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joemsak/short_url.rb

Created October 4, 2014 19:16
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short_url.rb
class ShortUrl
def self.create(url)
url.shortened_hash = first_five_of_sha256(url)
url.save
end
def self.for(url)
ENV['HOSTNAME'] + url.shortened_hash
end
private
def self.first_five_of_sha256(url)
digest = Digest::SHA256.hexdigest(url.long)
digest[0..4]
end
end
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