03-views.md

03. Views

Views

뷰는 Django 어플리케이션이 특정 기능과 템플릿을 제공하는 웹페이지의 종류

polls/views.py

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse, Http404
from django.template import loader
from .models import Question


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


def detail(request, question_id):
    # 객체가 존재하지 않으면 Http404 에러 발생하는 메서드
    question = get_object_or_404(Question, pk=question_id)
    return render(request, 'polls/detail.html', {'question': question})


def results(request, question_id):
    response = f"You're looking at the results of question {question_id}"
    return HttpResponse(response)


def vote(request, question_id):
    return HttpResponse(f"You're voting on question {question_id}")

polls/urls.py

from django.urls import path
from . import views

app_name = 'polls'  # URL의 이름공간
urlpatterns = [
    # ex: /polls/
    path('', views.index, name='index'),

    # ex: /polls/5/
    path('<int:question_id>/', views.detail, name='detail'),

    # ex: /polls/5/results/
    path('<int:question_id>/results/', views.results, name='results'),

    # ex: /polls/5/vote/
    path('<int:question_id>/vote/', views.vote, name='vote'),
]

polls/templates/polls/index.html

{% if latest_question_list %}
  <ul>
    {% for question in latest_question_list %}
      <li><a href="{% url 'polls:detail' question.id %}">{{ question.question_text }}</a></li>
    {% endfor %}
  </ul>
{% else %}
  <p>No polls are available.</p>
{% endif %}

polls/templates/polls/detail.html

<h1>{{ question.question_text }}</h1>
<ul>
{% for choice in question.choice_set.all %}
    <li>{{ choice.choice_text }}</li>
{% endfor %}
</ul>