link_to syntax

<%= link_to display_text, link, { option } %>

The three options specific to link_to (:confirm, :popup, and :method)

link_to "Visit Other Site", "http://www.rubyonrails.org/", :confirm => "Are you sure?"
 # => Visit Other Site

 link_to "Help", { :action => "help" }, :popup => true
 # => Help

 link_to "View Image", @image, :popup => ['new_window_name', 'height=300,width=600']
 # => View Image

 link_to "Delete Image", @image, :confirm => "Are you sure?", :method => :delete
 # => Delete Image

Others:

• link_to_if
• link_to_unless
• link_to_unless_current
• mail_to
• url_for
  

http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#M001565