Django3

polls/urls.py

    # ex: /polls/
    url(r'^$', views.index, name='index'),
    # ex: /polls/5/
    url(r'^(?P[0-9]+)/$', views.detail, name='detail'),
    # ex: /polls/5/results/
    url(r'^(?P[0-9]+)/results/$', views.results, name='results'),
    # ex: /polls/5/vote/
    url(r'^(?P[0-9]+)/vote/$', views.vote, name='vote'),

polls/views.py

def index(request):
    return HttpResponse("Hello World")
    
def detail(request, question_id):
    return HttpResponse("You're looking at question %s." % question_id)

def results(request, question_id):
    response = "You're looking at the results of question %s."
    return HttpResponse(response % question_id)

def vote(request, question_id):
    return HttpResponse("You're voting on question %s." % question_id)

polls/views.py

from .models import Question
def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    output = ', '.join([q.question_text for q in latest_question_list])
    return HttpResponse(output)

新建模板文件

Paste_Image.png

index.html

{% if latest_question_list %}
    

    {% for question in latest_question_list %}
        
{{ question.question_text }}
    {% endfor %}
    
{% else %}
    
No polls are available.
{% endif %}

{{ question.question_text }}

pools/views.py

def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    template = loader.get_template('pools/index.html')
    context = {
        'latest_question_list': latest_question_list,
    }
    return HttpResponse(template.render(context, request))

pools/views.py

def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    context = {
        'latest_question_list': latest_question_list,
    }
    return render(request,'pools/index.html',context)