Problems with incrementing and multiple submits

Rails
1

Hi,

Can someone help me with the following questions. I am trying to create
a link_to_remote link named add. Whenever I click add, a new label and
text field will be populated.

Example:

(This is already there)
Book 1 text_field add(this is the link)
…when add is clicked…
…the following is populated…

Book 2 text_field

My question is how do I increment the number? How do I submit the
various fields, populated and the one that is already there, that are in
the form ? I read some where that it has to do with the id of the field.

This is my controller

def book
@book = Book.new
end

def save_book
@book = Book.new(params[:book])
if @book.save
redirect_to :action => ‘some_page’
else
render :action=> ‘book’
end
end

def add_book
@count = 1
render(:partial => ‘additional_book’)
end

This is my view

…_additional_book.rhtml…

Book <%= @count %> <%= text_field :book, :book, :id => @count %>

…book.rhtml…

<% form_for :book, :url => { :action => :save_book}, :html => { :id => "book" } do |n| %> 
</tr>
<tr>
  <td style="width: 209px;">
    <div id="button">
<p><%= link_to_function 'Previous', "$('book').submit()" -%></p>
    </div>
Book 0 <%= n.text_field :book %> <%= link_to_remote( "add", :update => "abc", :url =>{ :action => :add_book }, :position => "bottom", :success => "@count ++") %>
<% end %>

Thanks