路径

Question

看来每当get scope内有约束时，scope的约束都会被忽略：

此处识别路线：

scope '(/:optional_slug)', constraints: ->(req) { raise 'first constraint!' } do
  get '/:category/:slug(/:locale)' => 'public/posts#show', 
    constraints: ->(req) { true }
end

此处second constraints被提出：

scope '(/:optional_slug)', constraints: ->(req) { raise 'first constraint!' } do
  get '/:category/:slug(/:locale)' => 'public/posts#show', 
    constraints: ->(req) { raise 'second constraint!' }
end

仅当我从first constraint!

中删除约束时才会引发get

scope '(/:optional_slug)', constraints: ->(req) { raise 'first constraint!' } do
  get '/:category/:slug(/:locale)' => 'public/posts#show'
end

我无法在解释此类行为的文档中找到它。我错过了什么或者它是一个错误吗？