[11.x] Fix nested rules custom attribute names

src/Illuminate/Validation/Concerns/FormatsMessages.php

@@ -273,15 +273,15 @@ public function getDisplayableAttribute($attribute)
             // The developer may dynamically specify the array of custom attributes on this
             // validator instance. If the attribute exists in this array it is used over
             // the other ways of pulling the attribute name for this given attributes.
-            if (isset($this->customAttributes[$name])) {
-                return $this->customAttributes[$name];
+            if ($inlineAttribute = $this->getAttributeFromLocalArray($name)) {
+                return $inlineAttribute;
             }
 
             // We allow for a developer to specify language lines for any attribute in this
             // application, which allows flexibility for displaying a unique displayable
             // version of the attribute name instead of the name used in an HTTP POST.
-            if ($line = $this->getAttributeFromTranslations($name)) {
-                return $line;
+            if ($translatedAttribute = $this->getAttributeFromTranslations($name)) {
+                return $translatedAttribute;
             }
         }
 
@@ -301,11 +301,39 @@ public function getDisplayableAttribute($attribute)
      * Get the given attribute from the attribute translations.
      *
      * @param  string  $name
-     * @return string
+     * @return string|null
      */
     protected function getAttributeFromTranslations($name)
     {
-        return Arr::get($this->translator->get('validation.attributes'), $name);
+        return $this->getAttributeFromLocalArray(
+            $name, Arr::dot((array) $this->translator->get('validation.attributes'))
+        );
+    }
+
+    /**
+     * Get the custom name for an attribute if it exists in the given array.
+     *
+     * @param  string  $attribute
+     * @param  array|null  $source
+     * @return string|null
+     */
+    protected function getAttributeFromLocalArray($attribute, $source = null)
+    {
+        $source = $source ?: $this->customAttributes;
+
+        if (isset($source[$attribute])) {
+            return $source[$attribute];
+        }
+
+        foreach (array_keys($source) as $sourceKey) {
+            if (str_contains($sourceKey, '*')) {
+                $pattern = str_replace('\*', '([^.]*)', preg_quote($sourceKey, '#'));
+
+                if (preg_match('#^'.$pattern.'\z#u', $attribute) === 1) {
+                    return $source[$sourceKey];
+                }
+            }
+        }
     }
 
     /**

tests/Validation/ValidationValidatorTest.php

@@ -23,6 +23,7 @@
 use Illuminate\Translation\ArrayLoader;
 use Illuminate\Translation\Translator;
 use Illuminate\Validation\DatabasePresenceVerifierInterface;
+use Illuminate\Validation\Rule as ValidationRule;
 use Illuminate\Validation\Rules\Exists;
 use Illuminate\Validation\Rules\ProhibitedIf;
 use Illuminate\Validation\Rules\Unique;
@@ -558,6 +559,39 @@ public function testAttributeNamesAreReplacedInArrays()
         $this->assertSame('First name is required!', $v->messages()->first('names.0'));
     }
 
+    public function testInlineAttributeNamesAreReplacedInArraysFromNestedRules()
+    {
+        $trans = $this->getIlluminateArrayTranslator();
+        $trans->addLines(['validation.required' => ':attribute is required!'], 'en');
+        $v = new Validator($trans, [
+            'users' => [['name' => 'Taylor']],
+        ], [
+            'users.*' => ValidationRule::forEach(fn () => ['id' => 'required']),
+        ], [], [
+            'users.*.id' => 'User ID',
+        ]);
+        $this->assertFalse($v->passes());
+        $v->messages()->setFormat(':message');
+        $this->assertSame('User ID is required!', $v->messages()->first('users.0.id'));
+    }
+
+    public function testTranslatedAttributeNamesAreReplacedInArraysFromNestedRules()
+    {
+        $trans = $this->getIlluminateArrayTranslator();
+        $trans->addLines([
+            'validation.required' => ':attribute is required!',
+            'validation.attributes' => ['users.*.id' => 'User ID'],
+        ], 'en');
+        $v = new Validator($trans, [
+            'users' => [['name' => 'Taylor']],
+        ], [
+            'users.*' => ValidationRule::forEach(fn () => ['id' => 'required']),
+        ]);
+        $this->assertFalse($v->passes());
+        $v->messages()->setFormat(':message');
+        $this->assertSame('User ID is required!', $v->messages()->first('users.0.id'));
+    }
+
     public function testInputIsReplaced()
     {
         $trans = $this->getIlluminateArrayTranslator();