Visualize generic object/JSON data of element history data as pretty tree structure on log detail page

assets/controllers/elements/json_formatter_controller.js

@@ -0,0 +1,40 @@
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2023 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+import {Controller} from "@hotwired/stimulus";
+
+import JSONFormatter from 'json-formatter-js';
+
+/**
+ * This controller implements an element that renders a JSON object as a collapsible tree.
+ * The JSON object is passed as a data attribute.
+ * You have to apply the controller to a div element or similar block element which can contain other elements.
+ */
+export default class extends Controller {
+    connect() {
+        const depth_to_open = this.element.dataset.depthToOpen ?? 0;
+        const json_string = this.element.dataset.json;
+        const json_object = JSON.parse(json_string);
+
+        const formatter = new JSONFormatter(json_object, depth_to_open);
+
+        this.element.appendChild(formatter.render());
+    }
+}