Custom Transport

Provide transport when the backend contract does not match the default JSON transport.

mountForm(container, {
  schema,
  transport: {
    async submit(request) {
      const result = await modelClient.predict({
        values: request.serializedValues,
        signal: request.signal,
      });

      return {
        reports: {
          prediction: result.prediction,
        },
        meta: {
          requestId: result.requestId,
        },
      };
    },
  },
});

Use createJsonTransport(...) only when the backend matches MLForm’s default JSON contract. Otherwise keep a custom transport.