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## setting_rails_attributes.md

      
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                epitron
                / setting_rails_attributes.md
            
            
              Last active
              March 25, 2016 22:41
                — forked from havenwood/setting_rails_attributes.md
            
              
                Cheat sheet for setting Rails attributes (from http://www.davidverhasselt.com/set-attributes-in-activerecord/)
              
          
Method
Uses Default Accessor
Validations
Callbacks
Touches updated_at
Readonly check


update
✅
✅
✅
✅
✅


update_attributes
✅

✅
✅
✅


update_columns


✅


User::update
✅
✅
✅
✅
✅


User::update_all


## export_seeds.rake
namespace :db do
  desc "Convert your database into seeds!"
  task :export_seeds => :environment do
    Rails.application.eager_load!
    models = ObjectSpace.each_object(Class).select { |c| c < ActiveRecord::Base }

    ignored_keys = %w[created_at updated_at id]

    models.each do |model|
      puts "### #{model}s ######################################"

## problem.txt
QUESTION 6: Write a function multi_gsub that performs multiple, simultaneous
search-and-replace operations on a string.

Example:

"Lorem Ipsum #9191".multi_gsub([[/[a-z]/i, '#'], [/#/, 'P']])
=> "##### ##### P9191"

## fail gems.rb
config.gem "rspec", :lib => false
config.gem "rspec-rails", :lib => false
config.gem "cucumber", :lib => false
config.gem "thoughtbot-factory_girl", :lib => false, :source => "http://gems.github.com"
config.gem "faker", :lib => false
config.gem "carlosbrando-remarkable", :lib => "remarkable", :source => "http://gems.github.com"
config.gem "haml"
config.gem "webrat"
config.gem "htmlentities"
config.gem "json"

## frozen_stuff.rb
require 'rubygems'
# Only load paths from the folder 'gems' under the current
# dir - e.g. ./gems/
# To freeze use gem install <name> -i gems
Gem.clear_paths

File dsl
  Gem.path.unshift (PWD / 'gems').absolute_path
end
Method	Uses Default Accessor	Validations	Callbacks	Touches updated_at	Readonly check
update	✅	✅	✅	✅	✅
update_attributes	✅		✅	✅	✅
update_columns					✅
User::update	✅	✅	✅	✅	✅
User::update_all
	namespace :db do
	desc "Convert your database into seeds!"
	task :export_seeds => :environment do
	Rails.application.eager_load!
	models = ObjectSpace.each_object(Class).select { \|c\| c < ActiveRecord::Base }

	ignored_keys = %w[created_at updated_at id]

	models.each do \|model\|
	puts "### #{model}s ######################################"
	QUESTION 6: Write a function multi_gsub that performs multiple, simultaneous
	search-and-replace operations on a string.

	Example:

	"Lorem Ipsum #9191".multi_gsub([[/[a-z]/i, '#'], [/#/, 'P']])
	=> "##### ##### P9191"
	config.gem "rspec", :lib => false
	config.gem "rspec-rails", :lib => false
	config.gem "cucumber", :lib => false
	config.gem "thoughtbot-factory_girl", :lib => false, :source => "http://gems.github.com"
	config.gem "faker", :lib => false
	config.gem "carlosbrando-remarkable", :lib => "remarkable", :source => "http://gems.github.com"
	config.gem "haml"
	config.gem "webrat"
	config.gem "htmlentities"
	config.gem "json"
	require 'rubygems'
	# Only load paths from the folder 'gems' under the current
	# dir - e.g. ./gems/
	# To freeze use gem install <name> -i gems
	Gem.clear_paths

	File dsl
	Gem.path.unshift (PWD / 'gems').absolute_path
	end