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| 1 | +# 03. Views |
| 2 | + |
| 3 | +## Views |
| 4 | +뷰는 Django 어플리케이션이 특정 기능과 템플릿을 제공하는 웹페이지의 종류 |
| 5 | + |
| 6 | +### `polls/views.py` |
| 7 | +```python |
| 8 | +from django.shortcuts import render, get_object_or_404 |
| 9 | +from django.http import HttpResponse, Http404 |
| 10 | +from django.template import loader |
| 11 | +from .models import Question |
| 12 | + |
| 13 | + |
| 14 | +def index(request): |
| 15 | + latest_question_list = Question.objects.order_by('-pub_date')[:5] |
| 16 | + context = {'latest_question_list': latest_question_list} |
| 17 | + return render(request, 'polls/index.html', context) |
| 18 | + |
| 19 | + |
| 20 | +def detail(request, question_id): |
| 21 | + # 객체가 존재하지 않으면 Http404 에러 발생하는 메서드 |
| 22 | + question = get_object_or_404(Question, pk=question_id) |
| 23 | + return render(request, 'polls/detail.html', {'question': question}) |
| 24 | + |
| 25 | + |
| 26 | +def results(request, question_id): |
| 27 | + response = f"You're looking at the results of question {question_id}" |
| 28 | + return HttpResponse(response) |
| 29 | + |
| 30 | + |
| 31 | +def vote(request, question_id): |
| 32 | + return HttpResponse(f"You're voting on question {question_id}") |
| 33 | +``` |
| 34 | + |
| 35 | +### `polls/urls.py` |
| 36 | +```python |
| 37 | +from django.urls import path |
| 38 | +from . import views |
| 39 | + |
| 40 | +app_name = 'polls' # URL의 이름공간 |
| 41 | +urlpatterns = [ |
| 42 | + # ex: /polls/ |
| 43 | + path('', views.index, name='index'), |
| 44 | + |
| 45 | + # ex: /polls/5/ |
| 46 | + path('<int:question_id>/', views.detail, name='detail'), |
| 47 | + |
| 48 | + # ex: /polls/5/results/ |
| 49 | + path('<int:question_id>/results/', views.results, name='results'), |
| 50 | + |
| 51 | + # ex: /polls/5/vote/ |
| 52 | + path('<int:question_id>/vote/', views.vote, name='vote'), |
| 53 | +] |
| 54 | +``` |
| 55 | + |
| 56 | +### `polls/templates/polls/index.html` |
| 57 | +```html |
| 58 | +{% if latest_question_list %} |
| 59 | + <ul> |
| 60 | + {% for question in latest_question_list %} |
| 61 | + <li><a href="{% url 'polls:detail' question.id %}">{{ question.question_text }}</a></li> |
| 62 | + {% endfor %} |
| 63 | + </ul> |
| 64 | +{% else %} |
| 65 | + <p>No polls are available.</p> |
| 66 | +{% endif %} |
| 67 | +``` |
| 68 | + |
| 69 | +### `polls/templates/polls/detail.html` |
| 70 | +```html |
| 71 | +<h1>{{ question.question_text }}</h1> |
| 72 | +<ul> |
| 73 | +{% for choice in question.choice_set.all %} |
| 74 | + <li>{{ choice.choice_text }}</li> |
| 75 | +{% endfor %} |
| 76 | +</ul> |
| 77 | +``` |
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