如何停止使用fields_for重复的表单？ [英] How can I stop a form repeating using fields_for?

问题描述

我有一张表格，可以从场地编辑页面的场地增加优惠。

一旦提交表单，新创建的优惠将以部分显示，而不是表单清算，以允许输入另一个优惠，则会创建另一个表单。 p>

所以如果我输入5个优惠，我有6个添加新的优惠表单，其中5个添加了保存的详细信息。

我的代码如下：

场地模型

  class Venue< ActiveRecord :: Base 
 has_many：提供
 acceptance_nested_attributes_for：offer，：reject_if => lambda {| a |一[：标题] .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 
如果
 @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 
 @场地= Venue.new params [：场] 
如果@ 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。 offer.build} 
 end 
 
 def update 
 @venue = Venue.find（params [：id]）
 @ venue.attributes = params [：venue] 
如果@ 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]）。 
 flash [：notice] ='Venue deleted successfully'
 redirect_to venues_path 
 end 
 end 
  

场地edit.html.erb

 <％ = form_for @venue do | f | ％GT; 
< div class =edit_venue_details> 
 
< h2 class =venue_show_orange>优惠< / h2> 
 
<％if @ venue.offers.count.zero？ ％GT; 
< div class =no_reviews> 
还没有报价。 
< / div> 
<％else％> 
<％= render：partial => 'offer / offer'，：collection => @ venue.offers％> 
<％end％> 
< div class =clearall>< / div> 
< / div> 
 
< h2 class =edit_venue_sub_header>添加新的优惠< / h2> 
 
<％= f.fields_for：offer do | offer | ％GT; 
< p class =edit_venue> title：< br> 
<％= offer.text_field：title，：class => edit_venue_input％>< / p> 
<％end％> 
< button class =submit_buttontype =submit>保存更改< / button> 
<％end％> 
  

如何在提交时阻止创建新表单？

感谢任何帮助，非常感谢！

编辑

解决方案

：

  def new 
 @venue = Venue.new 
 1.times {@ venue.offers。 build} 
 end 
 
 def create 
 @venue = Venue.new params [：places] 
 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。 offer.build} 
 end 
 
 def update 
 @venue = Venue.find（params [：id]）
 if @ venue.update_attributes（params [：places ]）
 flash [：notice] ='成功更新'
 redirect_to edit_venue_path（@venue）
 end 
 end 
  

I have a table of venues where each can have many offers.

I have a form which adds offers to venues from the venues edit page.

Once I submit the form the newly created offer is shown as a partial but instead of the form clearing to allow another offer to be entered, another form is created.

So if I enter 5 offers I have 6 add new offer forms, 5 of them with the details entered into the saved ones.

My code looks like 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 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 %>

How can I prevent a new form being created on submit?

Thanks for any help its much appreciated!

edit

解决方案

Try this out for your 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      

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