Basic Django Login Registration Logout System

Published: 25 May 2019
on channel: Jarad Python

5,720

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In this video, I'm trying to walk my future self through how to create a basic Django login, registration and logout system. Every time I get to this step in a Django project, I feel intimidated because I can never remember how I did it the last time.

That's why I'm trying to go through each step in the process here in this video. This is a basic Django login system. In most cases, you'll want a separate Django accounts directory or, even easier, just install Django AllAuth.

Anyways, here's the Django login register logout code:

urls.py
path('login/', login_page, name='login'),
path('register/', register_page, name="register"),
path('logout/', logout_page, name='logout')

forms.py
class LoginForm(forms.Form):
username = forms.CharField(widget=forms.TextInput(attrs={'class': 'form-control'}))
password = forms.CharField(widget=forms.PasswordInput(attrs={'class': 'form-control'}))

class RegisterForm(forms.Form):
username = forms.CharField(widget=forms.TextInput(attrs={'class': 'form-control'}))
email = forms.EmailField(widget=forms.EmailInput(attrs={'class': 'form-control'}))
password_first = forms.CharField(label="Password", widget=forms.PasswordInput(attrs={'class': 'form-control'}))
password_again = forms.CharField(label="Confirm password", widget=forms.PasswordInput(attrs={'class': 'form-control'}))

def clean(self):
cleaned_data = self.cleaned_data
password_one = self.cleaned_data.get('password_first')
password_two = self.cleaned_data.get('password_again')
if password_one != password_two:
raise forms.ValidationError("Passwords don't match")
return cleaned_data

def clean_username(self):
username = self.cleaned_data.get('username')
qs = User.objects.filter(username=username)
if qs.exists():
raise forms.ValidationError("The username you've chosen is unavailable.")
return username

def clean_email(self):
email_address = self.cleaned_data.get('email')
qs = User.objects.filter(email=email_address)
if qs.exists():
raise forms.ValidationError("The email address you've chosen is already registered.")
return email_address

views.py
def login_page(request):
form = LoginForm(request.POST or None)
context = {
'form': form
}
print(request.user.is_authenticated)
if form.is_valid():
print(form.cleaned_data)
username = form.cleaned_data.get('username')
password = form.cleaned_data.get('password')
user = authenticate(request, username=username, password=password)
if user is not None:
login(request, user)
return redirect('/')
else:
print("error.......")

return render(request, "auth/login.html", context=context)

def register_page(request):
form = RegisterForm(request.POST or None)
context = {
'form': form,
}
if form.is_valid():
username = form.cleaned_data.get("username")
email = form.cleaned_data.get("email")
password = form.cleaned_data.get("password_first")
new_user = User.objects.create_user(username, email, password)
return render(request, "auth/register.html", context=context)

def logout_page(request):
logout(request)
return redirect('/')

auth/login.html, auth/register.html (Angle brackets aren't allowed in your description. so replace [ANGLE BRACKET] with an actual angle bracket)
{% extends "base.html" %}

{% block content %}
[ANGLE BRACKET]form method="POST"[ANGLE BRACKET]
{% csrf_token %}
{{ form.as_p }}
[ANGLE BRACKET]button type="submit" class="btn btn-primary"[ANGLE BRACKET]Login[ANGLE BRACKET]/button[ANGLE BRACKET]
[ANGLE BRACKET]/form[ANGLE BRACKET]
{% endblock %}

#Django #Python

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