SiteTree search functionality

app/src/Pages/PageController.php

@@ -4,11 +4,86 @@
 // extends global PageController class
 //namespace Site\Pages;
 
+use SilverStripe\Control\Controller;
 use SilverStripe\CMS\Controllers\ContentController;
 use SilverStripe\ORM\FieldType\DBDatetime;
+use SilverStripe\View\ArrayData;
+use SilverStripe\CMS\Model\SiteTree;
+use SilverStripe\ORM\PaginatedList;
+use SilverStripe\Forms\Form;
+use SilverStripe\Forms\FieldList;
+use SilverStripe\Forms\TextField;
+use SilverStripe\Forms\FormAction;
+use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Control\HTTPRequest;
 
 class PageController extends ContentController
 {
+    private static $allowed_actions = [
+        'SearchForm',
+    ];
+
+    private $site_message;
+    private $search_term;
+
+    public function index(HTTPRequest $request)
+    {
+        $search = $request->getVar('q');
+        if ($search) {
+            return $this->doSearch($search);
+        }
+
+        return $this->render();
+    }
+
+    public function SearchForm()
+    {
+        return Form::create(
+            $this,
+            __FUNCTION__,
+            FieldList::create(
+                TextField::create('q', 'Search ...')
+            ),
+            FieldList::create(
+                FormAction::create(
+                    'doSearch',
+                    'Find it!'
+                )
+            ),
+            RequiredFields::create(['q'])
+        )->setFormMethod('POST');
+    }
+
+    public function doSearch($data)
+    {
+        $this->search_term = is_array($data) ? $data['q'] : $data;
+
+        return $this->renderWith([__CLASS__.'_search', 'Page']);
+    }
+
+    public function SearchResults()
+    {
+        $term = $this->search_term;
+        if(!$term) {
+            return false;
+        }
+
+        $results = SiteTree::get()->filterAny([
+            'Title:PartialMatch' => $term,
+            'Content:PartialMatch' => $term,
+        ])->sort('Created DESC');
+
+        return ArrayData::create([
+            'Title' => 'Search query "'.$term.'"',
+            'Results' => PaginatedList::create($results),
+        ]);
+    }
+
+    public function getParentRecursively()
+    {
+        return $this->Level(1);
+    }
+
     public static function setSiteWideMessage($message, $type, $request = null)
     {
         $request = $request ? $request : Controller::curr()->getRequest();
@@ -19,6 +94,8 @@ class PageController extends ContentController
                 'Type' => $type,
             ])
         );
+
+        return true;
     }
 
     public function getSiteWideMessage()

app/templates/Layout/PageController_search.ss

@@ -0,0 +1,45 @@
+<% with $SearchResults %>
+<div id="PageContainer" class="page action{$Action}">
+    <div class="page-content">
+        <h1 class="page-header container no-elements">$Title</h1>
+
+        <div class="page-content">
+            <% if $Results %>
+            <div id="SearchAccordion{$ID}">
+                <% loop $Results %>
+                    <div class="card">
+                        <div class="card-header" id="Heading{$ID}{$Up.ID}">
+                            <h5 class="mb-0">
+                                <strong
+                                        data-toggle="collapse"
+                                        data-target="#Collapse{$ID}{$Up.ID}"
+                                        aria-expanded="false"
+                                        aria-controls="Collapse{$ID}{$Up.ID}"
+                                >
+                                    $Title
+                                </strong>
+                            </h5>
+                        </div>
+
+                        <div
+                                id="Collapse{$ID}{$Up.ID}"
+                                class="collapse"
+                                aria-labelledby="Heading{$ID}{$Up.ID}"
+                                data-parent="#SearchAccordion{$Up.ID}"
+                        >
+                            <div class="card-body">
+                                <p>$Summary</p>
+                                <a href="{$Link}">Learn More</a>
+                            </div>
+                        </div>
+                    </div>
+                <% end_loop %>
+            </div>
+            <% else %>
+                <h2>Nothing was found.</h2>
+            <% end_if %>
+        </div>
+
+    </div>
+</div>
+<% end_with %>