title: Laravel Eloquent "WHERE NOT IN"
body: <p>I'm having trouble to write query in <code>laravel eloquent ORM</code>. </p>
  
  <p>my query is </p>
  
  <pre><code>SELECT book_name,dt_of_pub,pub_lang,no_page,book_price  
  FROM book_mast        
  WHERE book_price NOT IN (100,200);
  </code></pre>
  
  <p>Now I want to convert this query into laravel eloquent.</p>