Merge branch 'fix-for-issue-12075' of github.com:Alexander-Khohklov/magento2 into 2.4-develop-prs

Author: ishakhsuvarov

app/code/Magento/Eav/Model/Attribute/Data/Text.php

@@ -79,6 +79,9 @@ public function validateValue($value)
             return $errors;
         }
 
+        // if string with diacritics encode it.
+        $value = $this->encodeDiacritics($value);
+
         $validateLengthResult = $this->validateLength($attribute, $value);
         $errors = array_merge($errors, $validateLengthResult);
 
@@ -173,4 +176,19 @@ private function validateInputRule(string $value): array
         $result = $this->_validateInputRule($value);
         return \is_array($result) ? $result : [];
     }
+
+    /**
+     * Encode strings with diacritics for validate.
+     *
+     * @param array|string $value
+     * @return array|string
+     */
+    private function encodeDiacritics($value): array|string
+    {
+        $encoded = $value;
+        if (is_string($value)) {
+            $encoded = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $value);
+        }
+        return $encoded;
+    }
 }

app/code/Magento/Eav/Test/Unit/Model/Attribute/Data/TextTest.php

@@ -199,6 +199,16 @@ public function alphanumWithSpacesDataProvider(): array
         ];
     }
 
+    /**
+     * Test for string with diacritics validation
+     */
+    public function testValidateValueStringWithDiacritics(): void
+    {
+        $inputValue = "á â à å ä ð é ê è ë í î ì ï ó ô ò ø õ ö ú û ù ü æ œ ç ß a ĝ ń ŕ ý ð ñ";
+        $expectedResult = true;
+        self::assertEquals($expectedResult, $this->model->validateValue($inputValue));
+    }
+
     /**
      * @param array $attributeData
      * @return Attribute