在rails中创建预订

时间:2012-05-10 23:26:55

标签: ruby-on-rails ruby-on-rails-3 controller associations

我有一个应用程序,允许用户创建负载并对其进行出价。

我想要一种方法来浏览申请并预订出价然后处理信用卡,但我在设置预订模式时遇到问题。这是设置:

带有关联的模型:

class Reservation < ActiveRecord::Base
  belongs_to :load
  belongs_to :bid

  validates :load_id, presence: true
  validates :bid_id, presence: true
end

class Load < ActiveRecord::Base
  has_many :bids, :dependent => :delete_all
  has_one :reservation
end

class Bid < ActiveRecord::Base
  belongs_to :load
  has_one :reservation
end

预留迁移仅包括对两个表的引用。 在我的预订控制器中,我有以下代码:

class ReservationsController < ApplicationController

  before_filter :find_load
  before_filter :find_bid 

  def new
    @reservation = @load.build_reservation(params[:reservation])
  end

  def create
    @reservation = @load.build_reservation(params[:reservation].merge!(:bid_id => params[:bid_id])) 
    if @reservation.save
      flash[:notice] = "Reservation has been created successfully"
      redirect_to [@load, @bid]
    else
      render :new
    end
  end

  def find_load
    @load = Load.find(params[:load_id])
  end

  def find_bid
    @bid = Bid.find(params[:bid_id])
  end
end

在我的配置路由文件中,我有以下内容:

resources :loads do 
  resources :bids do 
    resources :reservations
  end
end

预订模型的迁移如下所示:

def change
  create_table :reservations do |t|
    t.references :load
    t.references :bid
    t.timestamps
  end
end

观看代码:

<h4>Reserve this bid: </h4>
  <dl>
    <dt>Carrier</dt>
    <dd><%= @bid.user.email %></dd>
    <dt>Bid Amount:</dt>
    <dd><%= @bid.bid_price %></dd>
 </dl>

<%= form_for [@load, @bid, @reservation], :html => {:class => 'payment_form'} do |f| %>
  <%= f.error_messages %>
<fieldset>
  <div class="field">
    <%= label_tag :card_number, "Credit Card Number" %>
    <%= text_field_tag :card_number, nil, name: nil %>
  </div>
  <div class="field">
    <%= label_tag :card_code, "Security Code on Back of Card (CVV)" %>
    <%= text_field_tag :card_code, nil, name: nil %>
  </div>
  <div class="field">
    <%= label_tag :card_month, "Card Expiration" %>
    <%= select_month nil, { add_month_numbers: true }, { name: nil, id: "card_month" } %>
    <%= select_year nil, { start_year: Date.today.year, end_year: Date.today.year+15 },
  { name: nil, id: "card_year" } %>
 </div>
</fieldset>
  

当我提交表单时,我收到以下验证错误:“出价不能为空”。看起来表单提交的出价为nil,我不确定为什么会这样做。我不相信第一行代码在我的控制器的创建操作中是正确的,并且我已经尝试了所有我能想到的排列并且我无法使其工作。

1 个答案:

答案 0 :(得分:1)

由于您的表单不包含您要保存的任何数据,因此您可以直接执行此操作:

@reservation = @load.build_reservation(:bid_id => @bid.id)

如果您添加以后要保存的预订字段,params[:reservation]将不会是nil,您将可以执行此操作:

@reservation = @load.build_reservation(params[:reservation].merge(:bid_id => @bid.id))

另一种方法是在您的表单中添加一个包含bid_id的隐藏字段,但由于您已在URL中使用该字段,因此这可能不是最好的方法。