Not able to execute request for multipart/form-data

[vinaylondhe-highspot]

Q&A (please complete the following information)

• OS: macOS
• Browser: chrome
• Method of installation: dist
• Swagger-UI version: 3.29.0
• Swagger/OpenAPI version: OpenAPI 3.0

Describe the bug you're encountering

When multipart/form-data is selected as the Content-Type and a file is selected to be uploaded, nothing happens after clicking on Execute. The Execute button does not work at all.

To reproduce...

Steps to reproduce the behavior:

1. Go to swagger ui page
2. Select multipart/form-data as the Content-Type in the request body
3. Upload file to be sent in the request
4. Click on 'Execute'

Expected behavior

The request should be made to the appropriate endpoint. Instead, the request is not made at all

[hkosova]

@vinaylondhe-highspot can you provide an OpenAPI definition to reproduce the issue?

[vinaylondhe-highspot]

@hkosova So I can confirm that I am able to execute the request just fine when I have something like

   requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
                - filename
              properties:
                filename:
                  type: string
                  description: The file
                  format: binary

But when I have something like the below definition (basically when you can send either of multipart/form-data or application/json content for the same endpoint), I can confirm that the Execute button does not work

requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
                - file
              properties:
                file:
                  type: string
                  description: The file
                  format: binary
          application/json:
            schema:
              $ref: '#/components/schemas/item-spec'

And I want to use this version because of this bug fix #6223

[vinaylondhe-highspot]

And this is happening for the versions 3.29.0 and 3.30.0.

[tim-lai]

I believe that this issue has the same root cause as #6201. My comment

[tim-lai]

@vinaylondhe-highspot Imo, it would be much better api design to have separate api endpoints for multipart/form-data. Then you would know to explicitly expect and handle various files, permissions, and security.

[vinaylondhe-highspot]

@tim-lai I agree that its a much better API design to have separate api endpoints. Unfortunately, I cannot do that right now since it will break our existing clients