Django form validation with Bootstrap 5 - django

Question

I want to create django login form with bootstrap 5. How can i ensure that the form is valid? Can i styling raise validationError with bootstrap in template?
Here is my code:
forms.py
class LoginForm(forms.Form):
username = forms.CharField()
password = forms.CharField()
def clean(self):
username = self.cleaned_data.get("username")
password = self.cleaned_data.get("password")
# Check if user and password is matching and exists
user = authenticate(username=username, password=password)
if not user:
raise forms.ValidationError("This is an invalid user.")
login_page.html
<form method="POST" class="row g-3 needs-validation" novalidate>
{% csrf_token %}
<input type="text" name="username" class="form-control" placeholder="Username" required>
<div class="invalid-feedback">{{ #raise ValidationError here }}</div>
<input type="password" name="password" class="form-control" placeholder="Password" required>
<div class="invalid-feedback">{{ #raise ValidationError here }}</div>
<input class="btn btn-primary" type="submit" value="Login">
Can i do that? Or is there a better solution to create login form validation?
Thankyou.

Answer 1

you can pass validation here like this in your forms.py
forms.py
class LoginForm(forms.Form):
username = forms.CharField()
password = forms.CharField(widget=forms.PasswordInput)
def clean(self, *args, **kwargs):
username = self.cleaned_data.get("username")
password = self.cleaned_data.get("password")
if username and password:
user = authenticate(username=username, password=password)
if not user:
raise forms.ValidationError("This user doesn't exist")
if not user.check_password(password):
raise forms.ValidationError("Incorrect Password")
if not user.is_active:
raise forms.ValidationError("User no longer Active")
return super(LoginForm,self).clean(*args,**kwargs)