Rails Image_tag Размер ссылки
<%= link_to image_tag('btn.png'), '/books/index' %>
--> <a href="/books/index"><img alt="Btn" src="/assets/btn.png" /></a>
Outstanding Otter
<%= link_to image_tag('btn.png'), '/books/index' %>
--> <a href="/books/index"><img alt="Btn" src="/assets/btn.png" /></a>