Rails redirecing with session variables - ruby-on-rails

Question

I have a landing page controller that looks like this ;
class LandingController < ApplicationController
def index
#user = current_user
#name = #user.name.titleize
#balance = "#{#user.currency} #{#user.balance}"
#last_login = #user.last_sign_in_at
api_key = ApiKey.find_by_user_id( #user.id)
#access_token = api_key.access_token
end
def check_mail
end
end
However, in a controller method shown below, when i make the redirect i get an error.
Controller method;
def success
transaction = Transaction.find_by_token(params[:token])
transaction.payer_id = params[:payer_id]
transaction.save
#current_user = user = User.find(transaction.user_id)
username = "xxxxxxxxxxxxxxxxxxxx"
password = "7xxxxxxxxxxxxxxx"
signature = "xxxxxxxxxxxxxxx"
version = 98
#amount = Currency.convert(user.currency, "USD", transaction.amount.to_f).to_f.round(2)
url = "https://api-3t.paypal.com/nvp?USER=#{username}&PWD=#{password}&SIGNATURE=#{signature}&VERSION=#{version}&METHOD=DoExpressCheckoutPayment&TOKEN=#{transaction.token}&PAYERID=#{transaction.payer_id}&PAYMENTREQUEST_0_PAYMENTACTION=SALE&PAYMENTREQUEST_0_AMT=#{#amount}&PAYMENTREQUEST_0_CURRENCYCODE=USD"
uri = URI.parse(url)
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE
request = Net::HTTP::Get.new(uri.request_uri)
res = http.request(request)
response = res.body
transaction.save
user.balance = (user.balance+transaction.amount)
user.save()
transaction.status ="Completed"
transaction.save()
flash[:notice] = 'Payment Transaction Completed. Thank you for using skyline SMS'
redirect_to user_home_path(#current_user)
end
i get the error below;
undefined method `name' for nil:NilClass
with the trace;
app/controllers/landing_controller.rb:4:in `index'
How can i go about it?

Answer 1

The problem is that the #user variable in LandingController don't have a value (it's nil), that's why you're getting undefined method name for nil:class, try this: put the redirect like this
#stuff...
redirect_to user_home_path(:current_user => #current_user)
end
and in LandingController index put this
def index
#user = params[:current_user]
#name = #user.name.titleize
#...rest of the method...