Hide the custom type input field if not needed to improve the UX

assets/controllers/pages/association_edit_type_select_controller.js

@@ -0,0 +1,44 @@
+/*
+ * 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";
+
+export default class extends Controller {
+
+    static targets = [ "display", "select" ]
+
+    connect()
+    {
+        this.update();
+        this.selectTarget.addEventListener('change', this.update.bind(this));
+    }
+
+    update()
+    {
+        //If the select value is 0, then we show the input field
+        if( this.selectTarget.value === '0')
+        {
+            this.displayTarget.classList.remove('d-none');
+        }
+        else
+        {
+            this.displayTarget.classList.add('d-none');
+        }
+    }
+}