ruby on rails - How can I stop a form repeating using fields_for? -

i have table of venues each can have many offers.

i have form adds offers venues venues edit page.

once submit form newly created offer shown partial instead of form clearing allow offer entered, form created.

so if enter 5 offers have 6 add new offer forms, 5 of them details entered saved ones.

my code looks this:

venue model

class venue < activerecord::base   has_many :offers   accepts_nested_attributes_for :offers, :reject_if => lambda { |a| a[:title].blank? } end 

edit - venue controller

class venuescontroller < applicationcontroller   protect_from_forgery :only => [:update, :delete, :create]    load_and_authorize_resource    def index     if       @venues = venue.with_type(params[:venuetypes]).with_area(params[:areas]).order("average_rating desc").all     else       @venues = venue.all     end     @venues = @venues.paginate :per_page => 15, :page => params[:page]   end    def new     @venue = venue.new   end    def create     @venue = venue.new params[:venue]     if @venue.save       flash[:notice] = 'venue added'       redirect_to venues_path     else       render :action => :new     end   end    def edit     @venue = venue.find(params[:id])     1.times { @venue.offers.build }   end    def update     @venue = venue.find(params[:id])     @venue.attributes = params[:venue]     if @venue.save!       flash[:notice] = 'venue updated successfully'      redirect_to :back     end   end    def show     @venue = venue.find(params[:id])     @review = review.new   end    def destroy     venue.find(params[:id]).destroy     flash[:notice] = 'venue deleted successfully'     redirect_to venues_path   end end 

venues edit.html.erb

  <%= form_for @venue |f| %>     <div class="edit_venue_details">        <h2 class="venue_show_orange">offers</h2>        <% if @venue.offers.count.zero? %>         <div class="no_reviews">           no offers added yet.         </div>       <% else %>         <%= render :partial => 'offers/offer', :collection => @venue.offers %>       <% end %>       <div class="clearall"></div>     </div>      <h2 class="edit_venue_sub_header">add new offer</h2>      <%= f.fields_for :offers |offer| %>       <p class="edit_venue">title: <br>       <%= offer.text_field :title, :class => "edit_venue_input" %></p>     <% end %>     <button class="submit_button" type="submit"> save changes</button>   <% end %> 

how can prevent new form being created on submit?

thanks appreciated!

edit

try out controller:

def new    @venue = venue.new    1.times { @venue.offers.build }  end   def create    @venue = venue.new params[:venue]    if @venue.save      flash[:notice] = 'venue added'      redirect_to edit_venue_path    else      render :action => :new    end  end   def edit    @venue = venue.find(params[:id])     1.times { @venue.offers.build }  end   def update    @venue = venue.find(params[:id])    if @venue.update_attributes(params[:venue])      flash[:notice] = 'venue updated successfully'     redirect_to edit_venue_path(@venue)    end   end