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class Token < CouchRest::Model::Base
use_database :tokens
belongs_to :user
# timestamps! does not create setters and only sets updated_at
# if the object has changed and been saved. Instead of triggering
# that we rather use our own property we have control over:
property :last_seen_at, Time, accessible: false
validates :user_id, presence: true
design do
view :by_last_seen_at
end
def self.expires_after
APP_CONFIG[:auth] && APP_CONFIG[:auth][:token_expires_after]
end
def self.expired
return [] unless expires_after
by_last_seen_at.endkey(expires_after.minutes.ago)
end
def self.destroy_all_expired
self.expired.each do |token|
token.destroy
end
end
def authenticate
if expired?
destroy
return nil
else
touch
return user
end
end
# Tokens can be cleaned up in different ways.
# So let's make sure we don't crash if they disappeared
def destroy_with_rescue
destroy_without_rescue
rescue RestClient::ResourceNotFound
end
alias_method_chain :destroy, :rescue
def touch
self.last_seen_at = Time.now
save
end
def expired?
Token.expires_after and
last_seen_at < Token.expires_after.minutes.ago
end
def initialize(*args)
super
if new_record?
self.id = SecureRandom.urlsafe_base64(32).gsub(/^_*/, '')
self.last_seen_at = Time.now
end
end
end
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