Python/Django以正确的方式处理HTTP请求

Question

几天前，我决定学习Python / Django，并在我的一个私人项目中使用它。我已经做了djangoproject教程1-6在构建‘民意测验’应用程序，现在转到做的事情，我自己。

简单的问题-我想要一个端点来查看，创建，编辑和删除‘交易’。

到目前为止，我在views.py中有以下内容

from django.views import generic
from django.http import HttpResponseRedirect
from django.views.generic.edit import CreateView
from django.core.urlresolvers import reverse

from .models import Deal

class IndexView(generic.ListView):
    context_object_name = 'latest_deals_list'

    def get_queryset(self):
        return Deal.objects.order_by('-created_date')[:10]

class DetailView(generic.DetailView):
    model = Deal

class DealCreate(CreateView):
    model = Deal
    fields = ['title', 'url']

    def post(self, *args, **kwargs):
        title = self.request.POST["title"]
        url = self.request.POST["url"]

        try:
            deal = Deal(tite=title, url = url)
            deal.save()
        except Exception as e:
            print e

        return HttpResponseRedirect(reverse('deals:detail', args=(deal.id,)));

我的urls.py是这样的：

from django.conf.urls import url

from . import views

urlpatterns = [
    url(r'^$', views.IndexView.as_view(), name='index'),
    url(r'^(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),
    url(r'^create/$', views.DealCreate.as_view(), name='create')
]

这一切都很好，但我很难理解如何将它组织成更简洁的API类结构。我可以在一个路由中只使用/deals，然后使用不同的模板分别实现所有方法GET / POST / PUT / DELETE吗？我会在indexView中这样做，并且只在其他视图中打印表单吗？只是觉得我在/create中有POST方法是不对的，或者我想得太多了。

如有任何反馈，将不胜感激。

Answer 1

我意识到在ModelForm中使用基于功能的方法比使用GenericViews更好。使用表单验证工作的更新代码如下所示：

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

from .models import Deal
from .forms import DealForm

class IndexView(generic.ListView):
    context_object_name = 'latest_deals_list'

    def get_queryset(self):
        return Deal.objects.order_by('-created_date')[:10]

class DetailView(generic.DetailView):
    model = Deal

def add_model(request):

    form = DealForm(request.POST or None)
    if form.is_valid():
        deal = form.save()
        return HttpResponseRedirect(reverse('deals:detail', args=(deal.id,)));

    return render(request, "deals/deal_form.html", {'form': form, 'title': 'Add New Deal'})

def update_model(request, pk):

    deal = get_object_or_404(Deal, pk=pk)

    form = DealForm(request.POST or None, instance=deal)
    if form.is_valid():
        deal = form.save()
        return HttpResponseRedirect(reverse('deals:detail', args=(deal.id,)));

    return render(request, "deals/deal_form.html", {'form': form, 'title': 'Editing "' + deal.title + '"'})

def delete_model(request, pk):

    deal = get_object_or_404(Deal, pk=pk)

    if request.method == 'POST':
        deal.delete()
        return HttpResponseRedirect(reverse('deals:index'));

    return render(request, "deals/deal_confirm_delete.html", {'object': deal, 'title': 'Confirm deleting "' + deal.title + '"'})

urls.py：

from django.conf.urls import url

from . import views

urlpatterns = [
    url(r'^$', views.IndexView.as_view(), name='index'),
    url(r'^(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),
    url(r'^create/$', views.add_model, name='create'),
    url(r'^(?P<pk>[0-9]+)/edit/$', views.update_model, name='update'),
    url(r'^(?P<pk>[0-9]+)/delete/$', views.delete_model, name='delete')
]

和forms.py：

from django.forms import ModelForm
from .models import Deal

class DealForm(ModelForm):
    class Meta:
        model = Deal
        fields = ['title', 'url']