From deecf7b728d5a80a63c7814dd4607d369ebb8667 Mon Sep 17 00:00:00 2001
From: Daniel Harvey <daniel@harves.net>
Date: Sun, 4 Aug 2024 14:47:01 +0800
Subject: [PATCH] fix: Improve array handling not fully functional (misses item
 type) #215

---
 packages/zod-nestjs/src/lib/create-zod-dto.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/packages/zod-nestjs/src/lib/create-zod-dto.ts b/packages/zod-nestjs/src/lib/create-zod-dto.ts
index 3b87630..1f773c0 100644
--- a/packages/zod-nestjs/src/lib/create-zod-dto.ts
+++ b/packages/zod-nestjs/src/lib/create-zod-dto.ts
@@ -61,6 +61,7 @@ export type ZodDtoStatic<T extends CompatibleZodType = CompatibleZodType> = {
 // Used for transforming the SchemaObject in _OPENAPI_METADATA_FACTORY
 type SchemaObjectForMetadataFactory = Omit<SchemaObject30, 'required'> & {
   required: boolean | string[];
+  isArray?: boolean;
 };
 
 export const createZodDto = <T extends OpenApiZodAny>(
@@ -148,6 +149,10 @@ export const createZodDto = <T extends OpenApiZodAny>(
         convertedSchemaObject.type = 'string'; // There ist no explicit null value in OpenAPI 3.0
         convertedSchemaObject.nullable = true;
       }
+      // Array handling (NestJS references 'isArray' boolean)
+      if (convertedSchemaObject.type === 'array') {
+        convertedSchemaObject.isArray = true;
+      }
       // Exclusive minimum and maximum
       const { exclusiveMinimum, exclusiveMaximum } = schemaObject;
       if (exclusiveMinimum !== undefined) {