Merge pull request #324 from ryu818/fix/issue323/nested_error_mes

fix: Error Messages Not Displayed for Nested Array Fields in Form Inputs

Author: markstory

src/View/Form/DocumentContext.php

@@ -417,11 +417,20 @@ public function error(string $field): array
             $entityErrors = $this->_context['entity']->getErrors();
         }
 
+        $tailField = array_pop($parts);
         if ($entity instanceof Document) {
-            $errors = $entity->getError(array_pop($parts));
+            $errors = $entity->getError($tailField);
         }
 
-        if (!$errors && $entityErrors && !is_array($entity)) {
+        // If errors couldn't be read from $entity and $entity
+        // is either not an array, or the tail field is not Document
+        // we want to extract errors from the root entity as we could
+        // have nested validators, or structured fields.
+        if (
+            !$errors &&
+            $entityErrors &&
+            (!is_array($entity) || !($entity[$tailField] instanceof Document))
+        ) {
             $errors = Hash::extract($entityErrors, $field) ?: [];
         }
 

tests/TestCase/View/Form/DocumentContextTest.php

@@ -473,10 +473,10 @@ public function testNestedValidatorErrors()
         $expected = [ 'username' => [ 'Required' ] ];
         $this->assertEquals($expected, $context->error('user'));
 
-        $expected = [ 'Required' ];
+        $expected = ['Required'];
         $this->assertEquals($expected, $context->error('user.username'));
 
-        $expected = [ 'Required' ];
+        $expected = ['Required'];
         $this->assertEquals([], $context->error('comments.0'));
         $this->assertEquals($expected, $context->error('comments.0.comment'));
         $this->assertEquals($expected, $context->error('comments.2.comment'));
@@ -523,6 +523,43 @@ public function testErrorAssociatedHasMany()
         $this->assertEquals([], $context->error('comments.1.article_id'));
     }
 
+    /**
+     * Test errors for structured fields.
+     *
+     * @return void
+     */
+    public function testErrorNestedFields()
+    {
+        $row = new Article([
+            'name' => [
+                'ja' => [
+                    ['family_name' => 'XX', 'given_name' => 'YY'],
+                ],
+                'en' => [
+                    ['family_name' => 'ZZ', 'given_name' => 'AA'],
+                ]
+            ]
+        ]);
+        $row->setError('name', [
+            'ja' => [
+                ['family_name' => ['_empty' => 'Invalid value']]
+            ]
+        ]);
+
+        $articles = $this->setupIndex();
+        $context = new DocumentContext(
+            $this->request,
+            [
+                'entity' => $row,
+                'table' => $articles,
+                'validator' => 'default',
+            ]
+        );
+        $this->assertEquals(['_empty' => 'Invalid value'], $context->error('name.ja.0.family_name'));
+        $this->assertEquals([], $context->error('name.derp.0.family_name'));
+        $this->assertEquals([], $context->error('name.derp.0.undefined'));
+    }
+
     /**
      * Test getting fieldnames.
      *

tests/bootstrap.php

@@ -51,8 +51,8 @@
     putenv('DB_URL=Cake\ElasticSearch\Datasource\Connection://127.0.0.1:9200?driver=Cake\ElasticSearch\Datasource\Connection');
 }
 
-ConnectionManager::setConfig('elastic', ['url' => getenv('DB_URL')]);
 ConnectionManager::setConfig('test', ['url' => getenv('DB_URL')]);
+ConnectionManager::setConfig('test_elastic', ['url' => getenv('DB_URL')]);
 
 $schema = new MappingGenerator('./tests/mappings.php', 'test');
 $schema->reload();