ruby-on-rails - 如何使 Rails View .erb 文件打印 URL 的最后一部分？

Question

我是 Rails 的新手。我已经学会了如何制作静态 Controller Action 和相应的 View 文件。现在我想做到这一点，当我转到 localhost:3000/hi/anita 时，页面显示“Hi anita”，但是当我转到 localhost:3000/hi/bob 时，页面显示“Hi bob”。当然，我不想对 anita 和 bob 做出 Action 。你明白了。任何提示我该怎么做？谢谢!

Answer 1

我会定义路由以首先接受“最后一部分”，然后在操作中检索它:

# in routes.rb
# for rails 3:
match "/hi/:who" => "static#say_hi"
# for rails 2:
map.connect "/hi/:who", :controller => "static", :action => "say_hi"

# in StaticController
def say_hi
  @who = params[:who] || "No body" # as the user can use the url "/hi" without the "last part"
end

# in views/static/say_hi.html.erb
Hi <%= @who %>