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mongoid

2024-07-08 17:11:58   220人阅读

 

http://mongoid.org/en/mongoid/docs/querying.html#queries

http://docs.mongodb.org/manual/reference/operator/query-comparison/

gt大于, gte大于等于,lt小于, lte小于等于,inc自增或自减

 

    def increase_or_decrease_position position      binding.pry      old_position = position.to_i      new_position = params[:package][:position].to_i      if old_position > new_position        @packages = Package.where(:type => params[:package][:type])          .where(:is_actived => true)          .where(:position.gte => new_position)          .where(:position.lt => old_position).inc(position: 1)      elsif new_position > old_position        @packages = Package.where(:type => params[:package][:type])          .where(:is_actived => true)          .where(:position.lte => new_position)          .where(:position.gt => old_position).inc(position: -1)       end     end

 


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