Forum Discussion

arty13's avatar
arty13
New Contributor
4 years ago

OpenApi 3 specify all Query Parameters using a single Schema ref with Marshmallow Plugin

Hi, I have a python project and I am using Marshmallow to define my schemas for input, output and query parameters. I am now trying to create my OpenAPI 3 docs using apispec library and I'm run...
Swagger Core
ponelat's avatar
ponelat
Staff
3 years ago

Hi arty13 

 

I'm not familiar with the Marshmellow enough to comment on that side, but for the OpenAPI side it sounds like you're after a groups of $refs which isn't support in OpenAPI yet (unfortunately, I think it's an important feature too). You can track the spec issue here https://github.com/OAI/OpenAPI-Specification/issues/445 (it's old, but you can ping to get it to the attention of the OpenAPI spec team which meets weekly).

 

Not many workarounds exist.

You could write a script to inject a bunch of $refs, something that would create the following:

parameters:
- $ref: '#/components/parameters/One'
- $ref: '#/components/parameters/Two'
- $ref: '#/components/parameters/N'
# etc...
components:
  parameters:
    One: 
      name: one
      in: query
      schema:
        type: string
# etc...

 

We're also looking to address this with a new side-spec called Overlays (https://github.com/OAI/Overlay-Specification/) which would be a standard way of defining mutations to a base definition.

 

At this rate there may be a way of doing this with Marshmellow (to inject all those parameters), perhaps reach out to the Marshmellow team and/or GitHub issues there? Feel free to link to this issue if it helps.