def get(self,request):
    form = LoginForm()
    posts=users_data.objects.all()
    args = {'form': form, 'posts': posts}
    return render(request, self.template_name, args)

    return render(request,self.template_name, {'form':form})

#template_name2 = 'Welcome.html'
def post(self,request):
    form = LoginForm(request.POST)
    if form.is_valid():
        #text=form.cleaned_data['post']
        username = forms.cleaned_data.get("Username")
        password = forms.cleaned_data.get("Password")

        user = authenticate(username=username, password=password)

        if not user:
            raise forms.ValidationError("This user does not exist")
            return render(request, self.template_name1)
        else:
            form.save()
            return render(request, self.template_name2)
    else:
        return render(request, self.template_name1)

class Meta:
    model=users_data
    fields=('Name','Email','Username','Password')

class Meta:
    model=users_data
    fields=('Username','Password')


def clean(self):
    username = self.cleaned_data.get("Username")
    password = self.cleaned_data.get("Password")
    user=authenticate(username=username,password=password)
    if not user:
        raise forms.ValidationError("This user does not exist")