Fixed #35330 -- Fixed the update of related widgets when the referenced model is camel case named.

Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>

3 files changed, 62 insertions, 0 deletions

diff --git a/tests/admin_views/admin.py b/tests/admin_views/admin.py
index c157e70505..0ea64d594a 100644
--- a/tests/admin_views/admin.py
+++ b/tests/admin_views/admin.py
@@ -33,6 +33,8 @@ from .models import (
     Book,
     Bookmark,
     Box,
+    CamelCaseModel,
+    CamelCaseRelatedModel,
     Category,
     Chapter,
     ChapterXtra1,
@@ -1181,6 +1183,10 @@ class SquareAdmin(admin.ModelAdmin):
     readonly_fields = ("area",)
 
 
+class CamelCaseAdmin(admin.ModelAdmin):
+    filter_horizontal = ["m2m"]
+
+
 site = admin.AdminSite(name="admin")
 site.site_url = "/my-site-url/"
 site.register(Article, ArticleAdmin)
@@ -1305,6 +1311,8 @@ site.register(Box)
 site.register(Country, CountryAdmin)
 site.register(Traveler, TravelerAdmin)
 site.register(Square, SquareAdmin)
+site.register(CamelCaseModel)
+site.register(CamelCaseRelatedModel, CamelCaseAdmin)
 
 # Register core models we need in our tests
 site.register(User, UserAdmin)
diff --git a/tests/admin_views/models.py b/tests/admin_views/models.py
index 341e5aaed0..812505de82 100644
--- a/tests/admin_views/models.py
+++ b/tests/admin_views/models.py
@@ -1155,3 +1155,15 @@ class Square(models.Model):
 
     class Meta:
         required_db_features = {"supports_stored_generated_columns"}
+
+
+class CamelCaseModel(models.Model):
+    interesting_name = models.CharField(max_length=100)
+
+    def __str__(self):
+        return self.interesting_name
+
+
+class CamelCaseRelatedModel(models.Model):
+    m2m = models.ManyToManyField(CamelCaseModel, related_name="m2m")
+    fk = models.ForeignKey(CamelCaseModel, on_delete=models.CASCADE, related_name="fk")
diff --git a/tests/admin_views/test_related_object_lookups.py b/tests/admin_views/test_related_object_lookups.py
index 145bf0d6de..955bebea9e 100644
--- a/tests/admin_views/test_related_object_lookups.py
+++ b/tests/admin_views/test_related_object_lookups.py
@@ -76,3 +76,45 @@ class SeleniumTests(AdminSeleniumTestCase):
             with self.subTest(link_id):
                 link = self.selenium.find_element(By.XPATH, f'//*[@id="{link_id}"]')
                 self.assertIsNone(link.get_attribute("aria-disabled"))
+
+    def test_related_object_update_with_camel_casing(self):
+        from selenium.webdriver.common.by import By
+
+        def _get_HTML_inside_element_by_id(id_):
+            return self.selenium.find_element(By.ID, id_).get_attribute("innerHTML")
+
+        add_url = reverse("admin:admin_views_camelcaserelatedmodel_add")
+        self.selenium.get(self.live_server_url + add_url)
+        interesting_name = "A test name"
+
+        # Add a new CamelCaseModel using the "+" icon next to the "fk" field.
+        self.selenium.find_element(By.ID, "add_id_fk").click()
+
+        # Switch to the add popup window.
+        self.wait_for_and_switch_to_popup()
+
+        # Find the "interesting_name" field and enter a value, then save it.
+        self.selenium.find_element(By.ID, "id_interesting_name").send_keys(
+            interesting_name
+        )
+        self.selenium.find_element(By.NAME, "_save").click()
+
+        # Return to the main window.
+        self.wait_until(lambda d: len(d.window_handles) == 1, 1)
+        self.selenium.switch_to.window(self.selenium.window_handles[0])
+
+        # Check that both the "Available" m2m box and the "Fk" dropdown now
+        # include the newly added CamelCaseModel instance.
+        self.assertHTMLEqual(
+            self.selenium.find_element(By.ID, "id_fk"),
+            f"""
+            <option value="" selected="">---------</option>
+            <option value="1" selected>{interesting_name}</option>
+            """,
+        )
+        self.assertHTMLEqual(
+            self.selenium.find_element(By.ID, "id_m2m_from"),
+            f"""
+            <option value="1">{interesting_name}</option>
+            """,
+        )