Rename variables for clarity.

app/controllers/App.php

@@ -122,7 +122,7 @@ class App extends Controller
         return $page + 1;
     }
 
-    public static function books($page = 1, $per_page = 10, $orderby = 'title', $license = '', $subject = '')
+    public static function catalogData($page = 1, $per_page = 10, $orderby = 'title', $license = '', $subject = '')
     {
         $request = new \WP_REST_Request('GET', '/pressbooks/v2/books');
         $request->set_query_params([

app/controllers/FrontPage.php

@@ -29,9 +29,9 @@ class FrontPage extends Controller
         return __('Our Latest Titles', 'aldine');
     }
 
-    public function books()
+    public function catalogData()
     {
         $page = (get_query_var('page')) ? get_query_var('page') : 1;
-        return App::books($page, 3);
+        return App::catalogData($page, 3);
     }
 }

app/controllers/PageCatalog.php

@@ -100,12 +100,12 @@ class PageCatalog extends Controller
         ];
     }
 
-    public function books()
+    public function catalogData()
     {
         $page = (get_query_var('paged')) ? get_query_var('paged') : 1;
         $orderby = (get_query_var('orderby')) ? get_query_var('orderby') : 'title';
         $subject = (get_query_var('subject')) ? get_query_var('subject') : '';
         $license = (get_query_var('license')) ? get_query_var('license') : '';
-        return App::books($page, 9, $orderby, $license, $subject);
+        return App::catalogData($page, 9, $orderby, $license, $subject);
     }
 }

resources/views/page-catalog.blade.php

@@ -40,15 +40,15 @@
       </div>
     </div>
     <div class="books">
-      @foreach($books['books'] as $book)
+      @foreach($catalog_data['books'] as $book)
         @include('partials.book', ['book' => $book])
       @endforeach
     </div>
-    @if($books['pages'] > 1)
+    @if($catalog_data['pages'] > 1)
     <nav class="catalog-navigation">
       @if($previous_page)<a class="previous" data-page="{{ $previous_page }}" href="{{ network_home_url("/catalog/page/$previous_page/") }}">@php(include get_theme_file_path() . '/dist/' . Aldine\svg_path('images/left-arrow.svg')) {{ __('Previous', 'aldine') }}</a>@endif
       <div class="pages">
-      @for($i = 1; $i <= $books['pages']; $i++)
+      @for($i = 1; $i <= $catalog_data['pages']; $i++)
         @if($i === $current_page)
           <span class="current">{{ $i }}</span>
         @else
@@ -56,7 +56,7 @@
         @endif
       @endfor
       </div>
-      @if($next_page <= $books['pages'])<a class="next" data-page="{{ $next_page }}" href="{{ network_home_url("/catalog/page/$next_page/") }}">{{ __('Next', 'aldine') }} @php(include get_theme_file_path() . '/dist/' . Aldine\svg_path('images/right-arrow.svg'))</a>@endif
+      @if($next_page <= $catalog_data['pages'])<a class="next" data-page="{{ $next_page }}" href="{{ network_home_url("/catalog/page/$next_page/") }}">{{ __('Next', 'aldine') }} @php(include get_theme_file_path() . '/dist/' . Aldine\svg_path('images/right-arrow.svg'))</a>@endif
     </nav>
     @endif
   </section>

resources/views/partials/front-page-catalog.blade.php

@@ -1,8 +1,8 @@
 <div id="latest-titles" class="latest-books w-100">
   <h3 class="tc ttu">{{ $latest_books_title }}</h3>
   <div class="track flex flex-row flex-wrap justify-center items-center">
-    <div class="books flex flex-column justify-center items-center order-0 order-1-l flex-row-l justify-between-l" data-total-pages="{{ $books['pages'] }}" data-next-page="2">
-      @foreach($books['books'] as $book)
+    <div class="books flex flex-column justify-center items-center order-0 order-1-l flex-row-l justify-between-l" data-total-pages="{{ $catalog_data['pages'] }}" @if($next_page <= $catalog_data['pages'])data-next-page="{{ $next_page }}"@endif>
+      @foreach($catalog_data['books'] as $book)
         <div class="book flex flex-column justify-end w-100">
           @if(isset($book['metadata']['keywords']))
           <p class="subject tc ma0">
@@ -19,7 +19,7 @@
       @endforeach
     </div>
     @if($previous_page)<a class="previous db mr-auto f1 order-1 order-0-l" data-page="{{ $previous_page }}" href="{{ network_home_url("/page/$previous_page/#latest-titles") }}">@php(include get_theme_file_path() . '/dist/' . Aldine\svg_path('images/left-arrow.svg'))</a>@endif
-      @if($next_page <= $books['pages'])<a class="next ml-auto order-2 db f1" data-page="{{ $next_page }}" href="{{ network_home_url("/page/$next_page/#latest-titles") }}">@php(include get_theme_file_path() . '/dist/' . Aldine\svg_path('images/right-arrow.svg'))</a>@endif
+      @if($next_page <= $catalog_data['pages'])<a class="next ml-auto order-2 db f1" data-page="{{ $next_page }}" href="{{ network_home_url("/page/$next_page/#latest-titles") }}">@php(include get_theme_file_path() . '/dist/' . Aldine\svg_path('images/right-arrow.svg'))</a>@endif
   </div>
   <div class="catalog-link tc">
     <a class="button button-inverse button-wide" href="{{ network_home_url('/catalog/') }}">{{ __('View Complete Catalog', 'aldine') }}</a>