Contents

class Tag < ActiveRecord::Base
 
  attr_accessible :name
 
  ### ASSOCIATIONS:
 
  has_many :taggings, :dependent => :destroy
 
  ### VALIDATIONS:
 
  validates_presence_of :name
  validates_uniqueness_of :name
 
  ### NAMED SCOPES:
 
  scope :named,          lambda { |name| { :conditions => ["name LIKE ?", name] } }
  scope :named_any,      lambda { |list| { :conditions => list.map { |tag| sanitize_sql(["name LIKE ?", tag.to_s]) }.join(" OR ") } }
  scope :named_like,     lambda { |name| { :conditions => ["name LIKE ?", "%#{name}%"] } }
  scope :named_like_any, lambda { |list| { :conditions => list.map { |tag| sanitize_sql(["name LIKE ?", "%#{tag.to_s}%"]) }.join(" OR ") } }
 
  ### CLASS METHODS:
 
  def self.find_or_create_with_like_by_name(name)
    named_like(name).first || create(:name => name)
  end
 
  def self.find_or_create_all_with_like_by_name(*list)
    list = [list].flatten
 
    return [] if list.empty?
 
    existing_tags = Tag.named_any(list).all
    new_tag_names = list.reject { |name| existing_tags.any? { |tag| tag.name.downcase == name.downcase } }
    created_tags  = new_tag_names.map { |name| Tag.create(:name => name) }
 
    existing_tags + created_tags
  end
 
  ### INSTANCE METHODS:
 
  def ==(object)
    super || (object.is_a?(Tag) && name == object.name)
  end
 
  def to_s
    name
  end
 
  def count
    read_attribute(:count).to_i
  end
 
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
content_engine-0.1.0	app/models/tag.rb