Multiple file upload - Got 400

Hello,

In Open API V3 specs, it is possible to specify how multiple file upload is handled ( https://swagger.io/docs/specification/describing-request-body/file-upload/ ).

      requestBody:
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                filename:
                  type: array
                  items:
                    type: string
                    format: binary

After that, I documented the following endpoint ( that does a bulk insert of exercises with their zip files sources ) :

  /api/bulk_create_exercises:
    post:
      summary: "Creates multiple exercises into the system"
      operationId: createMultipleExercises
      security:
        - bearerAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/MultipleExercisesForm"
          multipart/form-data:
            schema:
              type: object
              properties:
                exercisesData:
                  $ref: "#/components/schemas/MultipleExercisesForm"
                files:
                  type: array
                  description: "The sources of the exercises, each in zip format"
                  minItems: 1
                  items:
                    type: string
                    format: binary
                    description: "The source of an exercise, in zip format"
                filesMapping:
                  type: array
                  description: "Mapping between the given file (to find out which data belong to exercise)"
                  minItems: 1
                  items:
                    type: object
                    properties:
                      filename:
                        type: string
                        description: "The name of the given source file"
                        example: "file1.zip"
                      exercise:
                        type: integer
                        description: "The location of the related exercise in the exercisesData array"
                    required:
                      - filename
                      - exercise
              required:
                - exercisesData
                - files
                - filesMapping
      responses:
        '200':
          description: OK
        # Definition of all error statuses
        default:
          description: "Whatever error : 4XX - Client error (Bad Request, Unauthorized, etc.) , 5XX - Server error"
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorObject"

I expected this to work but I got a nice 400 error :

When I look up inside the req before my error handler throws the 400 status code, I see that :

And the files are correctly uploaded :

I checked in the tests and there is only single upload tests

Thanks for your help 😉

[cdimascio]

@jy95 thanks for the PR! your work is a nice improvement over what is current. the change is merged and available in v3.2.2. thanks again!

[kulkarnipradnyas]

from request body i am sending a property files with correct type:string format:binary but still my validator is failing with 500 and in error as well in body object i cant see files property.I am not able to upload file.what is the solution? using latest version of this package.