ruby - Sinatra with Kaminari: cannot load such file -- kaminari/sinatra -

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i want realize pagination in sinatra kaminari. gemfile looks this:

source "https://rubygems.org" gem "sinatra" gem "activerecord", :require => "active_record" gem "mysql2" gem "padrino-helpers" gem "kaminari", :require => "kaminari/sinatra"

my sinatra config.ru has bundler.require.

however, passenger displays following error: cannot load such file -- kaminari/sinatra

i don't know what's wrong. there not documentation kaminari sinatra, , bit found was: "you need padrino-helpers , require kaminari/sinatra". , that's did.

sinatra (~> 1.4.0) depends on rack (1.5.2), while kaminari (~> 0.13.0) depends on rack (~> 1.2.1). , since kaminari began experimental support sinatra since version 0.13.0, there appears impasse.


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