FEATURE: Allow to switch from search to filter mode

Classes/Controller/SearchController.php

@@ -44,6 +44,17 @@ class SearchController extends ActionController
         parent::__construct();
     }
 
+    public function initializeSearchAction()
+    {
+        if (isset($this->settings['searching']['mode']) && $this->settings['searching']['mode'] === 'filter'
+            && $this->request->hasArgument('searchRequest') === false
+        ) {
+            $this->request->setArguments([
+                'searchRequest' => $this->objectManager->get(SearchRequest::class),
+            ]);
+        }
+    }
+
     /**
      * Process a search and deliver original request and result to view.
      *

Documentation/source/configuration.rst

@@ -346,3 +346,20 @@ Searching
             factor = 2
             missing = 1
         }
+
+.. _mode:
+
+``mode``
+""""""""
+
+    Used by: Controller while preparing action.
+
+    Define to switch from search to filter mode.
+
+    Example::
+
+        plugin.tx_searchcore.settings.searching {
+            mode = filter
+        }
+
+    Only ``filter`` is allowed as value. Will submit an empty query to switch to filter mode.

Tests/Unit/Controller/SearchControllerTest.php

@@ -0,0 +1,99 @@
+<?php
+namespace Codappix\Tests\Unit\Controller;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use Codappix\SearchCore\Controller\SearchController;
+use Codappix\SearchCore\Domain\Model\SearchRequest;
+use Codappix\SearchCore\Domain\Search\SearchService;
+use Codappix\SearchCore\Tests\Unit\AbstractUnitTestCase;
+use TYPO3\CMS\Extbase\Mvc\Web\Request;
+use TYPO3\CMS\Extbase\Object\ObjectManager;
+
+class SearchControllerTest extends AbstractUnitTestCase
+{
+    /**
+     * @var SearchController
+     */
+    protected $subject;
+
+    /**
+     * @var Request
+     */
+    protected $request;
+
+    public function setUp()
+    {
+        \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(
+            \TYPO3\CMS\Core\Cache\CacheManager::class
+        )->setCacheConfigurations([
+            'extbase_object' => [
+                'backend' => \TYPO3\CMS\Core\Cache\Backend\NullBackend::class,
+            ],
+            'extbase_datamapfactory_datamap' => [
+                'backend' => \TYPO3\CMS\Core\Cache\Backend\NullBackend::class,
+            ],
+        ]);
+
+        parent::setUp();
+
+        $searchService = $this->getMockBuilder(SearchService::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->request = new Request();
+
+        $this->subject = new SearchController($searchService);
+        $this->inject($this->subject, 'request', $this->request);
+        $this->inject($this->subject, 'objectManager', new ObjectManager());
+    }
+
+    /**
+     * @test
+     */
+    public function searchRequestArgumentIsAddedIfModeIsFilterAndArgumentDoesNotExist()
+    {
+        $this->inject($this->subject, 'settings', [
+            'searching' => [
+                'mode' => 'filter',
+            ]
+        ]);
+
+        $this->subject->initializeSearchAction();
+        $this->assertInstanceOf(
+            SearchRequest::class,
+            $this->request->getArgument('searchRequest'),
+            'Search request was not created.'
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function searchRequestArgumentIsNotAddedIfModeIsNotFilter()
+    {
+        $this->inject($this->subject, 'settings', ['searching' => []]);
+
+        $this->subject->initializeSearchAction();
+        $this->assertFalse(
+            $this->request->hasArgument('searchRequest'),
+            'Search request should not exist.'
+        );
+    }
+}