contact us form (n00b)

Im at a loss..and its something with my routes..

i have an index.html.erb that generates a partial

<% page_title("Contact Us") %>

<% content_for :banner do %>   <%= render :partial => 'contacts/banner' %> <% end %>

<%= render :partial => 'contacts/form' %>

The partial in the contacts directory _form.html.erb

<% form_tag :action => "contacts_mailer" do %>   <div>     <%= label :contact, :first_name, "First Name" %><br />     <%= text_field :contact, :first_name %>   </div>   <div>     <%= label :contact, :last_name, "Last Name" %><br />     <%= text_field :contact, :last_name %>   </div>

  <div>     <%= label :contact, :subject, "Subject" %><br />     <%= text_field :contact, :subject %>   </div>

  <div>     <%= label :contact, :body, "Message" %><br />     <%= text_area :contact, :body, :rows => 10 %>   </div>

  <div>     <%= label :contact, :email, "Email Address" %><br />     <%= text_field :contact, :email %>   </div>

  <div>     <%= submit_tag 'Send Request', :class => "btn" %>     <%= submit_tag 'Clear Form', :class => 'btn', :type => 'reset' %>   </div> <% end %>

and i have a contacts_controller with the following

class ContactsController < ApplicationController

  def index

  end

  def contacts_mailer       ApplicationMailer.deliver_contact_mailer(params[:contact])       flash[:notice] = "Your Message has been sent."       redirect_to home_path   end

end

And i have the ApplicationMailer setup according to a dozen tutorials.

the problem comes with the form action. i have called <% form_tag :action => "contacts_mailer" do %> <% form_tag :controller => "contacts", :action => "contacts_mailer" do %>

and in the source it shows <form method="post" action="/contact-us">

and i do have these in the routes

  map.contact_mailer 'contact-us', :controller => "contacts", :action => "contact_mailer"   map.contact 'contact-us', :controller => "contacts", :action => "index"

I im getting this error

Showing app/views/contacts/_whistle.html.erb where line #1 raised:

No route matches {:action=>"contacts_mailer"}

ive even created a contacts_mailer.html.erb but no dice.

any help would be awesome

thanks

Bob