跳过和限制功能在Rails Rake文件中不起作用

Question

Hi am learner of rails and mongodb. i am doing application on rails with mongodb as backend. am having huge content of data to retrieve on single request at the time am having error is "cursor error", for that i used a trick is to partition of all data to small content. on that concept am having a bug, my code is to separate

     competitionsAry = NFL_Competition.where(sdi_sport_id: teamSdi_Sport_id)

 puts "Total competitions:" + competitionsAry.count.to_s // it has 2330 count on this step  

      execCount = competitionsAry.count / 100

      if competitionsAry.count % 100 != 0

          execCount += 1

      end      

      execCount.times do |ctr|

        skipValue = ctr + 100

        competitions = competitionsAry.skip(skipValue).limit(100)

 puts "Now the competition length is: " + competitions.length.to_s // here also same amount of 2330 data

i know "competitions = competitionsAry.skip(skipValue).limit(100)" here is the problem. skip and limits functions are not working. even i tried "competitions = NFL_Competition.skip(skipValue).limit(100)" no result what am exception can anyone help how to solve this and how to use skip and limit function on rails. thank you in advance.

Answer 1

是的，我明白了，我为此使用了ruby array slice的概念。

competitions = competitionsAry[skipValue,100]