def register(request):
    def errorHandle(error):
        form = RegistrationForm()
        return TemplateResponse(request, 'register.html',
                                 {'form': form,
                                 'error': error},
                                )
    #return TemplateResponse(request, 'register.html',)
    
    if request.method == "POST":
        form = RegistrationForm(request.POST)
        
        if form.is_valid():
            username = form.cleaned_data['username']
            password = form.cleaned_data['password']
            email = form.cleaned_data['email']
            
            
            
            
            try: 
                User.objects.create_user(username, email, password)
                
            except:
                User.objects.exists()
                error = "User already exists"
                return errorHandle(error)
                        
            
        else:
            error = "Proszę prawidłowo wypełnić formularz"
            return errorHandle(error)
    
    return TemplateResponse(request, 'register.html',
                            )

        
        
### Login View
def index(request):
    ### Error Handler
    def errorHandle(error):
        form = LoginForm()
        return TemplateResponse(request, 'login.html',
                                {'form' : form,
                                'error' : error}
                                )
        
    ### If user is logged in - do nothing
    if request.user.is_authenticated():
        username = request.user.username
        return TemplateResponse(request, 'login.html')
    
    else:
        if request.method == "POST":
            form = LoginForm(request.POST)
            if form.is_valid():
                username = request.POST['username']
                password = request.POST['password']
                user = authenticate(username=username, password=password)
                user.save()
                
                if user is not None:
                    if user.is_active:
                        login(request, user)
                        return HttpResponseRedirect('/')
                    else:
                        error = u'Konto nieaktywne'
                        return errorHandle(error)
                                
                else:
                    error = u'Nieprawidłowy login'
                    return errorHandle(error)
                

            else:
                error = u'Proszę wpisać login i hasło.'
                return errorHandle(error)
        else:
            form = LoginForm() 
            return TemplateResponse(request, 'login.html', { 'form' : form })
        
        
    return TemplateResponse(request, 'login.html')