How can I learn to make a user login?

[Tom Tanner]

I've read this tutorial on making a simple user registration form. But what about a form for just logging in existing users? I can make a registration form with `views.py` looking like this:

 registration_form.save()
 email= registration_form.cleaned_data.get("email")
 raw_password= registration_form.cleaned_data.get("password1")
 user= authenticate(username=email, password=raw_password)
 login(request, user)
 return redirect(home_slug())

Is there an example of how to make the backend for logging in users?

[Daniel Roseman]

Why do you think you need a "backend"? You've got everything you need here already. 

--

DR.

[Tom Tanner]

I guess what I mean is...

What’s function do I need to use that:
A) logs in the user
B) returns an error if there’s a problem logging in?

[Tom Tanner]

To put it another way: Is there something like `UserCreationForm`, but for logging in users?

[Daniel Roseman]

Did you read the docs, where these are fully documented?

https://docs.djangoproject.com/en/1.11/topics/auth/default/#module-django.contrib.auth.views

--

DR. 

[Tom Tanner]

I see Django has an auth URLfor logging in. How do I construct the login form?

I have a template that will have both login and register forms on it. My view `login_register` looks something like this:

def login_register(request, template="pages/login_register.html"):
 '''
 Display registration and login forms.
 Process user registration.
 Process user login.
 '''
 if request.method=="POST":
  registration_form= UserCreationForm(request.POST)
  if registration_form.is_valid():
   registration_form.save()
   username = registration_form.cleaned_data.get("username")
   raw_password = registration_form.cleaned_data.get("password1")
   user = authenticate(username=username, password=raw_password)
   login(request, user)
   return redirect(home_slug())
  else:
   registration_form = UserCreationForm()
   return render(request, template, {"registration_form": registration_form})

The template for this view:

 <div">
  <h2>Log in</h2>
  <form method="post">
   {% csrf_token %}
   {{ login_form.as_p }}
  </form>
 </div>
 <div>
  <h2>Register</h2>
  <form method="post">
   {% csrf_token %}
   {{ registration_form.as_p }}
   <button type="submit">Register</button>
  </form>
 </div>

It seems like `UserCreationForm` makes the register form. So how do I make the login form?

[Daniel Roseman]

I literally just pointed you to the page in the docs that lists the login form and view.
--
DR.