Django admin support for our User model. Adding users still misses some

useful fields for unknown reasons (tixlbase/admin.py:26 does not seem to
do anything, in contrast to documentation).

src/tixlbase/admin.py

@@ -1,3 +1,60 @@
 from django.contrib import admin
+from django.contrib.auth.admin import UserAdmin
+from django.utils.translation import ugettext as _
+from django import forms
 
-# Register your models here.
+from tixlbase.models import User
+
+
+class TixlUserCreationForm(forms.ModelForm):
+
+    """
+    A form that creates a user, with no privileges, from the given username and
+    password.
+    """
+    error_messages = {
+        'password_mismatch': _("The two password fields didn't match."),
+    }
+    password1 = forms.CharField(label=_("Password"),
+                                widget=forms.PasswordInput)
+    password2 = forms.CharField(label=_("Password confirmation"),
+                                widget=forms.PasswordInput,
+                                help_text=_("Enter the same password as above, for verification."))
+
+    class Meta:
+        model = User
+        fields = ("email", "username", "event")
+
+    def clean_password2(self):
+        password1 = self.cleaned_data.get("password1")
+        password2 = self.cleaned_data.get("password2")
+        if password1 and password2 and password1 != password2:
+            raise forms.ValidationError(
+                self.error_messages['password_mismatch'],
+                code='password_mismatch',
+            )
+        return password2
+
+    def save(self, commit=True):
+        user = super(TixlUserCreationForm, self).save(commit=False)
+        user.set_password(self.cleaned_data["password1"])
+        if commit:
+            user.save()
+        return user
+
+
+class TixlUserAdmin(UserAdmin):
+
+    fieldsets = (
+        (None, {'fields': ('identifier', 'event', 'username', 'password')}),
+        (_('Personal info'), {'fields': ('familyname', 'givenname', 'email')}),
+        (_('Permissions'), {'fields': ('is_active', 'is_staff',
+                                       'groups', 'user_permissions')}),
+    )
+    list_display = ('identifier', 'event', 'username', 'email', 'givenname', 'familyname', 'is_staff')
+    search_fields = ('identifier', 'username', 'givenname', 'familyname', 'email')
+    ordering = ('identifier',)
+    list_filter = ('is_staff', 'is_active', 'groups')
+    add_form = TixlUserCreationForm
+
+admin.site.register(User, TixlUserAdmin)