獲得通過的關鍵

Question

數組元素這是我app.rb：

require 'sinatra' 
COMICS = [ 
    { 
    'name' => 'Test #1', 
    'code' => 'Link №1' 
    }, 
    { 
    'name' => 'Test #2', 
    'code' => 'Test №2' 
    }, 
    { 
    'name' => 'Test #3', 
    'code' => 'Test №3' 
    }, 
    { 
    'name' => 'Test #4', 
    'code' => 'Test №4' 
    } 
    ] 
get '/' do 
    erb :index, :locals => { :comics => COMICS } 
end 

get '/single/:key' do 
    comic = COMICS[params['key']] 
    erb :single, :locals => { :comic => comic } 
end 

但是當我嘗試訪問：/single/0比如我收到以下錯誤：

TypeError at /single/1

no implicit conversion of String into Integer

Answer 1

嘗試

comic = COMICS[params['key'].to_i] 

param來自路徑，所以它是一個字符串。