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# File 'lib/pretty_id/core.rb', line 8
def has_pretty_id(options = {})
default_options = {
column: :pretty_id,
method: :pretty,
uniq: true
}
options = default_options.merge(options)
case options[:method]
when :pretty
options[:length] ||= 8
options[:generate_proc] = -> {
chars = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a
Array.new(options[:length]) { chars[rand(chars.length)] }.join
}
when :urlsafe_base64
options[:length] ||= 21
options[:generate_proc] = -> {
SecureRandom.urlsafe_base64(options[:length] / 1.333)
}
else
fail 'Unknown :method passed to has_pretty_id'
end
define_method(:"generate_#{options[:column]}") do
new_pretty_id = loop do
random_pretty_id = options[:generate_proc].call
break random_pretty_id if !options[:uniq]
exists_hash = {}
exists_hash[options[:column]] = random_pretty_id
break random_pretty_id unless self.class.exists?(exists_hash)
end
self.send "#{options[:column]}=", new_pretty_id
end
define_method(:"regenerate_#{options[:column]}") do
self.send("generate_#{options[:column]}")
end
define_method(:"regenerate_#{options[:column]}!") do
self.send("generate_#{options[:column]}")
self.save
end
before_create :"generate_#{options[:column]}"
end
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