request the username in login instead of the email

dal/forms.py

@@ -4,18 +4,18 @@ from django.utils.translation import ugettext_lazy as _
 
 
 class LoginForm(forms.Form):
-    email = forms.CharField(widget=forms.TextInput())
+    username = forms.CharField(widget=forms.TextInput())
     password = forms.CharField(widget=forms.PasswordInput())
 
     class Meta:
-        fields = ['email', 'password']
+        fields = ['username', 'password']
 
     def clean(self):
-        email = self.cleaned_data.get('email')
+        username = self.cleaned_data.get('username')
         password = self.cleaned_data.get('password')
         if self.errors:
             return self.cleaned_data
-        is_auth = authenticate(username=email, password=password)
+        is_auth = authenticate(username=username, password=password)
         if not is_auth:
             raise forms.ValidationError(
                 _("Your username and/or password were incorrect.")
@@ -26,6 +26,6 @@ class LoginForm(forms.Form):
         #     )
         return self.cleaned_data
 
-    def clean_email(self):
-        email = self.cleaned_data.get('email')
-        return email
+    def clean_username(self):
+        username = self.cleaned_data.get('username')
+        return username

dal/views.py

@@ -37,9 +37,9 @@ class Index(FormView):
     success_url = 'useroptions.html'
 
     def form_valid(self, form):
-        email = form.cleaned_data.get('email')
+        username = form.cleaned_data.get('username')
         password = form.cleaned_data.get('password')
-        user = authenticate(username=email, password=password)
+        user = authenticate(username=username, password=password)
         if user is not None:
             login(self.request, user)
             return render(self.request, 'useroptions.html', { 'user': user } )