Rails 3 Server Startup problem with fastercsv - ruby-on-rails

Question

I have a rails 2.3.5 app getting upgraded to Rails 3. I did every thing I am required to do for upgrading and when I start the rails server using
rails server
it gives me this
Please switch to Ruby 1.9's standard CSV library. It's FasterCSV plus
support for Ruby 1.9's m17n encoding engine.
I am using ruby-1.9.2-p0 and have fastercsv (1.5.3) gem installed. with the help of puts statements, i was able to track down where the error occurred. i found that the execution stops at this line
Bundler.require(:default, Rails.env) if defined?(Bundler)
in application.rb file. I tried many things but none worked .. please help..

Answer 1

Remove fasterCSV from your Gemfile in the application. Bundler is trying to require FasterCSV because you have it specified in the Gemfile.

Answer 2

with 1.9 you no longer need/can use the fastercsv gem, since it's bundled in the std lib.
Now you just need to do:
require 'csv'
CSV.open("temp.csv", "w") do |csv|
csv << ["line1row1", "line1row2"]
csv << ["line2row1", "line2row2"]
# ...
end

Answer 3

This is the solution i found:
require 'fastercsv'
require 'csv'
class ImportFileToAssetsWithFasterCsv < ActiveRecord::Migration
def self.up
if CSV.const_defined? :Reader
csv = FasterCSV
else
csv = CSV
end
file = 'db/staticfiles/DB-good-rightnames-forimport.csv'
csv.foreach(file) do |row|
Asset.create!(:country => row[0], :city => row[1], :latlong => row[2], :XX => row[3], :DEC => row[4], :point_name => row[5], :system_type => row[6], :system_brand => row[7], :function => row[8], :operator_name => row[9], :operator_brand => row[10], :parent_company => row[11], :app => "WWW", :language => "en", :source => "XXX", :Z_name => "International", :pref_format => "")
end
end
def self.down
IspcAsset.destroy_all()
end
end

Answer 4

Look here too http://www.wherethebitsroam.com/blogs/jeffw/fastercsv-csv-ruby-18-19-and-rails-30

Answer 5

If used FasterCsv in loop or in the code just change it with Csv and works for me.
Remove gem 'fastercsv' from gem file.
Just write your code in controller, no need add other code in somewhere in config.
This is the example of wrong code.
class HomeController < ApplicationController
require 'fastercsv'
def download_csv
#invitation = Invitation.find(params[:id])
#activities = Version.where("created_at >= ?", #invitation.created_at)
if params[:export]
csv_string = FasterCSV.generate do |csv|
# header row
csv << ["Date", "Event", "Details"]
#activities.each do |act|
csv << [act.created_at.strftime("%d-%m-%Y"), act.event, act.item_id]
end
end
timestamp = Time.now.strftime('%Y-%m-%d_%H:%M:%S')
send_data csv_string,
:type => 'text/csv; charset=iso-8859-1; header=present',
:disposition => "attachment; filename=goal_history_#{timestamp}.csv"
end
end
and just corrected with changing word FasterCsv to Csv and it works. like below
class HomeController < ApplicationController
require 'csv'
def download_csv
#invitation = Invitation.find(params[:id])
#activities = Version.where("created_at >= ?", #invitation.created_at)
if params[:export]
csv_string = CSV.generate do |csv|
# header row
csv << ["Date", "Event", "Details"]
#activities.each do |act|
csv << [act.created_at.strftime("%d-%m-%Y"), act.event, act.item_id]
end
end
timestamp = Time.now.strftime('%Y-%m-%d_%H:%M:%S')
send_data csv_string,
:type => 'text/csv; charset=iso-8859-1; header=present',
:disposition => "attachment; filename=goal_history_#{timestamp}.csv"
end
end