Module: Acts::Permalink::InstanceMethods

Defined in:
lib/acts_as_permalink.rb

Instance Method Summary collapse

Instance Method Details



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# File 'lib/acts_as_permalink.rb', line 37

def build_permalink
  config = self.class.base_class.acts_as_permalink_config

  text = self.public_send(config.from)
  text = [self.class.base_class.to_s, rand(10000)].join(config.separator) if text.blank?
  text = text.to_permalink(separator: config.separator, max_length: config.max_length)

  # scope it if one is present
  conditions = {}
  conditions[config.scope] = self.public_send(config.scope) if config.scope.present?

  # Attempt to find the object by the permalink, and if so there is a collision and we need to de-collision it
  if self.class.base_class.where(conditions.merge(config.to => text)).any?
    candidate_text = nil

    # This will fail if you have a million records with the same name
    (1..999999).each do |num|
      suffix = "#{ config.separator }#{ num }"
      candidate_text = [text[0...(config.max_length - suffix.length)], suffix].join("")
      break unless self.class.base_class.where(conditions.merge(config.to => candidate_text)).any?
    end

    text = candidate_text
  end

  text
end

#to_param ⇒ Object 



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# File 'lib/acts_as_permalink.rb', line 28

def to_param
  self.public_send(self.class.base_class.acts_as_permalink_config.to)
end

#update_permalink ⇒ Object 



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# File 'lib/acts_as_permalink.rb', line 32

def update_permalink
  self.public_send("#{ self.class.base_class.acts_as_permalink_config.to }=", build_permalink)
  true
end