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-rw-r--r--docs/ref/contrib/admin/index.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/ref/contrib/admin/index.txt b/docs/ref/contrib/admin/index.txt
index f01a845493..b2b62b6977 100644
--- a/docs/ref/contrib/admin/index.txt
+++ b/docs/ref/contrib/admin/index.txt
@@ -969,6 +969,9 @@ subclass::
The ``FieldListFilter`` API is considered internal and might be
changed.
+ List filter's typically appear only if the filter has more than one choice.
+ A filter's ``has_output()`` method controls whether or not it appears.
+
It is possible to specify a custom template for rendering a list filter::
class FilterWithCustomTemplate(admin.SimpleListFilter):