Rubyonrails 如何控制或定制S为模型使用的命名路由Rail()

模型映射到路径的方式基本上是这样的:

send("#{FooStuff::Bar.model_name.route_key}_path")

您可以更改特定模型路由的解析方式，也可以更改其polymorhpic url映射，使用resolve:

# config/routes.rb

Rails.application.routes.draw do
  scope module: "foo_stuff", as: "foo" do
    resources :bars, path: "foo"
  end

  resolve "FooStuff::Bar" do |bar|
    if bar.persisted?
      [:foo_bar, id: bar.id]
    else
      [:foo_bars]
    end
  end
end

<%= link_to nil, FooStuff::Bar.first %>
#=> <a href="/foo/1">/foo/1</a>

<%= link_to nil, FooStuff::Bar.new %>
#=> <a href="/foo">/foo</a>

然而，resolve并不是万能的:

<%= link_to nil, [:edit, FooStuff::Bar.first] %>
#=> undefined method `edit_foo_stuff_bar_path'

你也可以用direct来"解决"这个问题，这更像是给正确的路由取了个别名:

# config/routes.rb

Rails.application.routes.draw do
  # ...

  direct :edit_foo_stuff_bar do |bar|
    [:edit, :foo_bar, id: bar.id]
  end
end

<%= link_to nil, [:edit, FooStuff::Bar.first] %>
#=> <a href="/foo/1/edit">/foo/1/edit</a>

最后，您可以更改路由密钥，任何副作用都会影响到您:

FooStuff::Bar.model_name.route_key = "foo_bars"
FooStuff::Bar.model_name.singular_route_key = "foo_bar"

<%= link_to nil, FooStuff::Bar.first %>          #=> <a href="/foo/1">/foo/1</a>
<%= link_to nil, FooStuff::Bar.new %>            #=> <a href="/foo">/foo</a>
<%= link_to nil, [:edit, FooStuff::Bar.first] %> #=> <a href="/foo/1/edit">/foo/1/edit</a>