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### with no setup ### | |
# template language to shorten html | |
gem 'slim', '~> 3.0', '>= 3.0.7' | |
# manage translation | |
gem 'i18n', '~> 0.7.0' | |
# in group :development for better error pages | |
gem 'better_errors', '~> 2.1', '>= 2.1.1' |
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# sur tous les attributs | |
person.changes # => { "name" => ["bill", "bob"] } | |
# vérifier s'il y a eu un changement sur l'instance | |
person.changed? # => false | |
# récupérer la valeur changée | |
person.name_was # => "Uncle Bob" | |
Et plein d'autres => http://api.rubyonrails.org/classes/ActiveModel/Dirty.html |