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# File 'lib/acts_as_rrranking.rb', line 8
def acts_as_rrranking(ranking_key, options = {})
@ranking_key = ranking_key
@redis_ranking_key = "#{self.name.underscore}_#{@ranking_key}"
@score_key = options[:score] || :score
@ranking_id = options[:id] || :id
class_eval " def update_\#{@ranking_key}\n self.class.redis.zadd('\#{@redis_ranking_key}', self.\#{@score_key}, self.\#{@ranking_id})\n end\n\n def current_\#{@ranking_key}\n if self.\#{@score_key} && self.\#{@score_key} > 0\n (self.class.redis.zrevrank('\#{@redis_ranking_key}', self.\#{@ranking_id}) || -1) + 1\n else\n nil\n end\n end\n\n after_save :update_\#{@ranking_key}\n STR\n\n instance_eval <<-STR\n def top_\#{@ranking_key.to_s.pluralize}(limit = 10, offset = 0)\n self.redis.zrange('\#{@redis_ranking_key}', offset, limit)\n end\n\n def top_\#{@ranking_key}_\#{self.name.underscore.pluralize}(limit = 10, offset = 0)\n ids = self.top_\#{@ranking_key.to_s.pluralize}(limit, offset)\n self.where(\#{@ranking_id}: ids)\n end\n\n def redis_ranking_key\n '\#{@redis_ranking_key}'\n end\n STR\nend\n"
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