maicher

require 'cli_spinnable'

module Cli
  extend CliSpinnable
end

puts 'HAPPY RUN (should succeed):'
Cli.with_spinner do |cli|
  cli.print 'Downloading something'
  sleep 1

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CliSpinnable.with_spinner do |cli|
  cli.print('Text') #=> / Text
  cli.tick          #=> ✓ Text
  cli.fail          #=> × Text
  1 / 0             #=> × Text # exceptions raised within the block also triggers printing fail mark
end

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class Foo
  include CliSpinnable
  
  def call
    with_spinner do |cli|
      #...
    end
  end
end

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# Step 1. Obtain token
curl -X POST \
-F "client_id=b6394b15282889398719c67983594d20" \
-F "client_secret=4aee41059af4d350a6ead3a285f0c438de146857d4134b6e63d5b1291971b12f" \
-F "grant_type=client_credentials" \
-F "scope=write_partner_users" \
'https://berlin.staging.wimdu.com/api/v3/oauth/token'

# Step 2. Create user.
# fill out <token> (obtained in Step.1)

maicher

module Container
  # Initialized once (kind'a singleton)
  def self.a
    @a ||= Object.new
  end
  
  # Initialized every time.
  def self.b
    Object.new
  end

maicher

def print_translations(hash, phrase_key, i = 0)
  hash.each do |k, v|
    if v.is_a?(Hash)
      i.times { print '  ' }
      print "#{k.to_s.camelize(:lower)}: {\n";
      print_translations(v, "#{phrase_key}.#{k}", i + 1)
      i.times { print '  ' } 
      print "},\n"
    else i.times { print '  ' }
      print "#{k.to_s.camelize(:lower)}: t('#{phrase_key}.#{k}'),\n"

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# Managing own fork

### Configure upstream
git remote -v
git remote add upstream git@github.com:wimdu/wimdu.git

### Syncing to upstream
git checkout master
git fetch upstream master
git reset --hard upstream/master

maicher

Caching in OfferProvider

• Why? - To improve performance (that is not call db an each provider request).
• Where? - At the point of fething data from OfferProvider component (repositories).
• How? - By using Rails.cache#fetch

Introduction

Why we don't like caching?

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class A
  def call
    # do something
  end
end

class B
  def call(argument)
    # do something different
  end

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class CreateUser
  class Error < StandardError; end
  
  # ...
end

# contoller
begin
  user = CreateUser.new(params).call
  p "User #{user.username} created succesfully"