JSON Schema validation issue on Backend

[ramanqul]

Hi everyone,

I am currently working on a dynamic solution to store the React JSON Schema on the Backend and then load it to the Frontent page.

I have the following endpoints:

POST /forms

GET /forms/:id

During the POST operation I want to validate the React JSON schema before saving it using JSON Schema Validator. Unfortunately my Backend doesn't use TS/JS/Node.js and I can't use any existing validators from react-jsonschema-form repository.

I've tried to validate the React JSON Schema against JSON Schema Draft-7 and other versions however it fails because for some cases there are unknown keywords (please take a look at the attached json-schema-example.json). For instance the multiSelect keyword, it is unknown for format="segment_select" and is not part of any JSON Schema notation including the Draft-7.

The ideal solution I am looking for is to customize the schema control using formats however I need to get all formats and their semantics that are not part of JSON Schema standard.
The worst case solution is to have a vocabulary of all the unknown keywords.

Thank you in advance.