myauth: show user join data on admin list

project/myauth/admin.py

@@ -28,7 +28,7 @@ class CustomUserAdmin(UserAdmin):
     )
     form = CustomUserChangeForm
     add_form = CustomUserCreationForm
-    list_display = ('username', 'email', 'first_name', 'last_name', 'is_staff')
+    list_display = ('username', 'email', 'first_name', 'last_name', 'is_staff', 'date_joined')
     search_fields = ('username', 'email', 'first_name', 'last_name')
     ordering = ('email',)