05.模板显示

django模板系统基本语法
变量标签:{{variable_name}}
for循环标签{%for x in list %},{% endfor %}
if-else标签{% if %},{%.else %},{% endif %}
举个栗子:
<ul>
    {% for item in list %}
        <li>{{item}</li>
    {% endfor %}
</ul>

{% if true %}
    <p>it is a true part</p>
{% else %}
    <p>it is a false part</p>
{% endif %}


//设置template路径setting.py
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'userapp',
    'learnproject' //设置app
]
TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR/'templates'], //设置路径
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]
// 渲染视图 views.py
def renderIndex(request):
    users = User.objects.all()
    name=request.GET['geo']
    return render(request, 'season1/index.html', {
    'Users': users
})

def hello3(request,userid):
    if request.method == 'GET':
        //do_something()
    elif request.method == 'POST':
        //do_something_else()
    name= request.GET['name']
    user_list = User.objects.all()
    peiqi = None
    for user in user_list:
        if int(user.uid) == userid:
            peiqi = user
            break
    if peiqi == None:
        return HttpResponse("你好呀，404")    
    return HttpResponse("你好呀，%s"%(peiqi.nick))
    
//urls.py
urlpatterns = [
    path('admin/', admin.site.urls),
    path('hello/', views.hello),
    path('hello2/',views.hello_db)，
    path('/',views.renderIndex),
    path('hello/<int:userid>',views.views.hello3)
]
05.模板显示 ​

05.模板显示
