Fix #4124

Author: soyuka

src/OpenApi/Factory/OpenApiFactory.php

@@ -419,7 +419,7 @@ private function getFiltersParameters(ResourceMetadata $resourceMetadata, string
                     $schema,
                     'array' === $schema['type'] && \in_array($data['type'],
                     [Type::BUILTIN_TYPE_ARRAY, Type::BUILTIN_TYPE_OBJECT], true) ? 'deepObject' : 'form',
-                    'array' === $schema['type'],
+                    $data['openapi']['explode'] ?? ('array' === $schema['type']),
                     $data['openapi']['allowReserved'] ?? false,
                     $data['openapi']['example'] ?? null,
                     isset($data['openapi']['examples']

src/OpenApi/Model/Encoding.php

@@ -52,11 +52,21 @@ public function canExplode(): bool
         return $this->explode;
     }
 
+    public function getExplode(): bool
+    {
+        return $this->explode;
+    }
+
     public function canAllowReserved(): bool
     {
         return $this->allowReserved;
     }
 
+    public function getAllowReserved(): bool
+    {
+        return $this->allowReserved;
+    }
+
     public function withContentType(string $contentType): self
     {
         $clone = clone $this;

src/OpenApi/Model/Parameter.php

@@ -83,7 +83,7 @@ public function getDeprecated(): bool
         return $this->deprecated;
     }
 
-    public function canAllowEmptyValue(): bool
+    public function getAllowEmptyValue(): bool
     {
         return $this->allowEmptyValue;
     }
@@ -103,11 +103,21 @@ public function canExplode(): bool
         return $this->explode;
     }
 
+    public function getExplode(): bool
+    {
+        return $this->explode;
+    }
+
     public function canAllowReserved(): bool
     {
         return $this->allowReserved;
     }
 
+    public function getAllowReserved(): bool
+    {
+        return $this->allowReserved;
+    }
+
     public function getExample()
     {
         return $this->example;

tests/OpenApi/Factory/OpenApiFactoryTest.php

@@ -158,7 +158,7 @@ public function testInvoke(): void
                 'type' => 'string',
                 'required' => true,
                 'strategy' => 'exact',
-                'openapi' => ['example' => 'bar', 'deprecated' => true, 'allowEmptyValue' => true, 'allowReserved' => true],
+                'openapi' => ['example' => 'bar', 'deprecated' => true, 'allowEmptyValue' => true, 'allowReserved' => true, 'explode' => true],
             ]]),
             'f2' => new DummyFilter(['ha' => [
                 'property' => 'foo',
@@ -517,7 +517,7 @@ public function testInvoke(): void
                 ]),
                 new Model\Parameter('name', 'query', '', true, true, true, [
                     'type' => 'string',
-                ], 'form', false, true, 'bar'),
+                ], 'form', true, true, 'bar'),
                 new Model\Parameter('ha', 'query', '', false, false, true, [
                     'type' => 'integer',
                 ]),