Missing file browser in "Try it out" for multipart/form file uploads

Previously (in OpenAPI 2.0), when creating an endpoint which takes a file upload via a multipart/form POST request, the Try it out section in Swagger UI showed a Choose File button to select a file from my harddisk which then got uploaded when clicking the execute button.

Following the docs on how to do such uploads in OpenAPI 3.0.0, however, I am missing that button in Swagger UI and see a textbox instead with a JSON representation of the schema.

Is that expected behaviour (as in not yet implemented for OpenAPI 3.0.0) or is the file upload in my API definition incorrectly written?

Q	A
Bug or feature request?	Could be both, depending on if this is expected behaviour
Which Swagger/OpenAPI version?	OpenAPI 3.0.0
Which Swagger-UI version?	3.3.2
How did you install Swagger-UI?	https://editor.swagger.io and self-hosted dist folder on nginx
Which browser & version?	Chrome 62.0 & Opera 48.0
Which operating system?	Ubuntu 14.04

Demonstration API definition

Working example in OpenAPI 2.0:

swagger: '2.0'
info:
  title: Some API
  version: '1'
paths:
  /conversion/nmea/geojson:
    post:
      consumes:
        - multipart/form-data
      parameters:
        - in: formData
          name: file
          type: file
      produces:
        - text/plain
      responses:
        '200':
          description: OK
          schema:
            type: string
            example: "File upload successful"

Non-working example in OpenAPI 3.0.0:

openapi: 3.0.0
info:
  title: Some API
  version: "1"

paths:
  /upload:
    post:
      requestBody:
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file:
                  type: string
                  format: binary
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                type: string
                example: "File upload successful"

Expected Behavior

Current Behavior

[jonbcampos]

I can say that the update worked for me

On Thu, Jul 12, 2018, 8:43 AM Ron [e-mail] wrote:

@here https://github.com/here - this has been implemented and is supposed to work (just tested it myself). If you encounter an issue, please file a new ticket with steps and details to help us investigate.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/swagger-api/swagger-ui/issues/3784#issuecomment-404557161, or mute the thread https://github.com/notifications/unsubscribe-auth/AAIgzVrZHv4eu_5WtTe4fBU6bPh6lV6mks5uF26IgaJpZM4P_DSW .

[webron]

@here - this has been implemented and is supposed to work (just tested it myself). If you encounter an issue, please file a new ticket with steps and details to help us investigate.