43 lines
1.2 KiB
Ruby
43 lines
1.2 KiB
Ruby
class Album < ActiveRecord::Base
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validates_presence_of :name
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validates_uniqueness_of :name
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validates_format_of :name, :with => /^[\w ]+$/
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has_and_belongs_to_many :tags, :order => 'tags.name ASC'
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has_many :photos
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after_create :save_tags
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belongs_to :album_thumbnail, :class_name => 'Photo'
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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.for_select
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self.find(:all, :select => 'name', :order => 'name ASC').collect do |a|
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a.name
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end
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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 albums_tags, tags, albums WHERE tags.id = tag_id AND albums_tags.album_id = albums.id GROUP BY tags.id, tags.name ORDER BY tags.name ASC"
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query << " LIMIT #{limit}" unless limit.nil?
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Tag.find_by_sql(query)
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end
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protected
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def save_tags
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self.tags.each { |x| x.save }
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end
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end |