multipart/form-data - value must be an object

[Ol1BoT]

version: v1.13.0

When I POST a multipart/form I get the following:

code=400, message=request body has an error: doesn't match schema: value must be an object, internal=request body has an error: doesn't match schema: value must be an object

I've clipped off the rest for brevity.

The yaml looks as follows:

  /api/v1/upload/{id}:
    post:
      operationId: FileUpload
      x-requires-permission: user:write
      parameters:
        in: path
        name: id
        schema:
          type: string
        required: true
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file:
                  type: string
                  format: binary

and the cURL command i'm using is

curl --request POST \
  --url https://site.com/api/v1/upload/<id> \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file=@/uploads/to_upload.zip

I seem to be following the openapi spec to a T, I also added in the following:

openapi3filter.RegisterBodyDecoder("application/zip", openapi3filter.FileBodyDecoder)
openapi3filter.RegisterBodyDecoder("multipart/form-data", openapi3filter.FileBodyDecoder)

I don't think the application/zip is necessary but I've included it anyway.

I've been using #514 as a reference but I've seem to run out of things to try.

[Ol1BoT]

removing the middleware.OapiRequestValidator(swaggerSpec) "fixes" the issue.

Is it something I'm doing incorrectly or should I investigate why the middleware isn't considering this a valid object?

[Ol1BoT]

issue with kin-openapi, closing.

[lukasbash]

I am facing the same problem. Can you elaborate a bit how kin-openapi is connected to this issue? Also, skipping the validation is not really an option for me.

Is there something I can change without skipping the validator?

[Ol1BoT]

@lukasbash
Delete openapi3filter.RegisterBodyDecoder("multipart/form-data", openapi3filter.FileBodyDecoder)

[lukasbash]

@Ol1BoT
I already removed this line. Without the following code

			Skipper: func(ctx echo.Context) bool {
				cts := ctx.Request().Header["Content-Type"]

				return lo.SomeBy(cts, func(ct string) bool {
					return strings.Contains(ct, "multipart/form-data")
				})
			},

I get an error request body has an error: failed to decode request body: path file: unsupported content type \"image/png\"

This is my API requestBody content:

          multipart/form-data:
            schema:
              type: object
              required:
                - "file"
              properties:
                file:
                  type: string
                  format: binary
            encoding:
              file:
                contentType: image/png, image/jpeg

EDIT: Never mind as I forgot to add the image body decoders. Thank you so much for the support!