fix: swagger body array type (#4075)

Author: czy88840616

packages/swagger/src/swaggerExplorer.ts

@@ -438,7 +438,7 @@ export class SwaggerExplorer {
           param.metadata.schema['type'] = param.metadata.type;
           delete param.metadata.type;
         }
-        if (param.metadata.isArray !== undefined) {
+        if (param.metadata.isArray) {
           param.metadata.schema['items'] = {
             type: param.metadata.schema['type'],
           };

packages/swagger/test/__snapshots__/parser.test.ts.snap

@@ -165,10 +165,7 @@ exports[`test @ApiBody should test ApiBody 1`] = `
           "content": {
             "application/json": {
               "schema": {
-                "items": {
-                  "$ref": "#/components/schemas/Cat",
-                },
-                "type": "array",
+                "$ref": "#/components/schemas/Cat",
               },
             },
           },
@@ -269,6 +266,74 @@ exports[`test @ApiBody should test ApiBody with array 1`] = `
 }
 `;
 
+exports[`test @ApiBody should test ApiBody with array false 1`] = `
+{
+  "components": {
+    "schemas": {
+      "Cat": {
+        "properties": {
+          "age": {
+            "description": "The age of the Cat",
+            "example": 1,
+            "type": "number",
+          },
+          "name": {
+            "description": "The name of the Cat",
+            "example": "Kitty",
+            "type": "string",
+          },
+        },
+        "type": "object",
+      },
+    },
+  },
+  "info": {
+    "contact": {},
+    "description": "",
+    "title": "",
+    "version": "1.0.0",
+  },
+  "openapi": "3.0.1",
+  "paths": {
+    "/api/update_user": {
+      "post": {
+        "description": undefined,
+        "operationId": "apicontroller_updateuser",
+        "parameters": [],
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/Cat",
+              },
+            },
+          },
+          "description": undefined,
+          "required": true,
+        },
+        "responses": {
+          "200": {
+            "description": "OK",
+          },
+        },
+        "summary": undefined,
+        "tags": [
+          "api",
+        ],
+      },
+    },
+  },
+  "servers": [],
+  "tags": [
+    {
+      "description": "api",
+      "externalDocs": undefined,
+      "name": "api",
+    },
+  ],
+}
+`;
+
 exports[`test @ApiBody should test ApiBody with binary 1`] = `
 {
   "components": {},

packages/swagger/test/parser.test.ts

@@ -416,6 +416,37 @@ describe('test @ApiBody', () => {
     expect(explorer.getData()).toMatchSnapshot();
   });
 
+  it('should test ApiBody with array false', () => {
+    class Cat {
+      /**
+       * The name of the Catcomment
+       * @example Kitty
+       */
+      @ApiProperty({ example: 'Kitty', description: 'The name of the Cat' })
+      name: string;
+
+      @ApiProperty({ example: 1, description: 'The age of the Cat' })
+      age: number;
+    }
+
+    @Controller('/api')
+    @ApiExtraModel(Cat)
+    class APIController {
+      @Post('/update_user')
+      @ApiBody({
+        type: Cat,
+        isArray: false,
+      })
+      async updateUser(@Body() cat: Cat[]) {
+        // ...
+      }
+    }
+
+    const explorer = new CustomSwaggerExplorer();
+    explorer.generatePath(APIController);
+    expect(explorer.getData()).toMatchSnapshot();
+  });
+
   it('should test ApiBody with example', () => {
     class Cat {
       @ApiProperty({ example: 'Kitty', description: 'The name of the Cat' })