Django'include'语句中的多行字符串 [英] Multi line string in Django 'include' statement
问题描述
我正在尝试对Django模板进行干燥处理，并且将一些代码与CSS混合在一起，以实现简单的悬停弹出式窗口。我想重用代码，但是弹出窗口的内容将是HTML，它们可能会跨越多行。
I'm trying to be DRY with my Django templates, and have some code that I mix with CSS for a simple hover-over popup. I'd like to reuse the code, but the contents of my popup will be HTML that may well span over multiple lines. Is it possible to stuff multi-line strings into a template variable?
我尝试用块和 block.super ，但这似乎只有在扩展时才起作用（不是 include ）
I tried doing something funky with blocks and block.super but that only seems to work when extending (not include)
以下是我的例子d想做。
Here's an example of what I'd like to do. Is it possible?
index.html
<body>
<h2>My Popup</h2>
{% include "snippets/popup.html" with class="p" spantext="Hover me" popupdiv="""
<h2>This is a popup!</h2>
<ul>
<li>Something</li>
<li>Something else</li>
</ul>
"""
%}
</body>
snippets / popup.html
<div class="{{ class }}">
<span class='pointer'>{{ spantext }}</span>
<div class="popup">
{{ popupdiv }}
</div>
</div>
我知道在Django中不可能有多行模板标签，但是有什么办法解决除了将我所有的div html压缩到一行并转义任何引号之外？
I know it's not possible to have multi-line template tags in Django, but is there any way round this, other than squashing all my div html onto one line, and escaping any quotes?
干杯
推荐答案
事实证明，解析直到另一个模板标签才是我想要的。 http://www.djangobook.com/en/2.0/chapter09.html
It turns out "Parsing until another template tag" is what I was after. http://www.djangobook.com/en/2.0/chapter09.html
这是我的代码：
tags.py （在 templatetags 文件夹中）
from django import template
from django.template.loader import get_template
from django.template.base import Node, TemplateSyntaxError
register = template.Library()
class PopupNode(Node):
def __init__(self, nodelist, class_name, spantext):
self.nodelist = nodelist
self.class_name = class_name
self.spantext = spantext
def render(self, context):
popup_html = get_template("ordersystem/snippets/popup.html")
context.update({
'class' : self.class_name,
'spantext' : self.spantext,
'popupdiv' : self.nodelist.render(context)
})
return popup_html.render(context)
@register.tag('popup')
def show_popup(parser, token):
nodelist = parser.parse(('endpopup',))
tokens = token.split_contents()
if len(tokens) != 4:
raise TemplateSyntaxError("show_popup is in the format 'popup with class=X spantext=Y")
try:
context_extras = [t.split("=")[1].strip('"') for t in tokens[2:]]
except IndexError:
raise TemplateSyntaxError("show_popup is in the format 'popup with class=X spantext=Y")
parser.delete_first_token()
return PopupNode(nodelist, *context_extras)
然后在我的html文件中，我可以这样做：
Then within my html file I can just do:
{% popup with class_name=management spantext=Manage %}
<h2>This is a popup!</h2>
<ul>
<li>Something</li>
<li>Something else</li>
</ul>
{% endpoup %}
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