iseitz

max = -1
vowels_hash.each do |vowel, frequency|
 if frequency > max
    max = frequency
 end
end

iseitz

animal = "cat"
class << animal
  def speak
    puts "miow"
  end
end

animal.speak

#self is assigned to the object and then the method is found for this class of the object via Singleton (unique methods table). One to the right, one up

iseitz

class PlayingCard

  attr_accessor :rank, :suite
  def initialize (rank, suite)
    @rank = rank
    @suite = suite
  end
  def face_card?
    ['K', 'Q', 'J'].include?(@rank)
  end

iseitz

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

iseitz

# On MAC OS High Sierra 10.13.6
# You must recompile Ruby with OpenSSL error:

$ rvm get head
$ rvm pkg remove
$ rvm requirements run
# (I just ran the `rvm requirements` and it installed the missing parts. 
# I then reinstalled the newest version of Ruby and  Rails, this worked for me.)
$ rvm reinstall 2.6.0

iseitz

$ rvm get stable

# if there is a problem with getting the latest version run:

$ rvm get head
$ rvm reload
$ rvm get stable

# if that does not work try:
$ \curl -sSL https://get.rvm.io | bash -s stable

iseitz

FIXME:
  WARNING: Nokogiri was built against LibXML version 2.7.3, but has dynamically loaded 2.7.8
                  or
  ERROR -: Incompatible library version: nokogiri.bundle requires version 11.0.0 or later, but libxml2.2.dylib provides version 10.0.0


gem uninstall nokogiri libxml-ruby
 
brew update
brew uninstall libxml2

iseitz

#uninstall nokogiri:
$ gem uninstall nokogiri 

#install nokogiri
$ gem install nokogiri

#restart terminal\if needed run gem pristine byebug --version 11.0.0
#solved!

iseitz

#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)

iseitz

Capybara Actions

# Anchor
click_link 'Save'

# Button
click_button 'awesome'

# Both above