django UserPassesTestMixin with parameter - django

Question

Here's working version with user_passes_test. But I would like to replace position > 1 with parameter. I found that, it's possible to do with UserPassesTestMixin. But I don't know how. Can anyone help?
models.py
class user_control(models.Model):
user = models.ForeignKey(user, on_delete=CASCADE)
position = models.ForeignKey(position, on_delete=CASCADE)
...
views.py
def position_check(user):
position = 0 if user.is_anonymous else user_control.objects.values(
'position__rank'
).get(
user = user.id
)
return True if position > 1 else False
#user_passes_test(position_check, login_url='loginPage')
def index(request):
pass
#user_passes_test(position_check, login_url='loginPage')
def exportReview(request):
pass
I was try:
class PositionCheckMixin(LoginRequiredMixin, UserPassesTestMixin):
position_value = 2
def test_func(self):
position = 0 if user.is_anonymous else user_control.objects.values(
'position__rank'
).get(
user = self.request.user.id
)
return position > self.position_value
def handle_no_permission(self):
return redirect('loginPage')
class Review(PositionCheckMixin):
position_value = 2
def index(request):

Answer 1

You can make a decorator that takes for example an optional parameter:
def position_check(function=None, position_value=1, redirect_field_name=REDIRECT_FIELD_NAME, login_url=None):
def check(user):
position = 0 if user.is_anonymous else user_control.objects.values(
'position__rank'
).get(
user=user.id
)
return position > position_value
actual_decorator = user_passes_test(
check,
login_url=login_url,
redirect_field_name=redirect_field_name,
)
if function:
return actual_decorator(function)
return actual_decorator
Then you can use the decorator with:
#position_check(position_value=42, login_url='loginPage')
def index(request):
# …
pass
For a class-based view, using the UserPassesTestMixin mixin [Django-doc] is more convenient:
class PositionCheckMixin(UserPassesTestMixin):
position_value = 1
def test_func(self):
position = 0 if self.request.user.is_anonymous else user_control.objects.values(
'position__rank'
).get(
user=self.request.user.id
)
return position > self.position_value
then you can mix this in a class-based view with:
class MyView(PositionCheckMixin, View):
position_value = 42
# …