Render templates without warnings when a site has no sections

_api_app/app/Sites/Sections/MessyTemplateRenderService.php

@@ -198,10 +198,13 @@ public function getBodyClassList(
         $isAutoResponsive,
         $isEditMode
     ) {
-        $classes = [
-            'xContent-' . $currentSection['name'],
-            'xSectionType-' . $currentSectionType,
-        ];
+        $classes = [];
+
+        if ($currentSection) {
+            $classes[] = 'xContent-' . $currentSection['name'];
+        }
+
+        $classes[] = 'xSectionType-' . $currentSectionType;
 
         if (! empty($tagSlug)) {
             $classes[] = 'xSubmenu-' . $tagSlug;
@@ -279,9 +282,12 @@ public function getPageEntriesClasses($currentSection, $tagSlug, $isResponsive)
         $classes = [
             'xEntriesList',
             'clearfix',
-            'xSection-' . $currentSection['name'],
         ];
 
+        if ($currentSection) {
+            $classes[] = 'xSection-' . $currentSection['name'];
+        }
+
         if (! empty($tagSlug)) {
             $classes[] = 'xTag-' . $tagSlug;
         }

_api_app/app/Sites/Sections/SectionTemplateRenderService.php

@@ -217,10 +217,13 @@ public function getBodyClasses($siteTemplateSettings, $sections, $sectionSlug, $
         $currentSection = $this->getCurrentSection($sections, $sectionSlug);
         $currentSectionType = $this->getCurrentSectionType($currentSection);
 
-        $classes = [
-            'xContent-' . $currentSection['name'],
-            'xSectionType-' . $currentSectionType,
-        ];
+        $classes = [];
+
+        if ($currentSection) {
+            $classes[] = 'xContent-' . $currentSection['name'];
+        }
+
+        $classes[] = 'xSectionType-' . $currentSectionType;
 
         if (! empty($tagSlug)) {
             $classes[] = 'xSubmenu-' . $tagSlug;
@@ -257,10 +260,11 @@ public function getPageEntriesAttributes($sections, $sectionSlug, $tagSlug)
     {
         $currentSection = $this->getCurrentSection($sections, $sectionSlug);
         $attributes = [];
-        $classes = [
-            'xEntriesList',
-            'xSection-' . $currentSection['name'],
-        ];
+        $classes = ['xEntriesList'];
+
+        if ($currentSection) {
+            $classes[] = 'xSection-' . $currentSection['name'];
+        }
 
         if (! empty($tagSlug)) {
             $classes[] = 'xTag-' . $tagSlug;

_api_app/tests/Feature/SectionTemplateRenderServiceTest.php

@@ -0,0 +1,44 @@
+<?php
+
+use App\Sites\Sections\DefaultTemplateRenderService;
+use App\Sites\Sections\MessyTemplateRenderService;
+
+function sectionTemplateRenderSettings(): array
+{
+    return ['pageLayout' => ['responsive' => 'no', 'centeredContents' => 'no']];
+}
+
+it('renders default template classes for a site without sections', function () {
+    $service = new DefaultTemplateRenderService;
+
+    $bodyClasses = $service->getBodyClasses(sectionTemplateRenderSettings(), [], null, null, false);
+    $pageEntriesAttributes = $service->getPageEntriesAttributes([], null, null);
+
+    expect($bodyClasses)->toBe('xSectionType-default')
+        ->and($pageEntriesAttributes)->toContain('xEntriesList')
+        ->and($pageEntriesAttributes)->not->toContain('xSection-');
+});
+
+it('renders messy template classes for a site without sections', function () {
+    $service = new MessyTemplateRenderService;
+
+    $bodyClasses = $service->getBodyClassList(sectionTemplateRenderSettings(), null, 'default', null, false, false, false);
+    $pageEntriesClasses = $service->getPageEntriesClasses(null, null, false);
+
+    expect($bodyClasses)->toBe('xSectionType-default')
+        ->and($pageEntriesClasses)->toContain('xEntriesList')
+        ->and($pageEntriesClasses)->not->toContain('xSection-');
+});
+
+it('renders the current section name in template classes', function () {
+    $sections = [['name' => 'about', '@attributes' => ['type' => 'default']]];
+    $defaultService = new DefaultTemplateRenderService;
+    $messyService = new MessyTemplateRenderService;
+
+    expect($defaultService->getBodyClasses(sectionTemplateRenderSettings(), $sections, 'about', null, false))
+        ->toBe('xContent-about xSectionType-default')
+        ->and($defaultService->getPageEntriesAttributes($sections, 'about', null))->toContain('xSection-about')
+        ->and($messyService->getBodyClassList(sectionTemplateRenderSettings(), $sections[0], 'default', null, false, false, false))
+        ->toBe('xContent-about xSectionType-default')
+        ->and($messyService->getPageEntriesClasses($sections[0], null, false))->toContain('xSection-about');
+});