Variable Presets

import { SurveyCreator } from "survey-creator-js";

const creator = new SurveyCreator({
  variablePresets: {
    definition: {               // describes the variables and how authors edit them
      elements: [{
        type: "dropdown", name: "customerTier", title: "Customer plan",
        choices: ["basic", "premium"]
      }]
    },
    presets: await fetch(`/api/variable-presets/${formId}`).then(r => (r.ok ? r.json() : []))
  }
});

// Save the presets when an author edits them
creator.onVariablePresetsChanged.add((_, options) => {
  if (options.reason === "edit") {
    fetch(`/api/variable-presets/${formId}`, {
      method: "PUT",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(options.variablePresets)
    });
  }
});

// GET /api/variable-presets/{formId} — return the stored variable presets (404 if none yet)
Route::get('/api/variable-presets/{formId}', function (string $formId) {
    $json = DB::table('variable_presets')->where('key', $formId)->value('json') ?? abort(404, 'No presets saved yet');

    return response($json)->header('Content-Type', 'application/json');
});

// PUT /api/variable-presets/{formId} — store the variable presets as-is: it's one JSON document
Route::put('/api/variable-presets/{formId}', function (Request $request, string $formId) {
    Gate::authorize('edit-forms');                                           // editing is an admin action: 403 otherwise
    // The raw body, not $request->input(): PHP arrays would turn {} into [] in the stored JSON
    $presets = json_decode($request->getContent(), flags: JSON_THROW_ON_ERROR);
    StoredJson::put('variable_presets', $formId, $presets);                  // stored as it arrived: 1.0 stays 1.0

    return response()->noContent();
});