metosin/malli

Custom key mapping function for `malli.json-schema/transform`?

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#273 opened on Oct 7, 2020

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 (3 comments) (0 reactions) (0 assignees)Clojure (237 forks)batch import
enhancementhelp wanted

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Description

Hi! I've just picked up Malli for a project, and I was wondering if there is a way to use a custom key-fn (as in clojure.data.json or Jsonista's mappers) when converting to JSON Schema. My spec has namespaced keys, and the namespaces are dropped in the exported JSON Schema. For a bit of context, I'm working with Kafka streams, and will be feeding some of the topics to Elasticsearch. I would like to use their specified naming conventions when sending the data there (along with the corresponding schema). I can easily get the data as I need it this via a custom serde, but I'd rather not have to process the exported JSON schema, too.

Thanks for any pointers you can provide, and for this awesome library!

Contributor guide

Research direction
Investigate the current implementation of `malli.json schema/transform` and identify where key transformation occurs. Propose a way to accept a custom key fn parameter.
Tech stack
clojure
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
ClojureMalli
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70