BACKENDS.PY
class EmpBackend(ModelBackend):
Emp = get_user_model()
supports_object_permissions = True
supports_anonymous_user = False
supports_inactive_user = False
def authenticate(self, request, email=None, password=None, **kwargs):
if email is None or password is None:
return
try:
username = kwargs.get('Emp.USERNAME_FIELD')
user = Emp.objects.get(email=username)
if user.check_password(password) and self.user_can_authenticate(user):
return user
except Emp.DoesNotExist:
return None
return None
def user_can_authenticate(self, user):
is_active = getattr(user, 'is_active', None)
return is_active or is_active is None
def get_user(self, user_id):
try:
return Emp.objects.get(pk=user_id)
except Emp.DoesNotExist:
return None
def has_perm(self, perm, obj=None):
return True
def has_module_perms(self, app_label):
return True
On Monday, July 5, 2021 at 12:09:17 PM UTC-5 David Crandell wrote:
> This is the message I get when I try to login "Please enter a correct
> email and password. Note that both fields may be case-sensitive."
>
> I've changed my code a little in an effort to try to remedy my situation.
>
> I'm really stuck on this. From what I can tell, it's passing the values to
> the authenticate() method in my EmpBackend but it keeps saying password is
> not valid. How do I pass the correct password value? Am I overlooking
> something?
>
> SETTINGS.PY
>
> # Login model override
> AUTH_USER_MODEL = 'employees.Emp'
> LOGIN_URL = 'employees:login'
> LOGIN_REDIRECT_URL = 'employees:emp-home'
> AUTHENTICATION_BACKENDS = [
> 'django.contrib.auth.backends.ModelBackend',
> 'employees.backends.EmpBackend',
> ]
>
> FORMS.PY
>
> class LoginForm(AuthenticationForm):
> def __init__(self, *args, **kwargs):
> super(LoginForm, self).__init__(*args, **kwargs)
>
> username = forms.EmailField(widget=forms.TextInput(
> attrs={
> 'class': 'form-control',
> 'placeholder': '',
> 'id': 'username',
> }
> ))
> password = forms.CharField(widget=forms.PasswordInput(
> attrs={
> 'class': 'form-control',
> 'placeholder': '',
> 'id': 'password',
> }
> ))
>
> template_name = 'employees/login.html'
>
> VIEWS.PY
>
> class MyLogin(LoginView):
> template_name = 'employees/login.html'
> form_class = LoginForm
> success_url = 'employees:emp-home'
>
> def get_success_url(self):
>
> return super(MyLogin, self).get_success_url()
>
> def form_valid(self, form):
> user = self.request.POST.get('username')
> password = self.request.POST.get('password')
> EmpBackend.authenticate(Emp, self.request, user, password)
>
> return HttpResponseRedirect(self.get_success_url())
>
> MODELS.PY
>
> class Emp(AbstractBaseUser):
> first_name = models.CharField(max_length=100, default=None)
> last_name = models.CharField(max_length=100, default=None)
> email = models.EmailField(max_length=255, default=None, unique=True)
> username = models.CharField(max_length=100, default=None, null=True)
> phone = models.CharField(max_length=20, default=None, null=True,
> blank=True)
> password = models.CharField(max_length=100)
> address1 = models.CharField(max_length=100, default=None, null=True,
> blank=True)
> address2 = models.CharField(max_length=100, default=None, null=True,
> blank=True)
> city = models.CharField(max_length=100, default=None, null=True,
> blank=True)
> state = models.CharField(max_length=100, default=None, null=True,
> blank=True)
> zip = models.CharField(max_length=10, default=None, null=True, blank=True)
> position = models.CharField(max_length=50, default=None)
> date_hired = models.DateTimeField(auto_now_add=True)
> date_updated = models.DateTimeField(auto_now_add=True)
> date_terminated = models.DateTimeField(default=None, null=True, blank=True)
> is_active = models.BooleanField(default=True)
> status = models.SmallIntegerField(default=0)
> emp_is_salary = models.BooleanField(default=False)
> emp_pto_rate = models.DecimalField(max_digits=8, decimal_places=4,
> default=0.0)
> emp_user_level = models.SmallIntegerField(default=1)
> emerg_contact1 = models.CharField(max_length=100, default=None, null=True,
> blank=True)
> emerg_contact1_phone = models.CharField(max_length=20, default=None,
> null=True, blank=True)
> emerg_contact1_address = models.CharField(max_length=200, default=None,
> null=True, blank=True)
> emerg_contact1_city_st = models.CharField(max_length=200, default=None,
> null=True, blank=True)
> emerg_contact2 = models.CharField(max_length=100, default=None, null=True,
> blank=True)
> emerg_contact2_phone = models.CharField(max_length=20, default=None,
> null=True, blank=True)
> emerg_contact2_address = models.CharField(max_length=200, default=None,
> null=True, blank=True)
> emerg_contact2_city_st = models.CharField(max_length=200, default=None,
> null=True, blank=True)
> emp_note = models.TextField(default=None, null=True, blank=True)
> emp_hourly_rate = models.DecimalField(max_digits=8, decimal_places=4,
> default=0.0)
> emp_net_pto = models.DecimalField(max_digits=8, decimal_places=4,
> default=0.0)
> emp_pto_prev = models.DecimalField(max_digits=8, decimal_places=4,
> default=0.0)
> emp_image = models.ImageField(upload_to='profile-pics/',
> default='profile-pics/default.png', null=True, blank=True)
> last_login = models.DateTimeField(default=None, null=True)
> is_staff = models.BooleanField(default=True, blank=True)
> date_joined = models.DateTimeField(auto_now_add=True, blank=True)
> is_superuser = models.BooleanField(default=False, blank=True)
>
> USERNAME_FIELD = 'email'
> REQUIRED_FIELDS = []
>
> def get_full_name(self):
> return f'{self.first_name} {self.last_name}'
>
> def get_email(self):
> return self.email
>
> def __str__(self):
> return self.email
>
> @property
> def is_staff(self):
> return self.staff
>
> @property
> def is_admin(self):
> return self.admin
>
> def save(self, *args, **kwargs):
> super(Emp, self).save(*args, **kwargs)
>
> img = Image.open(self.emp_image.path)
>
> if img.height > 300 or img.width > 300:
> output_size = (300, 300)
> img.thumbnail(output_size)
> img.save(self.emp_image.image)
>
> self.last_login = timezone.utc
>
> def get_absolute_url(self):
> return reverse('employees:emp-detail', args=[self.id])
>
> objects = UserManager()
> On Sunday, July 4, 2021 at 9:14:21 PM UTC-5 ANi wrote:
>
>> What does the error message say?
>> guitard...@gmail.com 在 2021年7月4日 星期日下午1:48:58 [UTC+8] 的信中寫道：
>>
>>> Hello, I am using a custom auth backend and everything displays
>>> properly, except I cannot login with the credentials in my model. I have
>>> spent 5 hours on this and cannot figure it out. Please help.
>>>
>>> views.py
>>>
>>> class MyLogin(LoginView):
>>> template_name = 'employees/login.html'
>>> form_class = LoginForm
>>>
>>>
>>> def form_valid(self, form):
>>> user = form.get_user()
>>> employee = Emp.objects.get(email=user)
>>> if employee.is_active:
>>> EmpBackend.authenticate(self.request, username=user,
>>> password=form.password)
>>>
>>> return HttpResponseRedirect(self.get_success_url())
>>>
>>> backends.py
>>>
>>> from django.contrib.auth.backends import ModelBackend
>>> from .models import Emp
>>>
>>>
>>> class EmpBackend(ModelBackend):
>>> def authenticate(self, request, username=None, password=None, **kwargs):
>>> try:
>>> user = Emp.objects.get(email=username)
>>> if user.check_password(password):
>>> return user
>>> except Emp.DoesNotExist:
>>> return None
>>>
>>> return None
>>>
>>> def get_user(self, user_id):
>>> try:
>>> return Emp.objects.get(pk=user_id)
>>> except Emp.DoesNotExist:
>>> return None
>>>
>>> models.py
>>>
>>> class Emp(AbstractBaseUser):
>>> first_name = models.CharField(max_length=100, default=None)
>>> last_name = models.CharField(max_length=100, default=None)
>>> email = models.EmailField(max_length=255, default=None, unique=True)
>>> username = models.CharField(max_length=100, default=None, null=True)
>>> phone = models.CharField(max_length=20, default=None, null=True,
>>> blank=True)
>>> password = models.CharField(max_length=100)
>>> address1 = models.CharField(max_length=100, default=None, null=True,
>>> blank=True)
>>> address2 = models.CharField(max_length=100, default=None, null=True,
>>> blank=True)
>>> city = models.CharField(max_length=100, default=None, null=True,
>>> blank=True)
>>> state = models.CharField(max_length=100, default=None, null=True,
>>> blank=True)
>>> zip = models.CharField(max_length=10, default=None, null=True,
>>> blank=True)
>>> position = models.CharField(max_length=50, default=None)
>>> date_hired = models.DateTimeField(auto_now_add=True)
>>> date_updated = models.DateTimeField(auto_now_add=True)
>>> date_terminated = models.DateTimeField(default=None, null=True,
>>> blank=True)
>>> is_active = models.BooleanField(default=True)
>>> status = models.SmallIntegerField(default=0)
>>> emp_is_salary = models.BooleanField(default=False)
>>> emp_pto_rate = models.DecimalField(max_digits=8, decimal_places=4,
>>> default=0.0)
>>> emp_user_level = models.SmallIntegerField(default=1)
>>> emerg_contact1 = models.CharField(max_length=100, default=None,
>>> null=True, blank=True)
>>> emerg_contact1_phone = models.CharField(max_length=20, default=None,
>>> null=True, blank=True)
>>> emerg_contact1_address = models.CharField(max_length=200, default=None,
>>> null=True, blank=True)
>>> emerg_contact1_city_st = models.CharField(max_length=200, default=None,
>>> null=True, blank=True)
>>> emerg_contact2 = models.CharField(max_length=100, default=None,
>>> null=True, blank=True)
>>> emerg_contact2_phone = models.CharField(max_length=20, default=None,
>>> null=True, blank=True)
>>> emerg_contact2_address = models.CharField(max_length=200, default=None,
>>> null=True, blank=True)
>>> emerg_contact2_city_st = models.CharField(max_length=200, default=None,
>>> null=True, blank=True)
>>> emp_note = models.TextField(default=None, null=True, blank=True)
>>> emp_hourly_rate = models.DecimalField(max_digits=8, decimal_places=4,
>>> default=0.0)
>>> emp_net_pto = models.DecimalField(max_digits=8, decimal_places=4,
>>> default=0.0)
>>> emp_pto_prev = models.DecimalField(max_digits=8, decimal_places=4,
>>> default=0.0)
>>> emp_image = models.ImageField(upload_to='profile-pics/',
>>> default='profile-pics/default.png', null=True, blank=True)
>>> last_login = models.DateTimeField(default=None, null=True)
>>> is_staff = models.BooleanField(default=True, blank=True)
>>> date_joined = models.DateTimeField(auto_now_add=True, blank=True)
>>> is_superuser = models.BooleanField(default=False, blank=True)
>>>
>>> USERNAME_FIELD = 'email'
>>> REQUIRED_FIELDS = []
>>>
>>> def get_full_name(self):
>>> return f'{self.first_name} {self.last_name}'
>>>
>>> def get_email(self):
>>> return self.email
>>>
>>> def __str__(self):
>>> return self.email
>>>
>>> def has_perm(self, perm, obj=None):
>>> return True
>>>
>>> def has_module_perms(self, app_label):
>>> return True
>>>
>>> @property
>>> def is_staff(self):
>>> return self.staff
>>>
>>> @property
>>> def is_admin(self):
>>> return self.admin
>>>
>>> def save(self, *args, **kwargs):
>>> super(Emp, self).save(*args, **kwargs)
>>>
>>> img = Image.open(self.emp_image.path)
>>>
>>> if img.height > 300 or img.width > 300:
>>> output_size = (300, 300)
>>> img.thumbnail(output_size)
>>> img.save(self.emp_image.image)
>>>
>>> self.last_login = timezone.utc
>>>
>>> def get_absolute_url(self):
>>> return reverse('employees:emp-detail', args=[self.id])
>>>
>>> objects = UserManager()
>>>
>>
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