title: Flask - how to get id of post after clicking on title
body: <p>I create a simply website about books. I display the title and description in books.html</p>
  
  <pre><code>&lt;div id="book-container"&gt;
  &lt;p&gt;&lt;h2&gt;{{ b.title }}&lt;/h2&gt;&lt;/p&gt;
  &lt;div&gt;&lt;p&gt;{{ b.description }}&lt;/p&gt;&lt;/div&gt;
  &lt;br&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>and my route file</p>
  
  <pre><code>@app.route('/show_books', methods=['GET', 'POST'])
  def show_books():
      books = Book.query.all()
      return render_template('books.html', title='Home', books=books)
  </code></pre>
  
  <p>I have problem, because I want to display more information about book after clicking on title. What is the best way to do it? Thanks for help!</p>