test4/urls.py
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('', include('booktest.urls', namespace='booktest'))
]
booktest/urls.py
from django.urls import path, re_path
from booktest import views
app_name = 'booktest'
urlpatterns = [
path('', views.index, name='index'),
re_path(r'^(\d+)$', views.show, name='show')
]
views.py
from django.shortcuts import render
from booktest.models import *
def index(request):
# 查询一个
# hero = HeroInfo.objects.get(pk=35)
# context = {'hero': hero}
# 查询列表（多个）
list = HeroInfo.objects.all()
# list = HeroInfo.objects.filter(isDelete=True)
context = {'list': list}
return render(request, 'booktest/index.html', context)
def show(request, id):
context = {'id': id}
return render(request, 'booktest/show.html', context)
show.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
{{ id }}
</body>
</html>
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
{# <a href="123">显示</a> #}
<a href="{% url 'booktest:show' 123 %}">显示</a>
<hr>
{# {{ hero.showname }} #}
{% for item in list %}
{{ forloop.counter }} ：{{ item.hname }} {# forloop.counter得到循环的第几次 #}
<hr>
{% empty %}
您查询的数据不存在!
{% endfor %}
</body>
</html>
- url：反向解析
{ % url 'name' p1 p2 %}
{% url 'booktest:show' 123 %} 其中booktest是test4/urls.py/namespace中的内容,
show是booktest/urls.py/name中的内容，
123是(\d+)需要传递的参数的内容
解释一下页面跳转：
index.html 中如果有 <a href="123">显示</a>
href中123地址。先到test4中匹配空即127.0.0.1:8000
因为有
include('booktest.urls', namespace='booktest')跳转到booktest.urls中
re_path(r'^(\d+)$', views.show, name='show')与(\d+)进行匹配即127.0.0.1:8000/123
再到views.py中找到show函数。
return render(request, 'booktest/show.html', context)跳转到show.html页面显示id