英文:
Get item from Django model into HTML
问题
我想在模型models.py中的每个通知中包含标题和消息。我不想更改我所有的views.py来实现这一点。我知道可以使用标签{% request.user.name %}来获取用户的详细信息，但如何在另一个随机模型中实现呢？
我已经尝试了一些方法。以下是我尝试做出更改/创建的文件。
（home是我的应用程序的名称）
home/templatetags/__init__.py
from .custom_tags import register
home/templatetags/custom_tags.py
from django import templatefrom home.models import Notificationsregister = template.Library()@register.simple_tagdef notifications():data = Notifications.objects.all()return data
home/templates/base.html
{% load custom_tags %}<html><head><!-- 这里有一些代码 --></head><body><!-- 这里有更多的代码 -->{% notifications %}{% for notification in notifications_list %}{{ notification.title }}{% endfor %}</body>
在base.html中，{% notifications %}这一行显示为<QuerySet [<Notifications: Notifications object (1)>]>。但所有其他行都没有显示任何内容。
有人可以告诉我我做错了什么吗？
英文:
I want to include the title and message from every notification in the model Notifications from models.py. I don't want to have to change every single views.py that I have to do this. I know that it's possible to put the tag {% request.user.name %} to get details from the user, but how can I do this with another random model?
I have already tried some things.
These are the files that I created/changed in an attempt to do this.
(home is the name of my app)
home/templatetags/__init__.py
from .custom_tags import register
home/templatetags/custom_tags.py
from django import templatefrom home.models import Notificationsregister = template.Library()@register.simple_tagdef notifications():data = Notifications.objects.all()return data
home/templates/base.html
{% load custom_tags %}<html><head><!-- Some code here --></head><body><!-- Some more code here -->{% notifications %}{% for notification in notifications_list %}{{ notification.title }}{% endfor %}</body>
In base.html, the line {% notifications %} shows <QuerySet [<Notifications: Notifications object (1)>]>. But all of the other lines don't do anything.
Can anyone tell me what I'm doing wrong?
答案1
得分: 2
一个解决方案是在自定义标签内部呈现html，并使用属于该标签的小型html模板将其返回：~~~@register.simple_tagdef notifications():data = Notifications.objects.all()context = {"data": data}return render_to_string("...../notification_tag.html", context)~~~然后在base.html中使用：~~~<body><!-- 这里还有一些其他代码 -->{% notifications %}</body>~~~
英文:
One solution is to render html inside the custom tag with a small html template belonging to the tag and return it:
@register.simple_tagdef notifications():data = Notifications.objects.all()context = {"data": data}return render_to_string("...../notification_tag.html", context)
in the base.html then just use:
<body><!-- Some more code here -->{% notifications %}</body>
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