softwaremill / softwaremill/tapir

multipleOf is not supported in sttp.apispec.Schema

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Dominant language
Scala
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Description

multipleOf is mentioned in the swagger.io documentation to specify a number must be a multiple of another. This is not in the Schema class.

Was asked by adamw to raise an issue who believes that 'adding a new validator should do the trick'.

This is currently requested by a client of mine as a way of reporting to end-users valid values that can be sent so they can configure their UI as appropriate.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the sttp.apispec.Schema class and the validator mechanism referenced in the issue. Trace how existing numeric constraints are represented and emitted, then confirm that multipleOf is included in the generated API specification and validated as expected.

Written by the indexing model from the issue text.

Assessment

Tech stack
openapi, scala
Domain
api
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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