From 51faf4bd172cd4cb219a9793facbfa00246c9f3c Mon Sep 17 00:00:00 2001
From: Francesco Panico <panico.francesco@gmail.com>
Date: Thu, 17 Nov 2022 22:45:06 +0100
Subject: Fixed #34148 -- Reverted "Fixed #32901 -- Optimized
 BaseForm.__getitem__()."

This reverts commit edde2a069929c93e37835dc3f7c9a229040058e2.

Thanks Jan Pieter Waagmeester for the report.
---
 tests/forms_tests/tests/test_forms.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'tests/forms_tests')

diff --git a/tests/forms_tests/tests/test_forms.py b/tests/forms_tests/tests/test_forms.py
index 6005472194..930a200b14 100644
--- a/tests/forms_tests/tests/test_forms.py
+++ b/tests/forms_tests/tests/test_forms.py
@@ -4579,6 +4579,22 @@ Options: <select multiple name="options" required>
             '<legend number="9999" for="id_first_name">First name:</legend>',
         )
 
+    def test_remove_cached_field(self):
+        class TestForm(Form):
+            name = CharField(max_length=10)
+
+            def __init__(self, *args, **kwargs):
+                super().__init__(*args, **kwargs)
+                # Populate fields cache.
+                [field for field in self]
+                # Removed cached field.
+                del self.fields["name"]
+
+        f = TestForm({"name": "abcde"})
+
+        with self.assertRaises(KeyError):
+            f["name"]
+
 
 @jinja2_tests
 class Jinja2FormsTestCase(FormsTestCase):
-- 
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