ReservationsController#checkout 中 nil:NilClass NoMethodError 的未定义方法“总计”

Question

我目前无法弄清楚如何从一个控制器获取参数以添加到下一个控制器。我尝试了 render 和 redirect_to，但我仍然无法正常工作！！

这是我的控制器和视图 - 视图中的表单获取我的 checkout controller 的操作 -我想在结帐和创建控制器中使用相同的 reservation.id，因此我可以在结帐控制器中调用 reservation.total。

我怎样才能在创建控制器上获得总数以希望在结账控制器上共享？

错误日志：

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

预订管理员：

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'

Answer 1

我建议您将结帐方法作为成员方法，即在 url 中传递预订 ID。

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

通过执行此操作，您将能够找到类似的预订。

@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 %>

ReservationsController#checkout 中 nil:NilClass NoMethodError 的未定义方法“总计”

undefined method `total' for nil:NilClass NoMethodError in ReservationsController#checkout

html

javascript

ruby

ruby-on-rails

braintree