我正在开发一个webapp，我想将视图中的逻辑移到表单中。在视图中我只想继续检查验证。那是：
例：
def myformview(request):
if request.POST:
form = MForm(request.POST)
if form.is_valid():
form.save()
redirect("to-some-view")
render(request, "template_name.html", {
'form': form
})
这是我的views.py：
def login_user(request):
if request.method == 'POST':
login_form = Login(request.POST)
if login_form.is_valid():
email = login_form.cleaned_data['email']
password = login_form.cleaned_data.get('password')
user = authenticate(email=email, password=password)
if user in User.objects.all():
login(request, user)
return HttpResponseRedirect(reverse('dashboard'))
else:
return render(request, 'todoapp/waiting_2.html')
return render(request, 'registration/login.html', {'form': Login()})
这是我的forms.py：
class Login(forms.Form):
email = forms.EmailField(max_length=250)
password = forms.CharField(widget=forms.PasswordInput)
一切都工作正常。我只想将视图中的逻辑移到表单中。而已。
编辑：我改变了我的forms.py和views.py但它仍然无法正常工作，我得到一个Page Not Found 404错误。
这是我的新forms.py：
class Login(forms.Form):
email = forms.EmailField(max_length=250)
password = forms.CharField(widget=forms.PasswordInput)
def login_user(self):
email = self.cleaned_data['email']
password = self.cleaned_data.get('password')
user = authenticate(email=email, password=password)
if user in User.objects.all():
login(self, user)
else:
return render(self, 'todoapp/waiting_2.html')
这是我的新views.py ::
def login_user(request):
if request.method == 'POST':
login_form = Login(request.POST)
if login_form.is_valid():
return HttpResponseRedirect(reverse('dashboard'))
else:
return render(request, 'todoapp/waiting_2.html')
return render(request, 'registration/login.html', {'form': Login()})
这是我的urls.py：
from django.conf.urls import url
from .import views
urlpatterns = [
url(r'^index/', views.index, name='index'),
url(r'^register/', views.register, name='register'),
url(r'^login/', views.login_user, name='login_user'),
url(r'^dashboard/', views.dashboard, name='dashboard'),
url(r'^logout_user/', views.logout_user, name='logout_user'),
url(r'^auth_users/', views.auth_users, name='auth_users'),
# url(r'^authorize_final', views.authorize_final, name='authorize_final'),
url(r'^assigntask', views.assigntask, name='assigntask'),
# url(r'^assign', views.assign, name='assign'),
url(r'^task_list', views.view_task_list, name='view_task_list'),
# url(r'^delete_task', views.delete_task, name='delete_task'),
]
我得到的错误是：
AttributeError at /login/
'Login' object has no attribute 'session'
追溯：
File "/home/gblp250/PycharmProjects/practice/venv/local/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
41. response = get_response(request)
File "/home/gblp250/PycharmProjects/practice/venv/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/home/gblp250/PycharmProjects/practice/venv/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/gblp250/PycharmProjects/assignment/todoapp/views.py" in login_user
48. login_form.login_user(request)
File "/home/gblp250/PycharmProjects/assignment/todoapp/forms.py" in login_user
27. login(self, request, user)
File "/home/gblp250/PycharmProjects/practice/venv/local/lib/python2.7/site-packages/django/contrib/auth/__init__.py" in login
126. if SESSION_KEY in request.session:
Exception Type: AttributeError at /login/
Exception Value: 'Login' object has no attribute 'session'
为此，您可以在表单中覆盖is_valid方法（请参阅this link）并将逻辑放在那里，但是，更合适的方法是在视图中使用基于类的视图FormView并对其进行操作。
请参阅this link作为了解FormView基于类的方法的开始。一旦您了解了如何使用它，这将大大简化该过程。
编辑：
这整体看起来很好，但仍然有错误的逻辑实现
class Login(forms.Form):
email = forms.EmailField(max_length=250)
password = forms.CharField(widget=forms.PasswordInput)
def login_user(self, request):
email = self.cleaned_data['email']
password = self.cleaned_data.get('password')
user = authenticate(request, email=email, password=password)
if user:
login(request, user) // self should have been replaced by request
else:
return HttpResponseRedirect(reverse('view_task_list'))//You can redirect to any url
这是我的新views.py ::
def login_user(request):
if request.method == 'POST':
login_form = Login(request.POST)
if login_form.is_valid():
login_form.login_user(request) //just call the method created in the form
else:
login_form = Login() //this is for GET REQUEST
return render(request, 'registration/login.html', {'form': login_form}) //you should return instance of the form
这是我的urls.py：
from django.conf.urls import url
from .import views
urlpatterns = [
url(r'^index/', views.index, name='index'),
url(r'^register/', views.register, name='register'),
url(r'^login/', views.login_user, name='login_user'),
url(r'^dashboard/', views.dashboard, name='dashboard'),
url(r'^logout_user/', views.logout_user, name='logout_user'),
url(r'^auth_users/', views.auth_users, name='auth_users'),
# url(r'^authorize_final', views.authorize_final, name='authorize_final'),
url(r'^assigntask', views.assigntask, name='assigntask'),
# url(r'^assign', views.assign, name='assign'),
url(r'^task_list', views.view_task_list, name='view_task_list'),
# url(r'^delete_task', views.delete_task, name='delete_task'),
]
此外，您必须在settings.py中设置登录和注销重定向URL，因为您使用的是默认的login()方法
LOGIN_REDIRECT_URL = '/'
LOGOUT_REDIRECT_URL = '/' //change as you wish