Rails Application Development Cook Book

Factory Girl Configs

If repeating "FactoryGirl" is too verbose for you, you can mix the syntax methods in:

# rspec
RSpec.configure do |config|
  config.include FactoryGirl::Syntax::Methods
end

# Test::Unit
class Test::Unit::TestCase
  include FactoryGirl::Syntax::Methods
end

# Cucumber
World(FactoryGirl::Syntax::Methods)

Fish shell with RVM

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Fish shell with Git Branch using Fish Nuggets (Reference: https://github.com/nirvdrum/fish_config)
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1) brew install fish
2) cd ~/.config/fish
3) git init .
4) git add .
5) git commit -am "Defaults"
6) git remote add github git://github.com/zmalltalker/fish-nuggets.git
7) git pull github master

Alternatively go to http://ridiculousfish.com/shell/beta.html

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Uninstalling gem that exist but kept saying gem is not installed:
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1) gem list -d 'name of gem'
2) sudo gem uninstall 'name of gem' -i 'the path noted above'

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Patch for RVM when using Fish Shell
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1) Download the files into ~/.config/fish/functions
- http://noosfero.org/Development/DepsWithRVMAndGems
- https://github.com/eventualbuddha/fish-nuggets/commit/186775c746dd86cd94900269ee89e0c75e1db9d8

Heroku Asset:Precompile Error Fix

Reference: http://www.simonecarletti.com/blog/2012/02/heroku-and-rails-3-2-assetprecompile-error/

PROBLEM:
----------------------------------------------------------------------------------------------------------------------------
Your bundle is complete! It was installed into ./vendor/bundle
       Cleaning up the bundler cache.
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       rake aborted!
       could not connect to server: Connection refused
       Is the server running on host "127.0.0.1" and accepting
       TCP/IP connections on port 5432?

       Tasks: TOP => environment
       (See full trace by running task with --trace)
       Precompiling assets failed, enabling runtime asset compilation
       Injecting rails31_enable_runtime_asset_compilation
       Please see this article for troubleshooting help:

http://devcenter.heroku.com/articles/rails31_heroku_cedar#troubleshooting

SOLUTION: Add the following into your application.rb
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config.assets.initialize_on_precompile = false

Heroku AssetPrecompile Error Fix

Reference: http://www.simonecarletti.com/blog/2012/02/heroku-and-rails-3-2-assetprecompile-error/

PROBLEM:
----------------------------------------------------------------------------------------------------------------------------
Your bundle is complete! It was installed into ./vendor/bundle
       Cleaning up the bundler cache.
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       rake aborted!
       could not connect to server: Connection refused
       Is the server running on host "127.0.0.1" and accepting
       TCP/IP connections on port 5432?

       Tasks: TOP => environment
       (See full trace by running task with --trace)
       Precompiling assets failed, enabling runtime asset compilation
       Injecting rails31_enable_runtime_asset_compilation
       Please see this article for troubleshooting help:

http://devcenter.heroku.com/articles/rails31_heroku_cedar#troubleshooting

SOLUTION: Add the following into your application.rb
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config.assets.initialize_on_precompile = false

Rspec Controller Examples

require 'spec_helper'

describe Community do
  let(:community) { create(:community, :end_on => nil) }

  describe '.newsletter!' do
    let!(:community_2) { create(:community) }
    let!(:expired_community) { create(:community, :end_on => 10.days.ago) }
    let!(:user_2) { create(:user, :community => community_2, :newsletter_me => true)}
    subject { Community.newsletter! }
    before { user_2.send(:confirm_and_verify!) }

    it 'should send newsletters' do
      expect { subject }.to change { ActionMailer::Base.deliveries.count }.by(1)
    end
  end

  describe '#unit_list' do
    subject { community.unit_list = "1\n2\n3\r\n"}

    context 'when there are no duplicates' do
      it 'should create units' do
        expect { subject }.to change { community.units.count }.by(3)
      end
    end

    context 'when there are duplicates' do
      before { community.units.create(:name => '3') }
      it 'should create units' do
        expect { subject }.to change { community.units.count }.by(2)
      end
    end
  end

  describe '#storage_exceeded?' do
    subject { community }
    before { create(:attachment, :community => community) }

    context 'when not exceed' do
      before { community.update_attribute(:storage_limit_in_bytes, 1000.megabytes)}
      it { should_not be_storage_exceeded }
    end
    context 'when exceed' do
      before { community.update_attribute(:storage_limit_in_bytes, 1)}
      it { should be_storage_exceeded }
    end
  end

  describe '#expired?' do
    subject { community.reload }

    context 'when there are no subscriptions' do
      it { should be_expired }
    end

    context 'when subscriptions are expired' do
      before { create(:subscription, :end_on => 1.year.ago, :community => community)}
      it { should be_expired }
    end

    context 'when there is one unexpired subscription' do
      before { create(:subscription, :start_on => Date.today, :months => 12, :community => community) }
      it { should_not be_expired }
    end
  end

  describe '#host' do
    subject { community }

    context 'when there is custom domain' do
      before { community.update_attributes({:subdomain => 'nadayu', :custom_domain => 'nadayu.com'}) }
      its(:host) { should == 'nadayu.com' }
    end

    context 'when there is a subdomain' do
      before { community.update_attributes({:subdomain => 'nadayu', :custom_domain => nil}) }
      its(:host) { should == 'nadayu.highrisepro.com' }
    end
  end

  describe 'sms credit reset' do
    subject { community.reload }
    before do
      community.update_attributes(:sms_credits => 1, :default_sms_credits => 1001)
    end

    describe '.reset_sms_credits!' do
      before { Community.reset_sms_credits! }

      its(:sms_credits) { should == 1001 }
    end

    describe '#reset_sms_credits!' do
      before { community.reset_sms_credits! }

      its(:sms_credits) { should == 1001 }
    end
  end

  describe '#news_feed' do
    it 'should show bulletins & forum topics' do
      subject { community }
      bulletin = create(:bulletin, :community => community)
      forum_topic = create(:forum_topic, :community => community)
      community.news_feed.should eq([bulletin,forum_topic])
    end
  end

end

***************************************************************************************************************************
File Upload Tests using fixture_file_upload
***************************************************************************************************************************

context 'when name is not set' do
  let(:attributes) { {:name => nil, :file => fixture_file_upload('/auto_file_name.png', 'image/png')} }
  
  # fixture_file_upload is a shortcut for Rack::Test::UploadedFile.new(ActionController::TestCase.fixture_path + path, type)
  # /auto_file_name.png located in "spec/fixtures/auto_file_name.png"

  it 'should auto set the name' do
     expect { subject }.to change { Attachment.find_all_by_name('auto_file_name').count }.by(1)
  end
end

# Read about factories at https://github.com/thoughtbot/factory_girl
include ActionDispatch::TestProcess
FactoryGirl.define do
  factory :lookup do
    name "Collateral_Map"
    remarks "Some sort of remarks"
    lookup {fixture_file_upload(Rails.root.join('spec', 'fixtures/files', 'collateral_map.xls'), 'application/vnd.ms-excel')}
    lookup_cache ""
    user_id 1
  end
end


Reference: 
1) http://apidock.com/rails/ActionDispatch/TestProcess/fixture_file_upload
2) http://edgar.tumblr.com/post/2841931378/how-i-test-a-file-upload-in-rails-3
3) http://stackoverflow.com/questions/5990835/factory-with-carrierwave-upload-field

Sample Foreman Procfile

# http://blog.railsonfire.com/2012/05/06/Unicorn-on-Heroku.html
# http://michaelvanrooijen.com/articles/2011/06/01-more-concurrency-on-a-single-heroku-dyno-with-the-new-celadon-cedar-stack/

web: bundle exec unicorn_rails -p $PORT -c ./config/unicorn.rb
clock: bundle exec clockwork clock.rb
spin: bundle exec spin serve
smtp: bundle exec mailcatcher -f
worker: bundle exec rake jobs:work

Sample Unicorn.rb

# unicorn_rails -c /data/github/current/config/unicorn.rb -E production -D

# RAILS_ENV = ENV['RAILS_ENV'] || 'production'

if ENV['RAILS_ENV'] == 'production'
  worker_processes 3
else
  worker_processes 2
end

# Load rails+github.git into the master before forking workers
# for super-fast worker spawn times
preload_app true

# Restart any workers that haven't responded in 30 seconds
timeout 30

# Listen on a Unix data socket
# listen '/data/github/current/tmp/sockets/unicorn.sock', :backlog => 2048


##
# REE

# http://www.rubyenterpriseedition.com/faq.html#adapt_apps_for_cow
if GC.respond_to?(:copy_on_write_friendly=)
  GC.copy_on_write_friendly = true
end


before_fork do |server, worker|
  ##
  # When sent a USR2, Unicorn will suffix its pidfile with .oldbin and
  # immediately start loading up a new version of itself (loaded with a new
  # version of our app). When this new Unicorn is completely loaded
  # it will begin spawning workers. The first worker spawned will check to
  # see if an .oldbin pidfile exists. If so, this means we've just booted up
  # a new Unicorn and need to tell the old one that it can now die. To do so
  # we send it a QUIT.
  #
  # Using this method we get 0 downtime deploys.

  old_pid = Rails.root + '/tmp/pids/unicorn.pid.oldbin'
  if File.exists?(old_pid) && server.pid != old_pid
    begin
      Process.kill("QUIT", File.read(old_pid).to_i)
    rescue Errno::ENOENT, Errno::ESRCH
      # someone else did our job for us
    end
  end
end


after_fork do |server, worker|
  ##
  # Unicorn master loads the app then forks off workers - because of the way
  # Unix forking works, we need to make sure we aren't using any of the parent's
  # sockets, e.g. db connection

  ActiveRecord::Base.establish_connection
  # CHIMNEY.client.connect_to_server
  # Redis and Memcached would go here but their connections are established
  # on demand, so the master never opens a socket
end

Standard Postgres database.yml

development:
  adapter: postgresql
  database: highrisepro_development
  pool: 5
  username: adrian
  timeout: 5000

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: postgresql
  database: highrisepro_test
  pool: 5
  username: adrian
  timeout: 5000

production:
  adapter: postgresql
  database: highrisepro_production
  pool: 5
  username: adrian
  timeout: 5000

Sublime Text Cheats Snippets

1) Multiple line with single line split = CMD + SHIFT + L
2) Comment Lines = CMD + /
3) Delete Line = CMD + L + Backspace OR CTRL + K
4) New Fresh Line Below = CMD + RETURN
5) New Fresh Line Before = CMD + SHIFT + RETURN
6) Run Test in Sublime = CMD + SHIFT + T
7) Run Single Test in Sublime = CMD + SHIFT + R

References:
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https://github.com/maltize/sublime-text-2-ruby-tests

Sublime Text Cheats & Snippets

1) Multiple line with single line split = CMD + SHIFT + L
2) Comment Lines = CMD + /
3) Delete Line = CMD + L + Backspace OR CTRL + K
4) New Fresh Line Below = CMD + RETURN
5) New Fresh Line Before = CMD + SHIFT + RETURN
6) Run Test in Sublime = CMD + SHIFT + T
7) Run Single Test in Sublime = CMD + SHIFT + R

References:
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https://github.com/maltize/sublime-text-2-ruby-tests