[1.11.x] Fixed #28202 -- Fixed FieldListFilter.get_queryset() crash on invalid input.

Backport of 4ad2f86284 from master

django/contrib/admin/filters.py

@@ -135,7 +135,9 @@ class FieldListFilter(ListFilter):
     def queryset(self, request, queryset):
         try:
             return queryset.filter(**self.used_parameters)
-        except ValidationError as e:
+        except (ValueError, ValidationError) as e:
+            # Fields may raise a ValueError or ValidationError when converting
+            # the parameters to the correct type.
             raise IncorrectLookupParameters(e)
 
     @classmethod

docs/releases/1.11.3.txt

@@ -18,3 +18,6 @@ Bugfixes
 
 * Fixed an incorrect ``DisallowedModelAdminLookup`` exception when using
   a nested reverse relation in ``list_filter`` (:ticket:`28262`).
+
+* Fixed admin's ``FieldListFilter.get_queryset()`` crash on invalid input
+  (:ticket:`28202`).

tests/admin_filters/tests.py

@@ -8,6 +8,7 @@ from django.contrib.admin import (
     AllValuesFieldListFilter, BooleanFieldListFilter, ModelAdmin,
     RelatedOnlyFieldListFilter, SimpleListFilter, site,
 )
+from django.contrib.admin.options import IncorrectLookupParameters
 from django.contrib.admin.views.main import ChangeList
 from django.contrib.auth.admin import UserAdmin
 from django.contrib.auth.models import User
@@ -766,6 +767,13 @@ class ListFiltersTests(TestCase):
         queryset = changelist.get_queryset(request)
         self.assertEqual(list(queryset), [self.bio_book, self.djangonaut_book])
 
+    def test_fieldlistfilter_invalid_lookup_parameters(self):
+        """Filtering by an invalid value."""
+        modeladmin = BookAdmin(Book, site)
+        request = self.request_factory.get('/', {'author__id__exact': 'StringNotInteger!'})
+        with self.assertRaises(IncorrectLookupParameters):
+            self.get_changelist(request, Book, modeladmin)
+
     def test_simplelistfilter(self):
         modeladmin = DecadeFilterBookAdmin(Book, site)
 

tests/admin_views/admin.py

@@ -176,7 +176,7 @@ class CustomArticleAdmin(admin.ModelAdmin):
 
 
 class ThingAdmin(admin.ModelAdmin):
-    list_filter = ('color__warm', 'color__value', 'pub_date',)
+    list_filter = ('color', 'color__warm', 'color__value', 'pub_date')
 
 
 class InquisitionAdmin(admin.ModelAdmin):