76 lines
2.2 KiB
Ruby
76 lines
2.2 KiB
Ruby
class Page < ActiveRecord::Base
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validates_format_of :name, :with => /^[\w ]+$/
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validates_uniqueness_of :name
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has_many :comments, :order => 'created_at ASC', :dependent => :destroy
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has_and_belongs_to_many :tags, :order => 'tags.name ASC'
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belongs_to :author
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attr_protected :author_id
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has_and_belongs_to_many :pages, :join_table => 'wiki_words', :foreign_key => :source_id, :class_name => 'Page', :association_foreign_key => :destination_id
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has_and_belongs_to_many :pages_that_link_to_me, :join_table => 'wiki_words', :foreign_key => :destination_id, :association_foreign_key => :source_id, :class_name => 'Page'
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before_create :set_author_id
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before_save :sanitize_department
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after_save :update_wiki_words
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after_save :destroy_cache
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def self.exists?(name)
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!self.find_by_name(name).nil?
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end
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def tag_names
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self.tags.collect { |t| t.name }.join(' ')
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end
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def tag_names=(newtags)
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tag_name_ary = newtags.split if newtags.is_a?(String)
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tag_name_ary ||= newtags
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new_tags = []
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tag_name_ary.each do |tname|
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t = Tag.find_by_name tname
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t ||= Tag.create :name => tname
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new_tags << t
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end
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self.tags = new_tags
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end
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def self.popular_tags(limit = nil)
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query = "SELECT tags.id, tags.name, count(*) AS count FROM pages_tags, tags, pages WHERE tags.id = tag_id AND pages_tags.page_id = pages.id GROUP BY tags.id, tags.name ORDER BY count DESC"
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query << " LIMIT #{limit}" unless limit.nil?
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Tag.find_by_sql(query).sort { |a, b| a.name <=> b.name }
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end
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def cache_name
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"RedCloth_#{self.id}"
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end
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def self.wiki_word_pattern
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/\[\[([A-Za-z0-9 ]+)\]\]/
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end
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protected
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def sanitize_department
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self.department.to_s.gsub!(/[^\w']/, '_')
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self.department.to_s.gsub!(/__+/, '_')
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true
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end
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def set_author_id
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self.author_id ||= Application.current_author_id
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end
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def update_wiki_words
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self.pages.clear
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self.description.gsub(Page.wiki_word_pattern) do |match|
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p = Page.find_by_name($1) rescue nil
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WikiWord.create :source_id => self.id, :destination_id => p.id if p
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end
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end
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def destroy_cache
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Cache.delete(self.cache_name)
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self.pages_that_link_to_me.each { |p| Cache.delete(p.cache_name) }
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end
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end
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