Dynamic Select setting (#13179)

* Dynamic Select setting
embeds select2 and uses ajax to call to backend for options
poller-group included

* fix validation a bit

* fix typehint

* move minProperties into the select schema

* Change dashboard-select to select-dynamic
Love deleting code

* Change dashboard-select to select-dynamic
Love deleting code
wire up a few select2 options

* fix whitespace

* Not a model, just an object

* Suggestion from @SourceDoctor autocomplete values of select and select-dynamic

Got a little creative with InternalHttpRequest...

app/Http/Controllers/Select/PollerGroupController.php

@@ -0,0 +1,66 @@
+<?php
+/*
+ * PollerGroupController.php
+ *
+ * -Description-
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package    LibreNMS
+ * @link       http://librenms.org
+ * @copyright  2021 Tony Murray
+ * @author     Tony Murray <[email protected]>
+ */
+
+namespace App\Http\Controllers\Select;
+
+use App\Models\PollerGroup;
+use Illuminate\Support\Str;
+
+class PollerGroupController extends SelectController
+{
+    protected function searchFields($request)
+    {
+        return ['group_name', 'descr'];
+    }
+
+    protected function baseQuery($request)
+    {
+        return PollerGroup::query()->select(['id', 'group_name']);
+    }
+
+    protected function formatResponse($paginator)
+    {
+        // prepend the default group, unless filtered out
+        if ($this->includeGeneral()) {
+            $general = new PollerGroup;
+            $general->id = 0;
+            $general->group_name = 'General';
+            $paginator->prepend($general);
+        }
+
+        return parent::formatResponse($paginator);
+    }
+
+    private function includeGeneral(): bool
+    {
+        if (request()->has('id') && request('id') !== 0) {
+            return false;
+        } elseif (request()->has('term') && ! Str::contains('general', strtolower(request('term')))) {
+            return false;
+        }
+
+        return true;
+    }
+}