【愚公系列】2022年01月 Python教学课程 50-Django框架之类视图

from django.views.generic import View

class RegisterView(View):
    """类视图：处理注册"""

    def get(self, request):
        """处理GET请求，返回注册页面"""
        return render(request, 'register.html')

    def post(self, request):
        """处理POST请求，实现注册逻辑"""
        return HttpResponse('这里实现注册逻辑')

urlpatterns = [
    # 视图函数：注册
    # url(r'^register/$', views.register, name='register'),
    # 类视图：注册
    re_path(r'^register/$', views.RegisterView.as_view(), name='register'),
]

@classonlymethod
def as_view(cls, **initkwargs):
    """
    Main entry point for a request-response process.
    """
    ...省略代码...

    def view(request, *args, **kwargs):
        self = cls(**initkwargs)
        if hasattr(self, 'get') and not hasattr(self, 'head'):
            self.head = self.get
        self.request = request
        self.args = args
        self.kwargs = kwargs
        # 调用dispatch方法，按照不同请求方式调用不同请求方法
        return self.dispatch(request, *args, **kwargs)

    ...省略代码...

    # 返回真正的函数视图
    return view


def dispatch(self, request, *args, **kwargs):
    # Try to dispatch to the right method; if a method doesn't exist,
    # defer to the error handler. Also defer to the error handler if the
    # request method isn't on the approved list.
    if request.method.lower() in self.http_method_names:
        handler = getattr(self, request.method.lower(), self.http_method_not_allowed)
    else:
        handler = self.http_method_not_allowed
    return handler(request, *args, **kwargs)

class CenterView(View):

    def get(self,request):
        return HttpResponse("OK")

    def post(self,request):
        return HttpResponse("OK")

class CenterView(LoginRequireMixin,View):

    def get(self,request):
        return HttpResponse("OK")

    def post(self,request):
        return HttpResponse("OK")