Django 模板 - 包含并重复块内容

Question

在我的 home.html 页面中，我试图包含一个 header.html 文件以及扩展 base.html。以下是我的代码

{% extends "base.html" %}

{% block body %}
   {% include 'header.html' %}

   # including the block navigation from header.html
   <nav id='header-nav'>{% block nav %} {% endblock %}</nav>

   # including the block image from header.html
   <div id='header-img'>{% block image %} {% endblock %}</div>

   # Reusing the same navigation in footer from header.html
   <div id='footer-nav'>{% block nav %} {% endblock %}</div>

{% endblock %}

Home.html 如下所示

{% block image %}<h1>I am image</h1>{% endblock %}
{% block nav %}<h1>I am navigation</h1>{% endblock %}

但是，它返回一个错误 - ''block' tag with name 'nav' 出现了不止一次'。

这是为什么呢？有什么解决办法吗？

问候

Answer 1

您在同一个模板中包含了两次 {% block nav %}。这就是它抛出错误的原因。也许你打算做 {% block footer %}？

{% extends "base.html" %}

{% block body %}
   {% include 'header.html' %}

   # including the block navigation from header.html
   <nav id='header-nav'>{% block nav %} {% endblock %}</nav>

   # including the block image from header.html
   <div id='header-img'>{% block image %} {% endblock %}</div>

   # Name this block something else i.e add a new block in header.html
   # and this error should clear up.
   <div id='footer-nav'>{% block footer %} {% endblock %}</div>

{% endblock %}