link_to "View Post", :action => 'show', :controller => 'article', :id => @article
link_to("View Post", {:action => 'show', :controller => 'article', :id => @article})
<%= link_to "Detail", {:action=> 'detail', :id=> person.id}, :onclick => "javascript:window.open('page.html','popup','width=400,height=200');" %>