Ruby on Rails 2.1 and HTML - RHTML

RHTML is HTML mixed with Ruby, using HTML tags. All of Ruby is available for programming alongwith HTML:

Following is the syntax of using Ruby with HTML:

<% %>   # executes the Ruby code as a block
<%= %>  # executes the Ruby code and displays the result

Example:

<ul>
<% @products.each do |p| %>
  <li><%=  @p.name %></li>
<% end %>
</ul>

The output of anything in <%= %> tags is directly copied to the HTML output stream. To secure against HTML injection, use the h() function to html_escape the output

For example::

<%=h @user_entered_notes %>