未定义的方法'总'为零：NilClass NoMethodError在ReservationsController＃结帐

我目前卡住无法弄清楚如何从一个控制器获得参数添加到下一个控制器。艾夫试过render和redirect_to，我仍然无法让这个工作！未定义的方法'总'为零：NilClass NoMethodError在ReservationsController＃结帐

我的继承人控制器和视图 - 形式观点得到我checkout controller -I要使用相同的reservation.id两个结账，并创建控制器的动作，这样我就可以在结账控制器调用reservation.total。

如何才能获得创建控制器上的总数，希望结束并共享结帐控制器？

错误日志：

NoMethodError (undefined method `total' for nil:NilClass): 
    app/controllers/reservations_controller.rb:45:in `checkout'

保留控制器：

def checkout 




nonce = params[:payment_method_nonce] 
result = Braintree::Transaction.sale(
    :amount => @reservation.total, 
    :payment_method_nonce => nonce, 
    :options => { 
    :submit_for_settlement => true 
    } 
) 
if result.success? 
    puts "success!: #{result.transaction.id}" 
elsif result.transaction 
    puts "Error processing transaction:" 
    puts "code: #{result.transaction.processor_response_code}" 
    puts "text: #{result.transaction.processor_response_text}" 
else 
    p result.errors 
end 


end 



def create 

#!/usr/bin/env ruby 


    reviser = Reviser.find(params[:reviser_id]) 
     @reservation = current_user.reservations.create(reservation_params) 

     if @reservation.total > 0 

      @token = Braintree::ClientToken.generate 


     elsif @reservation.total == 0 
      @reservation.update_attributes status: true 
      redirect_to @reservation.reviser.user, alert: "Writing Request Success" 


     else 
      redirect_to @reservation.reviser, alert: "Oops, something went wrong..." 
     end 




    end

创建HTML：

<p>create</p> 
 

 

 
<form id="checkout" method="post" action="/checkout"> 
 
    <div id="payment-form"></div> 
 
    <input type="submit" value="Pay"> 
 
</form> 
 

 
<script src="https://js.braintreegateway.com/js/braintree-2.26.0.min.js"></script> 
 
<script> 
 
// We generated a client token for you so you can test out this code 
 
// immediately. In a production-ready integration, you will need to 
 
// generate a client token on your server (see section below). 
 
// var clientToken = "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"; 
 

 

 

 
var clientToken = "<%= @token %>"; 
 

 
braintree.setup(clientToken, "dropin", { 
 
    container: "payment-form" 
 
}); 
 
</script>

post 'checkout', to: 'reservations#checkout' 
get 'checkout', to: 'reservations#checkout'

来源

2016-07-16 Michael Lombardo

不能只是你找到PARAMS预订：ID？在结帐控制器？ –

你也在@reviser在def创建 –

@reservation = Reservation.find（params [：id]）给我一个不同的错误：无法找到保留与'id'= –

我建议您将结帐方法作为成员方法，即在URL中传递预留的ID。

post 'checkout/:id', to: 'reservations#checkout', :as => 'reservation_checkout'

通过这样做，您将能够找到保留喜欢。

@reservation = Reservation.find(params[:id]) #so you will not get the error undefined method `total' for nil:NilClass

我想知道你为什么不使用html.erb

<%= form_tag reservation_checkout_path(@reservation) %> 
    #your fields 
<% end %>

来源

2016-07-16 07:16:55 power

我试过表单标签，它似乎通过'后'保留/结帐'，以''保留＃结帐'，但该ID仍然不会解决。我尝试了其他人，他们也没有工作。我得到无法找到保留与'身份证'= ......当我使用结帐/：身份证...当我做了reservation_checkout_path一个URL结帐后的ID。像这样：http：// localhost：3000/reservations/checkout.338 –

我想你首先需要通过rails guide教程http://guides.rubyonrails.org/getting_started.html#creating-a-新的铁路项目，这将明确清除有关路由和所有的概念。希望有所帮助！ – power

未定义的方法'总'为零：NilClass NoMethodError在ReservationsController＃结帐

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