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Rails 網址加密

終於試成功了，歷經了5個小時的奮鬥，不過加密通常只用來用在安全網頁上，要不然對SEO我想是沒有幫助的。

首先先新增routes

  get 'post/:id', :to => 'posts#find_by_date'
  resources :posts

覆蓋掉原來會指向的action


再來要去index.html.erb把link_to改成手動指向action

原本這樣
<%= link_to post.title, post %>

改成這樣
<%= link_to post.title, controller: "posts", action: "find_by_date", id: post %>

再來...去先model 改post.rb
新增params加密由於是用id可以在後面加上字串當key

  def to_param
    Base64.urlsafe_encode64((self.id).to_s + "lzIGxpbmUgdHdvClRoaXMga")
  end

出來後id就會像 "OWx6SUd4cGJtVWdkSGR2Q2xSb2FYTWdhWE1nYkdsdQ=="
網址會變這樣http://localhost:3000/post/OWx6SUd4cGJtVWdkSGR2Q2xSb2FYTWdhWE1nYkdsdQ==

再來去controller新增#find_my_date
要記得
require 'base64'


  def find_by_date
    @post = Post.find((Base64.urlsafe_decode64(params[:id])).gsub("lzIGxpbmUgdHdvClRoaXMga",""))
  end

最後新增個find_by_date.html.erb
即可！！
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