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mongodbを使用するとkaminariでorderが使えない

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Last updated at Posted at 2014-04-19

問題

def index
  @tweets = Tweet.page(params[:page]).per(50).order("id desc")
end

みたいなことをやりたいが

undefined method `order' for #<Mongoid::Criteria:0x007fb98df18aa8>

と出力されてしまう.

解決法

def index
  @tweets = Tweet.page(params[:page]).per(50).desc(:id)
end

desc(:id)のように書く.

調査不足なので,mongodbを使った場合特有の現象なのかは調べきれていませんが,これでやりたいことができたので共有します!

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