Undefined variable happen inside of folder blade file

I have a problem that displaing table from database At page1.blade.php I can display the table. that is no problem.

However when I hit page2.blade.php (this file locate one lower folder) this error show up ErrorException (E_ERROR) Undefined variable: books

my code is like this @foreach ($books as $book) @endforeach

How to write correct code? Could somebody help me please.

via Chebli Mohamed