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Ruby on rails 3 RubyonRails3：如何在MongoDBRuby驱动程序中使用MapReduce？_Ruby On Rails 3_Mongodb_Mapreduce - Fatal编程技术网
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Ruby on rails 3 RubyonRails3：如何在MongoDBRuby驱动程序中使用MapReduce？

ruby-on-rails-3 mongodb mapreduce

Ruby on rails 3 RubyonRails3：如何在MongoDBRuby驱动程序中使用MapReduce？,ruby-on-rails-3,mongodb,mapreduce,Ruby On Rails 3,Mongodb,Mapreduce,如果我使用的是Ruby on Rails，那么如何在Ruby on Rails中使用MapReduce？将您的map和reduce js函数定义为变量，然后按照以下内容： activities = Connection.new(host,port).db(dbname).collection('activities') activities.mapreduce(map,reduce,:out=>'analytics') “analytics”集合将保存mapreduce操作的结果

如果我使用的是Ruby on Rails，那么如何在Ruby on Rails中使用MapReduce？

将您的map和reduce js函数定义为变量，然后按照以下内容：

activities = Connection.new(host,port).db(dbname).collection('activities')
activities.mapreduce(map,reduce,:out=>'analytics')
“analytics”集合将保存mapreduce操作的结果