django: form.is_valid always giving error - django

Question

i am working on login page but my form always gives me error, please find my code below, please see view.py it response always go to else statment of "if form.is_valid():" condition. please help
here you can see form.py
from django.contrib.auth.models import User
from django import forms
class LoginForm(forms.ModelForm):
password = forms.CharField(widget=forms.PasswordInput)
class Meta:
model = User
fields = ['username', 'password']
this is my view.py
def login_view(request):
template_name = 'user/login.html'
form_class = LoginForm
if request.method == "POST":
form = form_class(data=request.POST)
if form.is_valid():
username = form.cleaned_data['username']
password = form.cleaned_data['password']
user = authenticate(username=username, password=password)
try:
login(request, user)
return redirect('user:profile')
except:
form = form_class(None)
return render(request, template_name, {'form': form, 'custom_error': 'Error'})
else:
return HttpResponse("<h1>Data is invalid</h1>")
else:
if request.user.is_authenticated():
return redirect('user:profile')
else:
form = form_class(None)
return render(request, template_name, {'form': form,})
user/login.html
{% block body %}
<div class="section">
<div class="container">
<div class="row">
<form class="form-horizontal" role="form" action="" method="post" enctype="multipart/form-data">
{% csrf_token %}
<div class="col-md-5">
<img src="{% static 'user/images/favicon.png' %}" class="img-responsive">
</div>
<div class="col-md-6">
{% include 'user/form-template.html' %}
<div class="col-sm-offset-2 col-sm-10" align="right">
<button type="submit" class="btn btn-default" autofocus>Sign In</button>
</div>
</div>
</form>
</div>
</div>
</div>
{% endblock %}
and finally this is my form-template.html file
{% for field in form %}
<div class="col-md-8">
<div class="col-md-4">
<label>{{ field.label_tag }} </label>
</div>
<div class="col-md-4">
{{ field }}
<div>
<span>{{ field.errors }}</span>
</div>
<div>
<span class="text-danger small">{{ custom_error }}</span>
</div>
</div>
</div>
{% endfor %}

Answer 1

If you are using ModelForm, you are going to operate on django model objects, creating, updating, etc. If you are only trying to login, use Form instead.

Answer 2

Thanks its solved, I just Changed My Form no it looks like this.
class LoginForm(forms.Form):
username = forms.CharField()
password = forms.CharField(widget=forms.PasswordInput)
now i am not using built-in form and i also changed ModelForm to Form.