如何使用fields_for停止重复的表单？

Question

我有一个场地表，每个场地都有许多优惠。

我有一个表格，可以从场地编辑页面向场馆添加优惠。

一旦我提交表单，新创建的报价将显示为部分报价，而不是表格清算以允许输入其他报价，则会创建另一个报表。

因此，如果我输入5个优惠，我会添加6个新优惠表格，其中5个会在保存的表格中输入详细信息。

我的代码如下所示：

场地模型

class Venue < ActiveRecord::Base
  has_many :offers
  accepts_nested_attributes_for :offers, :reject_if => lambda { |a| a[:title].blank? }
end

编辑 - 场地控制器

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

场地edit.html.erb

  <%= form_for @venue do |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 a new offer</h2>

    <%= f.fields_for :offers do |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 %>

如何阻止在提交时创建新表单？

感谢任何帮助，非常感谢！

修改

Answer 1

为您的控制器试试这个：

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