Save Responses

import { Model } from "survey-core";

// The definition can be a constant in the page — no database needed
const definition = {
  elements: [
    { type: "text", name: "email", title: "Your email", inputType: "email", isRequired: true },
    { type: "comment", name: "message", title: "How can we help?" }
  ]
};
const survey = new Model(definition);

// One endpoint: post the answers when the respondent completes the form
survey.onComplete.add(async (sender) => {
  await fetch("/api/responses", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ formId: "contact", data: sender.data })
  });
});

// POST /api/responses — store the answers exactly as they arrive
// bootstrap/app.php turns off TrimStrings and ConvertEmptyStringsToNull for /api/*: they would change "  a " and ""
Route::post('/api/responses', function (Request $request) {
    // The raw body, not $request->input(): PHP arrays would turn {} into [] in the stored JSON
    $body = json_decode($request->getContent(), flags: JSON_THROW_ON_ERROR);
    abort_unless(isset($body->formId, $body->data), 400, 'Expected { formId, data }');

    $id = StoredJson::insertResponse($body->formId, $body->data);   // one JSON document, stored as it arrived: 1.0 stays 1.0

    return response()->json(['id' => $id], 201);
});