rake-task

I have a string with extra whitespace: First,Last,Email ,Mobile Phone ,Company,Title ,Street,City,State,Zip,Country, Birthday,Gender ,Contact Type I want to parse this line and remove the whitespaces. My code looks like: namespace :db do task :populate_contacts_csv => :environment do require 'csv' csv_text = File.read('file_upload_example.csv') csv = CSV.parse(csv_text, :headers => true) csv.each do |row| puts "First Name: #{row['First']} \nLast Name: #{row['Last']} \nEmail: #{row['Email']}" end end end You can strip your hash first: csv.each do |unstriped_row| row = {} unstriped_row.each{|k,

I have seen examples where a task has parameters and a dependency task like: task :name, [:first_name, :last_name] => [:pre_name] do |t, args| args.with_defaults(:first_name => "John", :last_name => "Dough") puts "First name is #{args.first_name}" puts "Last name is #{args.last_name}" end How would you pass parameters to the name task if it was a task dependency like: task :sendLetter => :name #do something end xtoddx Args are passed down through the call stack. You just need to make sure your top-level task captures all the arguments all of the dependencies require. In your case you'll want

I am interested in running a very long running rake task, one that would take hours to complete and I am interested in learning about best practices for dealing with this problem. Possible solutions I have found: Set up a cron job delayed_job resque cron seems like a simple solution to set up, but is it ideal for a very long task? What do you use and what are the advantages/disadvantages of your solution? Personally I love Resque, you can use the resque-scheduler gem for dealing with long running or periodic tasks. If you don't have to run your task very often, you can demonize the the rake

I'm importing an existing rails project that I was working on into my new arch linux system, I already installed all gems and postgresql correctly, but I having some issues when runing: rake db:create I get the following error PGError: ERROR: new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII) HINT: Use the same encoding as in the template database, or use template0 as template. : CREATE DATABASE "System_test" ENCODING = 'unicode' I created manually the database with the correct encoding and the migrations worked well, but I can run the rake db:test:clone

I have rails 3.1, I am trying to populate data with seeds.rb I have a model Country which is migrated into a countries table But it seems that rails can't see Country model from seeds.rb I get this error: rake aborted! uninitialized constant Object::Country Tasks: TOP => db:seed my seeds.rb file looks like this: # encoding: UTF-8 Country.delete_all my Country model: class Country < ActiveRecord::Base has_many :students has_many :instructors end any idea please ? EDIT I am in development environment, with config.threadsafe! 来源： https://stackoverflow.com/questions/8628830/rake-aborted