Example for the new dashboard filters hooks

setup.php

@@ -34,6 +34,7 @@
 use GlpiPlugin\Example\Dropdown;
 use GlpiPlugin\Example\DeviceCamera;
 use GlpiPlugin\Example\Example;
+use GlpiPlugin\Example\Filters\ComputerModelFilter;
 use GlpiPlugin\Example\ItemForm;
 use GlpiPlugin\Example\RuleTestCollection;
 use GlpiPlugin\Example\Showtabitem;
@@ -232,6 +233,11 @@ function plugin_init_example() {
    // add new cards to dashboard grid
    $PLUGIN_HOOKS['dashboard_types']['example'] = [Example::class, 'dashboardTypes'];
    $PLUGIN_HOOKS['dashboard_cards']['example'] = [Example::class, 'dashboardCards'];
+
+   // Dashboard filter
+   $PLUGIN_HOOKS[Hooks::DASHBOARD_FILTERS]['example'] = [
+      ComputerModelFilter::class
+   ];
 }
 
 

src/Filters/ComputerModelFilter.php

@@ -0,0 +1,99 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * Example plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of Example.
+ *
+ * Example 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Example 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 Example. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2006-2022 by Example plugin team.
+ * @license   GPLv2 https://www.gnu.org/licenses/gpl-2.0.html
+ * @link      https://github.com/pluginsGLPI/example
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\Example\Filters;
+
+use ComputerModel;
+use DBmysql;
+use Glpi\Dashboard\Filters\AbstractFilter;
+
+class ComputerModelFilter extends AbstractFilter
+{
+    public static function getName(): string
+    {
+        return __("Computer model");
+    }
+
+    public static function getId(): string
+    {
+        return "plugin_example_computer_model";
+    }
+
+    public static function canBeApplied(string $table): bool
+    {
+        global $DB;
+
+        return $DB->fieldExists($table, ComputerModel::getForeignKeyField());
+    }
+
+    public static function getHtml($value): string
+    {
+        return self::displayList(
+            self::getName(),
+            is_string($value) ? $value : "",
+            self::getId(),
+            ComputerModel::class
+        );
+    }
+
+    public static function getCriteria(string $table, $value): array
+    {
+        if ((int) $value > 0) {
+            $field = ComputerModel::getForeignKeyField();
+            return [
+                "WHERE" => [
+                    "$table.$field" => (int) $value
+                ]
+            ];
+        }
+
+        return [];
+    }
+
+    public static function getSearchCriteria(string $table, $value): array
+    {
+        if ((int) $value > 0) {
+            return [
+                [
+                    'link'       => 'AND',
+                    'searchtype' => 'equals',
+                    'value'      => (int) $value,
+                    'field'      => self::getSearchOptionID(
+                        $table,
+                        ComputerModel::getForeignKeyField(),
+                        ComputerModel::getTable()
+                    ),
+                ]
+            ];
+        }
+
+        return [];
+    }
+}