CODEWITHSUNDEEP
ruby-on-railsrestcontrollerstate
softcode
softcode

Reputation: 4648

Passing query string from #new to #create

I am trying to update my inventory after a Stripe transaction

routes:

  get 'product/:size' => 'charges#new'
  resources :charges

ex: localhost:3000/product/32

controller

  def new
    @product = Product.find_by(size: params[:size])
  end

  def create
    @amount = 500
    @product = Product.find_by(size: params[:size])
    customer = Stripe::Customer.create(
        :email => '[email protected]',
        :card  => params[:stripeToken]
    )

    charge = Stripe::Charge.create(
        :customer    => customer.id,
        :amount      => @amount,
        :description => 'Rails Stripe customer',
        :currency    => 'usd'
    )


    @product.update_attribute(:status, "sold")

  rescue Stripe::CardError => e
    flash[:error] = e.message
    redirect_to charges_path


  end
end

This returns

undefined method `update_attribute' for nil:NilClass

After testing through trial and error, I believe that the problem is that Rails is not finding [:size] in params, thus the instance variable is not being instantiated.

What must I do?

Upvotes: 0

Views: 74

Answers (1)

infused
infused

Reputation: 24337

Make sure to include the :size param into your form so that it is passed along to the create action during the POST. You can include it in your form using hidden_field_tag:

<%= form ... do %>
  <%= hidden_field_tag :size, params[:size] %>

  Other form inputs....
<% end %>

Upvotes: 1

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