Django表单

最新推荐文章于 2025-09-13 23:06:41 发布

王爷的大房子

最新推荐文章于 2025-09-13 23:06:41 发布

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CC 4.0 BY-SA版权

文章标签： python

原文链接：http://www.cnblogs.com/yjlch1016/p/8707773.html

新建polls/templates/polls/detail.html

<h1>{{ question.question_text }}
</h1>

{% if error_message %}
<p>
 <strong>{{ error_message }}
</strong>
 </p>
{% endif %}

<form action="{% url 'polls:vote' question.id %}" method="post">
{% csrf_token %}
{% for choice in question.choice_set.all %}
<input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}">
 <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}
</label>
 <br>
{% endfor %}
<input type="submit" value="Vote">
</form>

新建polls/templates/polls/results.html

<h1>{{ question.question_text }}</h1>

<ul>
{% for choice in question.choice_set.all %}
<li>{{ choice.choice_text }} -- {{ choice.votes }} vote{{ choice.votes|pluralize }}</li>
{% endfor %}
</ul>

<a href="{% url 'polls:detail' question.id %}">Vote again?</a>

修改polls包里面的views.py

from django.http import HttpResponseRedirect
from django.shortcuts import get_object_or_404, render
from django.urls import reverse
from django.views import generic

from polls.models import Question, Choice


# Create your views here.


class IndexView(generic.ListView):
 template_name = 'polls/index.html'
 context_object_name = 'latest_question_list'

 def get_queryset(self):
"""返回最后五个已发布的问题."""
 return Question.objects.order_by('-pub_date')[:5]


class DetailView(generic.DetailView):
 model = Question
 template_name = 'polls/detail.html'


class ResultsView(generic.DetailView):
 model = Question
 template_name = 'polls/results.html'


def vote(request, question_id):
 question = get_object_or_404(Question, pk=question_id)
try:
 selected_choice = question.choice_set.get(pk=request.POST['choice'])
except (KeyError, Choice.DoesNotExist):
# 重新发布投票问题表单
 return render(request, 'polls/detail.html', {
'question': question,
 'error_message': "You didn't select a choice.",
 })
else:
 selected_choice.votes += 1
 selected_choice.save()
# 成功处理post数据后，始终返回HttpResponseRedirect
 # 如果用户点击后退按钮，这将防止两次发布数据。
 return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

修改polls包里面的polls_urls.py

from django.urls import path
from . import views

app_name = 'polls'

urlpatterns = [
 path('', views.IndexView.as_view(), name='index'),
 # 示例：/polls/

 path('<int:pk>/', views.DetailView.as_view(), name='detail'),
 # 示例：/polls/5/

 path('<int:pk>/results/', views.ResultsView.as_view(), name='results'),
 # 示例：/polls/5/results/

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