module FriendlySlug::ActiveRecord::Base

Public Instance Methods

_create_slug() click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 59
def _create_slug
  fresh_slug = self.class._friendly_attribute_list.map do |attribute|
    _lookup_key(self.class.send("_friendly_#{attribute.to_s}_key")).to_s
  end.
    join("-").
    gsub(/<\/?[^>]*>|[^\.\w\s-]/, '').
    strip.downcase.gsub(/\s{1,}|\./, '-').
    gsub(/-{2,}/, "-")

  fresh_slug[-1] == "-" ? fresh_slug[0...-1] : fresh_slug
end
_friendly_attribute_list() click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 9
def _friendly_attribute_list
  @_friendly_attribute_list
end
_friendly_use_key() click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 19
def _friendly_use_key
  @_friendly_use_key
end
_lookup_key(k) click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 44
def _lookup_key(k)
  k.is_a?(Symbol)? self.send(k) : k.to_s 
end
_slug_exists?(current_slug) click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 75
def _slug_exists?(current_slug)
  self.class.where("slug = ? AND id != ?", current_slug, self.id.nil? ? "NULL" : self.id).any? 
end
_unique_attribute_changed?() click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 71
def _unique_attribute_changed?
  self.send("#{self.class.send("_friendly_attribute_list").first.to_s}_changed?".to_sym)
end
_update_slug() click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 48
def _update_slug
  if self.class._friendly_use_key == :database
    current_slug = self.to_param
    unless _slug_exists?(current_slug)
      self.slug = current_slug
    else
      self.slug = [current_slug.to_s, SecureRandom.hex(6)].join("-")
    end
  end
end
build_friendly_slug(*attribute_list, use: nil) click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 4
def build_friendly_slug(*attribute_list, use: nil)
  instance_variable_set("@_friendly_attribute_list", attribute_list)
  instance_variable_set("@_friendly_use_key", use)

  instance_eval do
    def _friendly_attribute_list
      @_friendly_attribute_list
    end

    _friendly_attribute_list.each do |attribute|
      define_singleton_method :"_friendly_#{attribute.to_s}_key" do
        instance_variable_set("@_friendly_#{attribute.to_s}_key", attribute)
      end
    end

    def _friendly_use_key
      @_friendly_use_key
    end

    def find_slugged(id)
      find(id.split("-").send(_friendly_use_key))
    end
  end

  class_eval do
    before_save :_update_slug

    def to_param
      if self.respond_to?(:slug)
        if self.slug.nil? || _unique_attribute_changed?
          _create_slug
        else
          self.slug
        end
      else
        _create_slug
      end
    end

    private 
    def _lookup_key(k)
      k.is_a?(Symbol)? self.send(k) : k.to_s 
    end

    def _update_slug
      if self.class._friendly_use_key == :database
        current_slug = self.to_param
        unless _slug_exists?(current_slug)
          self.slug = current_slug
        else
          self.slug = [current_slug.to_s, SecureRandom.hex(6)].join("-")
        end
      end
    end

    def _create_slug
      fresh_slug = self.class._friendly_attribute_list.map do |attribute|
        _lookup_key(self.class.send("_friendly_#{attribute.to_s}_key")).to_s
      end.
        join("-").
        gsub(/<\/?[^>]*>|[^\.\w\s-]/, '').
        strip.downcase.gsub(/\s{1,}|\./, '-').
        gsub(/-{2,}/, "-")

      fresh_slug[-1] == "-" ? fresh_slug[0...-1] : fresh_slug
    end

    def _unique_attribute_changed?
      self.send("#{self.class.send("_friendly_attribute_list").first.to_s}_changed?".to_sym)
    end

    def _slug_exists?(current_slug)
      self.class.where("slug = ? AND id != ?", current_slug, self.id.nil? ? "NULL" : self.id).any? 
    end
  end
end
find_slugged(id) click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 23
def find_slugged(id)
  find(id.split("-").send(_friendly_use_key))
end
to_param() click to toggle source
# File lib/friendly_slug/active_record/base.rb, line 31
def to_param
  if self.respond_to?(:slug)
    if self.slug.nil? || _unique_attribute_changed?
      _create_slug
    else
      self.slug
    end
  else
    _create_slug
  end
end