adding a class to a link_to is breaking the link

<%= link_to "Add to your favorites list",{:controller => 
            'favourite_companies', :action =>'create'}, 
            :company_id=>"#{@company.id}",   
            :company_name=>"#{@company.company_name}",
            :class=>"ui-button-text button_text"}  %>

try this

<%= link_to "Add to your favorites list", :controller => 
            'favourite_companies', :action =>'create', 
            :company_id=>"#{@company.id}",   
            :company_name=>"#{@company.company_name}",
            { :class=>"ui-button-text button_text" }  %>

Since the :class should be in :html_options (refering to API)

link_to(body, url, html_options = {})