Dashboard widget update (#9515)

Implemented in Laravel
Doesn't use legacy PHP session
Several widgets have new features and settings, for example:

- Multiple ports in one graph
- Maps settings are configurable and override system settings but default to system settings
- Graylog stream and/or device selection
- Much improved graph widget selection
- Many more

DO NOT DELETE THIS TEXT

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app/Http/Controllers/Select/PortController.php

@@ -0,0 +1,94 @@
+<?php
+/**
+ * PortController.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  2018 Tony Murray
+ * @author     Tony Murray <murraytony@gmail.com>
+ */
+
+namespace App\Http\Controllers\Select;
+
+use App\Models\Port;
+
+class PortController extends SelectController
+{
+    /**
+     * Defines validation rules (will override base validation rules for select2 responses too)
+     *
+     * @return array
+     */
+    protected function rules()
+    {
+        return [
+            'device' => 'nullable|int',
+        ];
+    }
+
+    /**
+     * Defines search fields will be searched in order
+     *
+     * @param \Illuminate\Http\Request $request
+     * @return array
+     */
+    protected function searchFields($request)
+    {
+        return (array)$request->get('field', ['ifAlias', 'ifName', 'ifDescr', 'devices.hostname', 'devices.sysName']);
+    }
+
+    /**
+     * Defines the base query for this resource
+     *
+     * @param \Illuminate\Http\Request $request
+     * @return \Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Query\Builder
+     */
+    protected function baseQuery($request)
+    {
+        /** @var \Illuminate\Database\Eloquent\Builder $query */
+        $query = Port::hasAccess($request->user())
+            ->with(['device' => function ($query) {
+                $query->select('device_id', 'hostname', 'sysName');
+            }])
+            ->select('ports.device_id', 'port_id', 'ifAlias', 'ifName', 'ifDescr')
+            ->groupBy(['ports.device_id', 'port_id', 'ifAlias', 'ifName', 'ifDescr']);
+
+        if ($request->get('term')) {
+            // join with devices for searches
+            $query->leftJoin('devices', 'devices.device_id', 'ports.device_id');
+        }
+
+        if ($device_id = $request->get('device')) {
+            $query->where('ports.device_id', $device_id);
+        }
+
+        return $query;
+    }
+
+    public function formatItem($port)
+    {
+        /** @var Port $port */
+        $label = $port->getShortLabel();
+        $description = ($label == $port->ifAlias ? '' : ' - ' . $port->ifAlias);
+
+        return [
+            'id' => $port->port_id,
+            'text' => $label . ' - ' . $port->device->shortDisplayName() . $description,
+        ];
+    }
+}