ok

src/Controllers/Book/Transformers/BookTransformer.php

@@ -24,6 +24,7 @@ class BookTransformer
             'book_summary' => $item->book ? $item->book->intro : '',
             'book_author' => $item->book ? $item->book->author : '',
             'cover_url' => $item->book ? $item->book->cover : '',
+            'keyword' => $item->book ? $item->book->keyword : '',
             'book_word_count' => $item->book ? $item->book->size : 0,
             'book_chapter_total' => $item->book ? $item->book->chapter_count : 0,
             'book_category_id' => $item->book ? $item->book->category_id : 0,
@@ -42,7 +43,6 @@ class BookTransformer
             'product_id' => $item->product_id,
             'is_on_shelf' => $item->is_on_shelf,
             'book_price' => (float) $item->price,
-            'keyword' => $item->keyword,
             'roles' => (string)$item->roles,
             'recommend_index' => $item->recommend_index,
             'is_show_index_content' => $item->is_show_index_content,