您的自定义标签，在Python中处理它们，然后弹回到模板。 直接包含仅适用于不依赖于周围环境的片段。
文档的快速示例：
在 app / templatetags / poll_extras.py 注册带有装饰的标签：
从django导入模板
register = template.Library （）
@ register.inclusion_tag（'results.html'）
def show_results（poll）：
choice = poll.choice_set.all（）
return { 'choice'：choices}
在 app / templates / results.html ：
< ul>
{％在选择中选择％}
< li> {{choice}}< / li>
{％endfor％}
< / ul>
调用标签：
{％load poll_extras％}
{％show_results poll％}
What is the Django way of creating a reusable template?
Example: Suppose a lot of my pages contain a "Latest News" box and following the DRY principle, I would like to define it once and reuse it in the other pages. How would I do this with Django (or Jinja2) templates?
Reading through Django's Template Documentation I get the impression that Django templates offer "top-down" inheritance where the sub-template itself determines in which super-template it is going to be embedded:
<!-- Super-template (not valid, for illustration): -->
<html>
<head><title>Title</title></head>
<body>{% block content %}{% endblock %}</body>
</html>
<!-- Sub-template: -->
{% extends "base.html" %}
{% block content %}
<div class="latest-news">News</div>
{% endblock %}
So what is the technique to reuse a block (a sub-template) in several places?
The most flexible way to reuse template fragments is to define an inclusion_tag. You can pass arguments to your custom tag, process them a bit in Python, then bounce back to a template. Direct inclusion only works for fragments that don't depend on the surrounding context.
Quick example from the docs:
In app/templatetags/poll_extras.py register the tag with a decoration:
from django import template
register = template.Library()
@register.inclusion_tag('results.html')
def show_results(poll):
choices = poll.choice_set.all()
return {'choices': choices}
In app/templates/results.html:
<ul>
{% for choice in choices %}
<li> {{ choice }} </li>
{% endfor %}
</ul>
Calling the tag:
{% load poll_extras %}
{% show_results poll %}
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