Django's authentication form is always not valid -

i trying implement basic login system using django custom user using abstractuser class. here models.py:

from django.db import models django.contrib.auth.models import abstractuser  class stock(models.model):  stock_name = models.charfield(max_length=10) stock_price = models.floatfield() def __str__(self):     return self.stock_name  class customuser(abstractuser):  stocks = models.manytomanyfield(stock) def __str__(self):     return self.username 

my forms.py:

from .models import customuser,stock django.contrib.auth.forms import authenticationform  class loginform(authenticationform):     class meta:         model = customuser         fields = ('username', 'password') 

my views.py:

    def successful_login(request, pk):     user = get_object_or_404(customuser, pk=pk)     return render(request, '../templates/stock_portfolio.html',{'user':user})  def loginview(request):     err=0     if request.method=="post":         form = loginform(request.post)         pdb.set_trace()         if form.is_valid():             username = form.cleaned_data['username']             password = form.cleaned_data['password']             user = authenticate(username=username, password=password)             if user not none:                 pdb.set_trace()                 login(request, user)                 pk = user.id                 pdb.set_trace()                 return redirect('successful_login', pk=pk)         else:             err=1             return render(request,'../templates/login.html',{'response':err,'form':form})     else:         form = loginform()     return render(request, '../templates/login.html',{'form':form}) 

while logging using pdb here getting form.

<loginform bound=false, valid=unknown, fields=(username;password)> 

how proceed now?

wiki